/*
 * Signal AI Design System
 * Dark, modern UI for content intelligence platform
 */

/* ========================================
   COLOR SYSTEM
   ======================================== */

:root {
    /* Background Colors - Deep Navy/Dark Blue */
    --signal-bg-primary: #0a0e1f;
    --signal-bg-secondary: #0f1629;
    --signal-bg-tertiary: #141b2e;
    --signal-bg-surface: #1a2235;

    /* Accent & Brand Colors */
    --signal-cyan: #00d9ff;
    --signal-cyan-dim: rgba(0, 217, 255, 0.1);
    --signal-blue: #0ea5e9;

    /* Text Colors */
    --signal-text-primary: #ffffff;
    --signal-text-secondary: #cbd5e1;
    --signal-text-dim: #64748b;
    --signal-text-muted: #475569;

    /* Border Colors */
    --signal-border: rgba(148, 163, 184, 0.1);
    --signal-border-light: rgba(148, 163, 184, 0.05);

    /* Post Card Gradient Colors */
    --signal-purple: linear-gradient(135deg, #a855f7, #8b5cf6);
    --signal-green: linear-gradient(135deg, #10b981, #059669);
    --signal-orange: linear-gradient(135deg, #f97316, #ea580c);
    --signal-pink: linear-gradient(135deg, #ec4899, #db2777);
    --signal-teal: linear-gradient(135deg, #14b8a6, #0d9488);
    --signal-yellow: linear-gradient(135deg, #eab308, #ca8a04);

    /* Tag Colors */
    --signal-tag-cyan: #00ccff;
    --signal-tag-purple: #a855f7;
    --signal-tag-orange: #fb923c;
    --signal-tag-pink: #ec4899;
    --signal-tag-green: #10b981;

    /* Status Colors */
    --signal-success: #10b981;
    --signal-warning: #f59e0b;
    --signal-error: #ef4444;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', 'Inter', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background: var(--signal-bg-primary);
    color: var(--signal-text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--signal-text-primary);
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* ========================================
   SPLIT-SCREEN LAYOUT
   ======================================== */

.signal-split {
    display: grid;
    grid-template-columns: 400px 1fr;
    height: 100vh;
    background: var(--signal-bg-primary);
    overflow: hidden;
}

/* Chat Panel (Left) */
.signal-chat-panel {
    background: var(--signal-bg-primary);
    border-right: 1px solid var(--signal-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Content Panel (Right) */
.signal-content-panel {
    background: var(--signal-bg-secondary);
    overflow-y: auto;
    overflow-x: hidden;
}

/* ========================================
   CHAT COMPONENTS
   ======================================== */

/* Chat Header */
.signal-chat-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--signal-border);
}

.signal-brand {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.signal-logo {
    height: 26px;
    width: auto;
    opacity: 0.95;
    transition: opacity 0.2s ease;
}

.signal-logo:hover {
    opacity: 1;
}

.signal-brand-icon {
    width: 40px;
    height: 40px;
    background: transparent;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.signal-brand-icon:hover {
    transform: scale(1.05);
}

.signal-brand-name {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.04em;
    background: linear-gradient(135deg, var(--signal-cyan), #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.signal-chat-subtitle {
    font-size: 13px;
    color: var(--signal-text-dim);
    margin-left: 0;
    max-width: 600px;
    line-height: 1.5;
    letter-spacing: 0.01em;
}

/* Outlier Callout Box */
.signal-outlier-callout {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--signal-bg-tertiary);
    border: 1px solid var(--signal-border);
    border-radius: 10px;
    padding: 10px 16px;
    margin-top: 12px;
}

.signal-outlier-callout-content {
    display: flex;
    align-items: center;
    gap: 10px;
}

.signal-outlier-count {
    font-size: 22px;
    font-weight: 700;
    color: var(--signal-cyan);
    line-height: 1;
}

.signal-outlier-label {
    font-size: 13px;
    color: var(--signal-text-dim);
    line-height: 1.4;
    letter-spacing: 0.01em;
}

/* Chat Messages Area */
.signal-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Scrollbar Styling */
.signal-messages::-webkit-scrollbar {
    width: 6px;
}

.signal-messages::-webkit-scrollbar-track {
    background: transparent;
}

.signal-messages::-webkit-scrollbar-thumb {
    background: var(--signal-border);
    border-radius: 10px;
}

.signal-messages::-webkit-scrollbar-thumb:hover {
    background: rgba(148, 163, 184, 0.3);
}

/* Chat Message */
.signal-message {
    display: flex;
    gap: 12px;
    animation: messageSlide 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes messageSlide {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.signal-avatar {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--signal-cyan), var(--signal-blue));
    color: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 15px;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 217, 255, 0.2);
}

.signal-message-content {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.signal-message-bubble {
    background: var(--signal-bg-tertiary);
    padding: 10px 14px;
    border-radius: 12px;
    font-size: 13px;
    line-height: 1.5;
    color: var(--signal-text-secondary);
    border: 1px solid var(--signal-border-light);
    word-wrap: break-word;
    overflow-wrap: break-word;
    word-break: break-word;
    max-width: 85%;
}

.signal-message-time {
    font-size: 11px;
    color: var(--signal-text-dim);
    margin-top: 6px;
    padding-left: 4px;
}

/* User Messages (sent by user) */
.signal-message-user {
    flex-direction: row-reverse;
}

.signal-message-user .signal-avatar {
    background: var(--signal-bg-tertiary);
    color: var(--signal-text-secondary);
    box-shadow: none;
}

.signal-message-user .signal-message-time {
    text-align: right;
    padding-right: 4px;
    padding-left: 0;
}

/* ========================================
   INSIGHT CARDS
   ======================================== */

.signal-insight-card {
    background: var(--signal-bg-surface);
    border: 1px solid var(--signal-border);
    border-radius: 12px;
    padding: 18px;
    margin-top: 12px;
    transition: all 0.2s ease;
}

.signal-insight-card:hover {
    border-color: rgba(0, 217, 255, 0.3);
    box-shadow: 0 4px 20px rgba(0, 217, 255, 0.1);
}

.signal-insight-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.signal-insight-icon {
    font-size: 18px;
}

.signal-insight-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--signal-text-dim);
}

.signal-insight-metric {
    background: var(--signal-cyan);
    color: #000;
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
    margin-left: auto;
    white-space: nowrap;
}

.signal-insight-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--signal-text-primary);
    margin-bottom: 8px;
    line-height: 1.4;
}

.signal-insight-desc {
    font-size: 13px;
    color: var(--signal-text-dim);
    line-height: 1.6;
    margin-bottom: 14px;
}

.signal-insight-link {
    color: var(--signal-cyan);
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap 0.2s ease;
}

.signal-insight-link:hover {
    gap: 8px;
}

/* Actionable takeaway on pattern cards */
.signal-insight-action {
    font-size: 12px;
    line-height: 1.5;
    color: var(--signal-success);
    background: rgba(16, 185, 129, 0.08);
    padding: 8px 12px;
    border-radius: 6px;
    border-left: 3px solid var(--signal-success);
    margin-top: 8px;
}

/* Recommendation cards (legacy — kept for backward compat) */
.signal-rec-card {
    border-color: rgba(16, 185, 129, 0.2);
}

.signal-rec-item {
    margin-bottom: 14px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--signal-border-light);
}

.signal-rec-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.signal-rec-actions {
    list-style: none;
    padding: 0;
    margin: 8px 0 0;
}

.signal-rec-actions li {
    font-size: 12px;
    color: var(--signal-text-secondary);
    padding: 4px 0 4px 18px;
    position: relative;
    line-height: 1.5;
}

.signal-rec-actions li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--signal-success);
    opacity: 0.6;
}

/* ========================================
   CONSOLIDATED REPORT CARD
   ======================================== */

.signal-report-card {
    background: var(--signal-bg-surface);
    border: 1px solid var(--signal-border);
    border-radius: 12px;
    margin-top: 12px;
    overflow: hidden;
}

.signal-report-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 18px;
    cursor: pointer;
    transition: background 0.2s ease;
    border-bottom: 1px solid transparent;
}

.signal-report-header:hover {
    background: rgba(0, 217, 255, 0.04);
}

.signal-report-header-left {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--signal-text-primary);
    letter-spacing: 0.3px;
    min-width: 0;
    overflow: hidden;
}

.signal-report-header-left > span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.signal-report-header-left > svg {
    flex-shrink: 0;
}

.signal-report-meta {
    margin-left: auto;
    font-size: 11px;
    color: var(--signal-text-dim);
    font-weight: 500;
    white-space: nowrap;
    flex-shrink: 0;
}

.signal-report-chevron {
    transition: transform 0.2s ease;
    color: var(--signal-text-dim);
    flex-shrink: 0;
}

.signal-report-header.collapsed .signal-report-chevron {
    transform: rotate(-90deg);
}

.signal-report-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.signal-report-body.open {
    max-height: 2000px;
    border-top: 1px solid var(--signal-border);
}

.signal-report-section {
    padding: 16px 18px;
    border-bottom: 1px solid var(--signal-border-light);
}

.signal-report-section:last-child {
    border-bottom: none;
}

.signal-report-section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--signal-cyan);
    margin-bottom: 10px;
}

.signal-report-section-body {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.signal-report-line {
    font-size: 13px;
    color: var(--signal-text-secondary);
    line-height: 1.6;
    padding-left: 4px;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.signal-report-line strong {
    color: var(--signal-text-primary);
    font-weight: 600;
}

/* Trend Radar items */
.signal-trend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 4px;
    font-size: 13px;
    color: var(--signal-text-secondary);
    border-radius: 6px;
    transition: background 0.15s ease;
}
.signal-trend-item:hover {
    background: rgba(255, 255, 255, 0.03);
}
.signal-trend-rank {
    font-size: 11px;
    font-weight: 700;
    color: var(--signal-cyan);
    min-width: 20px;
}
.signal-trend-icon {
    color: var(--signal-text-dim);
    display: flex;
    align-items: center;
    min-width: 14px;
}
.signal-trend-name {
    flex: 1;
    color: var(--signal-text-primary);
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.signal-trend-velocity {
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
    white-space: nowrap;
}
.signal-trend-rising {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}
.signal-trend-peaking {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
}
.signal-trend-declining {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}
.signal-trend-emerging {
    background: rgba(0, 217, 255, 0.1);
    color: var(--signal-cyan);
}
.signal-trend-hint {
    font-size: 11px;
    color: var(--signal-text-dim);
    margin-top: 6px;
    padding-left: 4px;
    font-style: italic;
}

/* Cluster filter pills (below report) */
.signal-report-clusters {
    margin-top: 12px;
    padding: 12px 0 0;
}

.signal-report-clusters-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--signal-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 8px;
}

.signal-report-cluster-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.signal-cluster-pill {
    font-size: 11px !important;
    padding: 4px 10px !important;
}

.signal-cluster-pill .signal-cluster-count {
    opacity: 0.6;
    font-size: 10px;
    margin-left: 4px;
}

.signal-cluster-pill.signal-cluster-active {
    background: var(--signal-cyan) !important;
    color: #000 !important;
}

/* ========================================
   CHAT INPUT
   ======================================== */

.signal-chat-input-area {
    padding: 20px 24px;
    border-top: 1px solid var(--signal-border);
    background: var(--signal-bg-primary);
    flex-shrink: 0;
}

.signal-chat-input {
    width: 100%;
    background: var(--signal-bg-tertiary);
    border: 1px solid var(--signal-border);
    border-radius: 10px;
    padding: 13px 16px;
    color: var(--signal-text-primary);
    font-size: 14px;
    line-height: 1.5;
    transition: all 0.2s ease;
    font-family: inherit;
    box-sizing: border-box;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.signal-chat-input:focus {
    outline: none;
    border-color: var(--signal-cyan);
    box-shadow: 0 0 0 3px var(--signal-cyan-dim);
}

.signal-chat-input::placeholder {
    color: var(--signal-text-muted);
    opacity: 1;
}

/* Onboarding CTA */
.signal-onboarding-cta {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 85%;
}

.signal-setup-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    color: var(--signal-bg-primary);
    background: var(--signal-cyan);
    border: none;
    border-radius: 10px;
    cursor: pointer;
    text-decoration: none;
    transition: opacity 0.2s;
}

.signal-setup-btn:hover {
    opacity: 0.9;
}

.signal-onboarding-hint {
    font-size: 11px;
    color: var(--signal-text-dim);
    padding-left: 2px;
}

.signal-chat-footer {
    padding: 0 24px 16px;
    flex-shrink: 0;
    display: flex;
    gap: 8px;
}

.signal-create-category-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    flex: 1;
    padding: 11px 16px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.02em;
    font-family: inherit;
    color: var(--signal-cyan);
    background: rgba(0, 217, 255, 0.06);
    border: 1px solid rgba(0, 217, 255, 0.18);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.signal-create-category-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.08) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.signal-create-category-btn:hover {
    background: rgba(0, 217, 255, 0.1);
    border-color: rgba(0, 217, 255, 0.35);
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.08);
    transform: translateY(-1px);
}

.signal-create-category-btn:hover::before {
    opacity: 1;
}

.signal-create-category-btn:active {
    transform: translateY(0);
    box-shadow: none;
}

/* ========================================
   CONTENT HEADER
   ======================================== */

.signal-content-header {
    padding: 32px 40px;
    position: sticky;
    top: 0;
    background: var(--signal-bg-secondary);
    z-index: 10;
    border-bottom: 1px solid var(--signal-border);
}

.signal-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.signal-content-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--signal-text-primary);
    letter-spacing: -0.03em;
}

/* Apify usage badge */
.apify-usage-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background: var(--signal-bg-surface);
    border: 1px solid var(--signal-border);
    border-radius: 6px;
    font-size: 12px;
    color: var(--signal-text-secondary);
    transition: all 0.2s ease;
}

.apify-usage-badge:hover {
    background: var(--signal-bg-tertiary);
    border-color: var(--signal-cyan);
}

.apify-usage-badge span {
    font-weight: 500;
    color: var(--signal-cyan);
}

/* Settings gear button */
.signal-settings-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: none;
    background: transparent;
    color: var(--signal-text-dim);
    text-decoration: none;
    cursor: pointer;
    transition: color 0.2s, background 0.2s;
}

.signal-settings-btn:hover {
    color: var(--signal-text-primary);
    background: var(--signal-bg-tertiary);
}

/* ========================================
   FILTER PILLS
   ======================================== */

.signal-filters {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    row-gap: 16px;
}

.signal-sort-row {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--signal-border);
}

.signal-filter-group {
    display: flex;
    align-items: center;
    gap: 12px;
    align-self: flex-start; /* Ensure all filter groups align to the top */
}

.signal-filter-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.2px;
    color: var(--signal-text-muted);
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.signal-filter-manage {
    color: var(--signal-text-muted);
    opacity: 0.6;
    transition: all 0.2s ease;
}

.signal-filter-manage:hover {
    color: var(--signal-cyan);
    opacity: 1;
}

.signal-filter-pills {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    max-width: 600px;
}

.signal-pill {
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--signal-border);
    background: transparent;
    color: var(--signal-text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.signal-pill:hover:not(.active) {
    border-color: var(--signal-cyan);
    color: var(--signal-cyan);
}

.signal-pill.active {
    background: var(--signal-cyan);
    color: #000;
    border-color: var(--signal-cyan);
    font-weight: 600;
}

.signal-pill.signal-pill-disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

/* Brand pill with remove mode on long-press */
.signal-pill.brand-pill {
    position: relative;
    user-select: none;
}

.signal-pill.brand-pill.removing {
    background: var(--signal-error);
    border-color: var(--signal-error);
    color: #fff;
    animation: pulse-remove 0.3s ease;
}

@keyframes pulse-remove {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Chat reset button */
.signal-chat-reset {
    padding: 8px 12px;
    background: transparent;
    border: 1px solid var(--signal-border);
    border-radius: 8px;
    color: var(--signal-text-muted);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.signal-chat-reset:hover {
    background: var(--signal-bg-tertiary);
    border-color: var(--signal-cyan);
    color: var(--signal-cyan);
}

/* ========================================
   POST GRID
   ======================================== */

.signal-grid {
    padding: 32px 40px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

/* Post Card Link Wrapper */
.signal-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s ease;
}

.signal-card-link:hover {
    transform: translateY(-2px);
}

/* Post Card */
.signal-card {
    background: var(--signal-bg-surface);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--signal-border-light);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    animation: cardFadeIn 0.5s ease-out backwards;
}

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.signal-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4),
                0 0 0 1px rgba(0, 217, 255, 0.1);
}

/* Card Media */
.signal-card-media {
    position: relative;
    width: 100%;
    aspect-ratio: 4/5;
    overflow: hidden;
    background: var(--signal-bg-tertiary);
}

.signal-card-media img,
.signal-card-media video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Gradient Fallbacks for Posts without Media */
.signal-gradient-purple,
.signal-gradient-green,
.signal-gradient-orange,
.signal-gradient-pink,
.signal-gradient-teal {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

.signal-gradient-purple { background: var(--signal-purple); }
.signal-gradient-green { background: var(--signal-green); }
.signal-gradient-orange { background: var(--signal-orange); }
.signal-gradient-pink { background: var(--signal-pink); }
.signal-gradient-teal { background: var(--signal-teal); }

/* Fallback gradient with post info overlay */
.signal-fallback-gradient {
    display: flex;
    align-items: center;
    justify-content: center;
}

.signal-fallback-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px;
    text-align: center;
}

.signal-fallback-handle {
    font-size: 16px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.signal-fallback-type {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: rgba(255, 255, 255, 0.7);
    background: rgba(0, 0, 0, 0.3);
    padding: 4px 12px;
    border-radius: 4px;
}

.signal-fallback-stat {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 600;
}

/* Platform Badge (Top-Left Overlay) */
.signal-platform-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border-radius: 20px;
    background: rgba(10, 14, 31, 0.85);
    backdrop-filter: blur(12px);
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    z-index: 2;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.signal-platform-badge svg {
    width: 14px;
    height: 14px;
}

/* Date Badge (Below Platform Badge) */
.signal-date-badge {
    position: absolute;
    top: 54px;
    left: 14px;
    padding: 5px 12px;
    border-radius: 12px;
    background: rgba(10, 14, 31, 0.75);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 11px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
    z-index: 2;
}

/* Tag Pills (Top-Right Overlay) */
.signal-tags {
    position: absolute;
    top: 14px;
    right: 14px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    z-index: 2;
}

.signal-tag {
    padding: 5px 12px;
    border-radius: 5px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.signal-tag-0 { background: var(--signal-tag-cyan); color: #000; }
.signal-tag-1 { background: var(--signal-tag-purple); color: #fff; }
.signal-tag-2 { background: var(--signal-tag-orange); color: #000; }
.signal-tag-3 { background: var(--signal-tag-pink); color: #fff; }
.signal-tag-4 { background: var(--signal-tag-green); color: #000; }

/* Score Ring (Bottom-Right Overlay) */
.signal-score-ring {
    position: absolute;
    bottom: 14px;
    right: 14px;
    width: 64px;
    height: 64px;
    z-index: 2;
}

.signal-score-svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.signal-score-bg {
    fill: none;
    stroke: rgba(10, 14, 31, 0.7);
    stroke-width: 4;
}

.signal-score-fg {
    fill: none;
    stroke-width: 4;
    stroke-linecap: round;
    transition: stroke-dashoffset 1s ease-out;
}

.signal-score-fg.cyan { stroke: var(--signal-cyan); }
.signal-score-fg.green { stroke: var(--signal-success); }
.signal-score-fg.yellow { stroke: var(--signal-warning); }
.signal-score-fg.dim { stroke: var(--signal-text-muted); }

.signal-score-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
}

/* Card Body */
.signal-card-body {
    padding: 18px;
}

/* Per-post insight (why it worked) */
.signal-card-insight {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 10px 12px;
    margin-bottom: 12px;
    background: var(--signal-cyan-dim);
    border-radius: 8px;
    border-left: 3px solid var(--signal-cyan);
    font-size: 12px;
    line-height: 1.5;
    color: var(--signal-text-secondary);
}

.signal-card-insight svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.signal-card-caption {
    font-size: 14px;
    line-height: 1.5;
    color: var(--signal-text-secondary);
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.signal-card-stats {
    display: flex;
    gap: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--signal-border-light);
}

.signal-stat {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--signal-text-dim);
}

.signal-stat svg {
    width: 16px;
    height: 16px;
    opacity: 0.7;
}

/* ========================================
   EMPTY STATE
   ======================================== */

.signal-empty {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 40px;
    text-align: center;
    min-height: 40vh;
}

.signal-empty svg {
    margin-bottom: 24px;
    opacity: 0.3;
}

.signal-empty h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--signal-text-primary);
}

.signal-empty p {
    color: var(--signal-text-dim);
    font-size: 15px;
    max-width: 400px;
    margin-bottom: 24px;
}

.signal-empty-cta {
    display: inline-block;
    padding: 12px 24px;
    background: var(--signal-cyan);
    color: #000;
    font-weight: 600;
    font-size: 14px;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(6, 182, 212, 0.15);
    border: none;
    cursor: pointer;
}

.signal-empty-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.25);
    background: #07b9d5;
}

.signal-empty-steps {
    display: flex;
    flex-direction: column;
    gap: 10px;
    text-align: left;
    max-width: 360px;
    width: 100%;
}

.signal-empty-step {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: var(--signal-text-secondary);
    padding: 10px 14px;
    background: var(--signal-bg-surface);
    border: 1px solid var(--signal-border);
    border-radius: 8px;
}

.signal-empty-step code {
    background: var(--signal-bg-elevated);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 12px;
    color: var(--signal-cyan);
}

.signal-empty-step-num {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--signal-cyan);
    color: #000;
    font-size: 12px;
    font-weight: 700;
    border-radius: 50%;
    flex-shrink: 0;
}

/* Create category modal */
.signal-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}
.signal-modal-overlay.open {
    opacity: 1;
    visibility: visible;
}
.signal-modal {
    background: var(--signal-bg-secondary) !important;
    border: 1px solid var(--signal-border);
    border-radius: 16px;
    width: 90%;
    max-width: 480px;
    max-height: 90vh;
    overflow: auto;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
}
.signal-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--signal-border-light);
}
.signal-modal-title {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--signal-text-primary);
}
.signal-modal-close {
    background: none;
    border: none;
    color: var(--signal-text-secondary);
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    padding: 0 4px;
}
.signal-modal-close:hover {
    color: var(--signal-text-primary);
}
.signal-modal-form {
    padding: 24px;
}
.signal-form-group {
    margin-bottom: 20px;
}
.signal-form-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--signal-text-secondary);
    margin-bottom: 8px;
}
.signal-form-optional {
    font-weight: 400;
    text-transform: none;
    color: var(--signal-text-dim);
}
.signal-form-input,
.signal-form-textarea {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    color: var(--signal-text-primary);
    background: var(--signal-bg-secondary);
    border: 1px solid var(--signal-border-light);
    border-radius: 8px;
    box-sizing: border-box;
}
.signal-form-textarea {
    resize: vertical;
    min-height: 100px;
}
.signal-modal-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--signal-border-light);
}
.signal-btn-outline {
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--signal-text-secondary);
    background: transparent;
    border: 1px solid var(--signal-border);
    border-radius: 8px;
    cursor: pointer;
}
.signal-btn-outline:hover {
    color: var(--signal-text-primary);
    border-color: var(--signal-text-dim);
}
.signal-btn-primary {
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    color: #000;
    background: var(--signal-cyan);
    border: none;
    border-radius: 8px;
    cursor: pointer;
}
.signal-btn-primary:hover {
    opacity: 0.9;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 1024px) {
    .signal-split {
        grid-template-columns: 1fr;
        grid-template-rows: 50vh 1fr;
    }

    .signal-chat-panel {
        border-right: none;
        border-bottom: 1px solid var(--signal-border);
    }

    .signal-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 20px;
        padding: 24px;
    }
}

@media (max-width: 768px) {
    .signal-grid {
        grid-template-columns: 1fr;
    }

    .signal-filters {
        flex-direction: column;
        gap: 16px;
    }
}

/* Competitive Set Dropdown */
.signal-vertical-dropdown-container {
    position: relative;
    display: inline-block;
}

.signal-vertical-dropdown-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    min-width: 180px;
    justify-content: space-between;
}

.signal-vertical-current {
    flex: 1;
    text-align: left;
}

.signal-dropdown-arrow {
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.signal-vertical-dropdown-menu.open + .signal-vertical-dropdown-btn .signal-dropdown-arrow,
.signal-vertical-dropdown-btn:hover .signal-dropdown-arrow {
    transform: rotate(180deg);
}

.signal-vertical-dropdown-menu {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    min-width: 200px;
    background: var(--signal-bg-secondary);
    border: 1px solid var(--signal-border);
    border-radius: 8px;
    padding: 4px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.signal-vertical-dropdown-menu.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.signal-vertical-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
    gap: 12px;
}

.signal-vertical-option:hover {
    background: var(--signal-bg-tertiary);
}

.signal-vertical-option.active {
    background: rgba(0, 191, 255, 0.1);
}

.signal-vertical-name {
    flex: 1;
    color: var(--signal-text);
    font-size: 13px;
    font-weight: 500;
}

.signal-vertical-option:hover .signal-vertical-name {
    color: var(--signal-cyan);
}

.signal-vertical-delete {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px;
    background: transparent;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    opacity: 0;
    transition: all 0.15s ease;
    color: var(--signal-text-secondary);
}

.signal-vertical-option:hover .signal-vertical-delete {
    opacity: 1;
}

.signal-vertical-delete:hover {
    background: rgba(255, 71, 87, 0.15);
    color: #ff4757;
}

/* ── Brand Pill Delete Button ── */
.brand-pill {
    display: flex;
    align-items: center;
    gap: 6px;
    position: relative;
}

.brand-pill-name {
    flex: 1;
}

.brand-pill-delete {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2px;
    background: transparent;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    opacity: 0.3;  /* Slightly visible by default so users discover it */
    transition: all 0.2s ease;
    color: var(--signal-text-secondary);
}

.brand-pill:hover .brand-pill-delete {
    opacity: 1;
    transform: scale(1.1);  /* Subtle grow effect on pill hover */
}

.brand-pill-delete:hover {
    background: rgba(255, 71, 87, 0.2);  /* Stronger red background */
    color: #ff4757;
    transform: scale(1.15);  /* Grow more on direct hover */
}

/* ── Drag and Drop States ── */
.brand-pill.dragging {
    opacity: 0.4;
    cursor: grabbing;
    transform: scale(0.95);
}

.brand-pill[draggable="true"] {
    cursor: grab;
}

.trash-zone {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 120px;
    height: 120px;
    background: var(--signal-bg-tertiary);
    border: 2px dashed var(--signal-border-light);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    z-index: 9999;
    color: var(--signal-text-secondary);
}

.trash-zone.visible {
    opacity: 1;
    pointer-events: all;
}

.trash-zone.drag-over {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--signal-error);
    border-style: solid;
    transform: scale(1.1);
}

.trash-zone svg {
    color: var(--signal-text-secondary);
    transition: all 0.2s ease;
}

.trash-zone.drag-over svg {
    color: var(--signal-error);
    transform: scale(1.2);
}

.trash-zone span {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ── Timeframe Context Subtitle ── */
.signal-timeframe-context {
    font-size: 11px;
    color: var(--signal-text-secondary);
    opacity: 0.7;
    font-weight: 400;
}

/* ── Expandable Insight Section ── */
.signal-expand-trigger {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 0 0;
    margin-top: 12px;
    border-top: 1px solid var(--signal-border-light);
    cursor: pointer;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--signal-cyan);
    transition: color 0.15s ease;
    user-select: none;
}

.signal-expand-trigger:hover {
    color: #4ecdc4;
}

.signal-expand-trigger svg {
    transition: transform 0.2s ease;
    flex-shrink: 0;
}

.signal-expand-trigger.open svg {
    transform: rotate(180deg);
}

/* ── No AI Analysis Badge ── */
.signal-no-analysis-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 0 0;
    margin-top: 12px;
    border-top: 1px solid var(--signal-border-light);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.03em;
    color: var(--signal-text-muted);
    opacity: 0.6;
}

.signal-no-analysis-badge svg {
    flex-shrink: 0;
    opacity: 0.5;
}

.signal-no-analysis-badge:hover {
    opacity: 0.8;
    cursor: help;
}

.signal-expand-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.25s ease,
                padding 0.25s ease;
    opacity: 0;
    padding: 0;
}

.signal-expand-panel.open {
    max-height: 2000px;
    opacity: 1;
    padding: 14px 0 4px;
}

.signal-insight-summary {
    font-size: 13px;
    font-weight: 600;
    color: var(--signal-text);
    line-height: 1.5;
    margin-bottom: 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--signal-border-light);
}

.signal-insight-section {
    margin-bottom: 12px;
}

.signal-insight-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--signal-text-secondary);
    margin-bottom: 4px;
}

.signal-insight-text {
    font-size: 12px;
    line-height: 1.6;
    color: var(--signal-text);
    opacity: 0.9;
}

.signal-insight-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    color: var(--signal-cyan);
    background: rgba(0, 206, 209, 0.08);
    padding: 3px 10px;
    border-radius: 12px;
    border: 1px solid rgba(0, 206, 209, 0.15);
}

.signal-insight-quote {
    font-size: 12px;
    line-height: 1.6;
    color: var(--signal-cyan);
    font-style: italic;
    padding-left: 10px;
    border-left: 2px solid rgba(0, 206, 209, 0.3);
}

.signal-insight-caption {
    font-size: 12px;
    line-height: 1.6;
    color: var(--signal-text);
    opacity: 0.85;
    background: rgba(255, 255, 255, 0.03);
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid var(--signal-border-light);
    white-space: pre-wrap;
}

/* Creative Brief Divider + Header */
.signal-brief-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--signal-cyan), transparent);
    opacity: 0.3;
    margin: 16px 0;
}

.signal-brief-header {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 700;
    color: var(--signal-cyan);
    margin-bottom: 14px;
    letter-spacing: 0.02em;
}

.signal-brief-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 12px;
    padding-top: 10px;
    border-top: 1px solid var(--signal-border-light);
}

.signal-brief-tag {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--signal-text);
    background: rgba(255, 255, 255, 0.06);
    padding: 3px 8px;
    border-radius: 6px;
}

.signal-brief-score {
    font-size: 11px;
    font-weight: 600;
    color: var(--signal-cyan);
}

/* ── Content Pattern Cluster Cards ── */
.signal-cluster-card {
    border-color: rgba(167, 139, 250, 0.25);
}

.signal-cluster-card:hover {
    border-color: rgba(167, 139, 250, 0.5);
    box-shadow: 0 4px 20px rgba(167, 139, 250, 0.12);
}

.signal-cluster-card.signal-cluster-active {
    border-color: rgba(167, 139, 250, 0.7);
    background: rgba(167, 139, 250, 0.06);
}

.signal-cluster-filter-hint {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--signal-tag-purple);
    opacity: 0.6;
    margin-top: 8px;
    transition: opacity 0.15s ease;
}

.signal-cluster-card:hover .signal-cluster-filter-hint {
    opacity: 1;
}

/* ── Brand Baselines (Benchmarking) ── */
.signal-benchmark-trigger {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 14px;
    background: var(--signal-bg-surface);
    border: 1px solid var(--signal-border);
    border-radius: 12px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    color: var(--signal-text-primary);
    transition: all 0.15s ease;
    user-select: none;
}

.signal-benchmark-trigger:hover {
    border-color: rgba(0, 217, 255, 0.3);
}

.signal-benchmark-count {
    font-size: 11px;
    font-weight: 600;
    color: var(--signal-text-dim);
    margin-left: auto;
}

.signal-benchmark-chevron {
    transition: transform 0.2s ease;
    color: var(--signal-text-dim);
    flex-shrink: 0;
}

.signal-benchmark-trigger.open .signal-benchmark-chevron {
    transform: rotate(180deg);
}

.signal-benchmark-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.2s ease,
                margin 0.2s ease;
    opacity: 0;
    margin-top: 0;
}

.signal-benchmark-panel.open {
    max-height: 600px;
    opacity: 1;
    margin-top: 10px;
}

.signal-benchmark-header-row {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 0.6fr;
    gap: 6px;
    padding: 6px 10px;
    margin-bottom: 2px;
}

.signal-benchmark-col-label {
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--signal-text-dim);
    opacity: 0.7;
}

.signal-benchmark-row {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 0.6fr;
    gap: 6px;
    padding: 8px 10px;
    border-radius: 8px;
    transition: background 0.1s ease;
}

.signal-benchmark-row:hover {
    background: rgba(255, 255, 255, 0.03);
}

.signal-benchmark-handle {
    font-size: 12px;
    font-weight: 600;
    color: var(--signal-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: flex;
    align-items: center;
    gap: 6px;
}

.signal-benchmark-outlier-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    font-size: 10px;
    font-weight: 700;
    color: #000;
    background: var(--signal-cyan);
    border-radius: 9px;
    flex-shrink: 0;
}

.signal-benchmark-error-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    font-size: 10px;
    font-weight: 700;
    color: #fff;
    background: var(--signal-error, #e74c3c);
    border-radius: 9px;
    flex-shrink: 0;
    cursor: help;
}

.signal-benchmark-warn-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    font-size: 10px;
    font-weight: 700;
    color: #000;
    background: var(--signal-warning, #f0ad4e);
    border-radius: 9px;
    flex-shrink: 0;
    cursor: help;
}

.signal-benchmark-val {
    font-size: 12px;
    color: var(--signal-text-dim);
    font-variant-numeric: tabular-nums;
    display: flex;
    align-items: center;
}

.signal-benchmark-posts {
    color: var(--signal-text-secondary);
    opacity: 0.7;
}

.signal-benchmark-footnote {
    font-size: 10px;
    color: var(--signal-text-dim);
    opacity: 0.5;
    padding: 8px 10px 2px;
    border-top: 1px solid var(--signal-border-light);
    margin-top: 4px;
}

/* New Category link in dropdown */
.signal-new-category-link {
    border-top: 1px solid var(--signal-border-light);
    margin-top: 4px;
    padding-top: 8px !important;
    text-decoration: none;
}

.signal-new-category-link:hover {
    background: rgba(0, 212, 255, 0.08);
}

/* Empty State */
.signal-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 32px;
    text-align: center;
    color: var(--signal-text-secondary);
    background: var(--signal-bg-secondary);
    border-radius: 16px;
    margin: 32px 24px;
}

.signal-empty-state svg {
    margin-bottom: 24px;
    opacity: 0.6;
}

.signal-empty-state h3 {
    margin: 0 0 12px 0;
    font-size: 20px;
    font-weight: 600;
    color: var(--signal-text);
}

.signal-empty-state p {
    margin: 0;
    font-size: 14px;
    max-width: 400px;
    line-height: 1.6;
}

/* ── Custom Modals ── */
.custom-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.custom-modal-content {
    background: #1a1d23;  /* Solid dark background */
    border: 1px solid var(--signal-border);
    border-radius: 12px;
    padding: 24px;
    max-width: 400px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: slideUp 0.2s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.custom-modal-content h3 {
    margin: 0 0 12px 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--signal-text);
}

.custom-modal-content p {
    margin: 0 0 20px 0;
    font-size: 14px;
    line-height: 1.5;
    color: var(--signal-text-secondary);
}

.custom-modal-input {
    width: 100%;
    padding: 10px 12px;
    margin-bottom: 20px;
    background: var(--signal-bg-tertiary);
    border: 1px solid var(--signal-border);
    border-radius: 6px;
    color: var(--signal-text-primary);
    font-size: 14px;
    font-family: inherit;
    box-sizing: border-box;
}

.custom-modal-input:focus {
    outline: none;
    border-color: var(--signal-accent);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.custom-modal-buttons {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

.custom-modal-btn {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
}

.custom-modal-btn-cancel {
    background: transparent;
    color: var(--signal-text-secondary);
    border: 1px solid var(--signal-border);
}

.custom-modal-btn-cancel:hover {
    background: var(--signal-bg-tertiary);
    color: var(--signal-text-primary);
}

.custom-modal-btn-confirm {
    background: var(--signal-accent);
    color: white;
}

.custom-modal-btn-confirm:hover {
    background: #5558d9;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

/* Analysis Loading Modal Styles */
.analysis-loading-content {
    min-width: 400px;
    max-width: 500px;
    background: var(--signal-bg-secondary) !important;
    border: 1px solid var(--signal-border);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* Make X button visible and interactive on analysis loading modal */
.analysis-loading-content .signal-modal-close {
    background: rgba(20, 27, 46, 0.9) !important;
    border: 1.5px solid var(--signal-cyan) !important;
    border-radius: 8px !important;
    width: 36px !important;
    height: 36px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    color: var(--signal-cyan) !important;
    font-size: 28px !important;
    font-weight: 600 !important;
    line-height: 1 !important;
    padding: 0 !important;
    transition: all 0.2s ease !important;
}

.analysis-loading-content .signal-modal-close:hover {
    background: var(--signal-error) !important;
    border-color: var(--signal-error) !important;
    color: #fff !important;
    transform: scale(1.1);
}

.analysis-loading-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.analysis-loading-header h3 {
    margin: 0;
    font-size: 20px;
    color: var(--signal-text);
}

.analysis-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--signal-border);
    border-top-color: var(--signal-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.analysis-progress-bar {
    width: 100%;
    height: 8px;
    background: var(--signal-border);
    border-radius: 4px;
    overflow: hidden;
    margin: 16px 0;
}

.analysis-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--signal-accent), #5558d9);
    border-radius: 4px;
    width: 0%;
    transition: width 0.5s ease;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.analysis-time-info {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin: 12px 0;
}

.analysis-time-detail,
.analysis-time-estimate {
    font-size: 13px;
    color: var(--signal-text-secondary);
    margin: 0;
}

.analysis-time-detail {
    font-weight: 500;
}

.analysis-loading-tip {
    font-size: 12px;
    color: var(--signal-text-secondary);
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--signal-border);
}

/* ========================================
   SPLASH SCREEN
   ======================================== */

.splash-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(135deg, #0a0e1f 0%, #141b2e 50%, #0f1629 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 1;
    transition: opacity 0.6s ease-out;
}

.splash-screen.fade-out {
    opacity: 0;
    pointer-events: none;
}

.splash-content {
    text-align: center;
    transform: scale(0.9);
    animation: splashEntry 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes splashEntry {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.splash-logo {
    margin-bottom: 30px;
}

.splash-logo img {
    display: block;
    margin: 0 auto;
}

.splash-title {
    font-size: 48px;
    font-weight: 700;
    letter-spacing: -0.04em;
    background: linear-gradient(135deg, var(--signal-cyan), #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    animation: titleSlide 0.8s ease-out 0.3s both;
}

@keyframes titleSlide {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.splash-tagline {
    font-size: 16px;
    color: var(--signal-text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
    animation: taglineSlide 0.8s ease-out 0.5s both;
}

@keyframes taglineSlide {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.splash-loader {
    width: 200px;
    height: 4px;
    background: rgba(100, 116, 139, 0.2);
    border-radius: 2px;
    margin: 0 auto;
    overflow: hidden;
    animation: loaderFade 0.8s ease-out 0.7s both;
}

@keyframes loaderFade {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.splash-loader-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--signal-cyan), #a855f7);
    border-radius: 2px;
    animation: loaderProgress 1.5s ease-out forwards;
}

@keyframes loaderProgress {
    0% {
        width: 0%;
    }
    100% {
        width: 100%;
    }
}

/* ========================================
   SKELETON LOADING STATES
   ======================================== */

.skeleton-card {
    pointer-events: none;
}

.skeleton-card .signal-card {
    background: var(--signal-bg-surface);
    border-radius: 12px;
    overflow: hidden;
    animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.skeleton-media {
    width: 100%;
    height: 220px;
    background: linear-gradient(
        135deg,
        var(--signal-bg-tertiary) 0%,
        var(--signal-bg-surface) 50%,
        var(--signal-bg-tertiary) 100%
    );
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.8s ease-in-out infinite;
}

.skeleton-line {
    height: 12px;
    background: var(--signal-bg-tertiary);
    border-radius: 4px;
    margin-bottom: 8px;
    animation: skeleton-shimmer 1.8s ease-in-out infinite;
}

@keyframes skeleton-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

@keyframes skeleton-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ========================================
   MULTIPLIER BADGE (Post Card Overlay)
   ======================================== */

.signal-multiplier-badge {
    position: absolute;
    top: 54px;
    left: 14px;
    padding: 4px 10px;
    border-radius: 10px;
    background: rgba(10, 14, 31, 0.8);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 11px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.6);
    z-index: 2;
}

.signal-multiplier-hot {
    color: var(--signal-cyan);
    font-weight: 700;
    font-size: 12px;
}

.signal-multiplier-high {
    color: var(--signal-success);
    font-weight: 700;
    font-size: 12px;
}

.signal-multiplier-med {
    color: var(--signal-warning);
    font-weight: 600;
    font-size: 12px;
}

/* When both multiplier and date badges are shown, stack them */
.signal-multiplier-badge + .signal-date-badge {
    top: 86px;
}

/* ========================================
   FILTER RESET BUTTON
   ======================================== */

.signal-pill-reset {
    border-color: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.5);
    gap: 4px;
}

.signal-pill-reset:hover {
    border-color: var(--signal-cyan);
    color: var(--signal-cyan);
}

/* ========================================
   QUICK GUIDE MODAL
   ======================================== */

.signal-guide-section {
    padding: 14px 0;
    border-bottom: 1px solid var(--signal-border);
}

.signal-guide-section:last-child {
    border-bottom: none;
}

.signal-guide-heading {
    font-size: 13px;
    font-weight: 700;
    color: var(--signal-cyan);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.signal-guide-desc {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
    margin: 0 0 8px;
    line-height: 1.5;
}

.signal-guide-examples {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.signal-guide-examples code {
    display: block;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 11px;
    padding: 6px 10px;
    border-radius: 6px;
    background: var(--signal-bg-tertiary);
    color: rgba(255, 255, 255, 0.7);
    border: 1px solid var(--signal-border);
    cursor: pointer;
    transition: all 0.15s ease;
}

.signal-guide-examples code:hover {
    background: var(--signal-bg-surface);
    color: var(--signal-cyan);
    border-color: var(--signal-cyan);
}

/* ── Onboarding Template Cards ── */
.signal-onboarding-templates {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 4px;
    max-width: 85%;
}

.signal-template-card {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    background: var(--signal-bg-surface);
    border: 1px solid var(--signal-border);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
    font-size: 0.9em;
}

.signal-template-card:hover {
    border-color: var(--signal-cyan);
    background: rgba(0, 200, 255, 0.05);
    transform: translateX(2px);
}

.signal-template-card.signal-template-custom {
    border-style: dashed;
    opacity: 0.8;
}

.signal-template-card.signal-template-custom:hover {
    opacity: 1;
}

.signal-template-info {
    flex: 1;
    min-width: 0;
}

.signal-template-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--signal-text-primary);
}

.signal-template-brands {
    font-size: 10px;
    color: var(--signal-text-dim);
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ── Budget Indicator Bar ── */
.signal-budget-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    background: var(--signal-bg-surface);
    border: 1px solid var(--signal-border);
    border-radius: 8px;
    margin-bottom: 10px;
    font-size: 11px;
    color: var(--signal-text-dim);
}

.signal-budget-info {
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    flex-shrink: 0;
}

.signal-budget-track {
    flex: 1;
    height: 4px;
    background: var(--signal-bg-elevated);
    border-radius: 2px;
    overflow: hidden;
    min-width: 60px;
}

.signal-budget-fill {
    height: 100%;
    background: var(--signal-success);
    border-radius: 2px;
    transition: width 0.5s ease;
}

.signal-budget-fill.budget-warning {
    background: var(--signal-warning);
}

.signal-budget-fill.budget-danger {
    background: var(--signal-error);
}

.signal-budget-runs {
    white-space: nowrap;
    color: var(--signal-text-muted);
    font-size: 10px;
}

/* ── First-Run Hints ── */
.signal-first-run-hints {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 12px;
    background: rgba(0, 200, 255, 0.04);
    border: 1px solid rgba(0, 200, 255, 0.15);
    border-radius: 10px;
    margin-bottom: 12px;
    align-items: center;
}

.signal-hint-card {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    color: var(--signal-text-secondary);
    padding: 6px 10px;
    background: var(--signal-bg-surface);
    border-radius: 6px;
    border: 1px solid var(--signal-border);
}

.signal-hint-card strong {
    color: var(--signal-cyan);
}

.signal-hint-dismiss {
    margin-left: auto;
    padding: 4px 12px;
    font-size: 11px;
    font-weight: 600;
    color: var(--signal-text-dim);
    background: var(--signal-bg-elevated);
    border: 1px solid var(--signal-border);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.signal-hint-dismiss:hover {
    color: var(--signal-text-primary);
    border-color: var(--signal-cyan);
}

/* ========================================
   CONTENT SCORER
   ======================================== */

.signal-score-btn {
    color: #a855f7 !important;
    background: rgba(168, 85, 247, 0.06) !important;
    border-color: rgba(168, 85, 247, 0.18) !important;
}

.signal-score-btn::before {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.08) 0%, transparent 60%) !important;
}

.signal-score-btn:hover {
    background: rgba(168, 85, 247, 0.1) !important;
    border-color: rgba(168, 85, 247, 0.35) !important;
    box-shadow: 0 0 20px rgba(168, 85, 247, 0.08) !important;
}

.signal-scorer-row {
    display: flex;
    gap: 12px;
}

.signal-scorer-result-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--signal-border);
}

.signal-scorer-score-ring {
    width: 72px;
    height: 72px;
    position: relative;
    flex-shrink: 0;
}

.signal-scorer-score-ring .signal-score-svg {
    width: 72px;
    height: 72px;
}

.signal-scorer-score-ring .signal-score-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 20px;
    font-weight: 700;
    color: var(--signal-text-primary);
}

.signal-scorer-score-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--signal-text-primary);
}

.signal-scorer-predicted {
    font-size: 12px;
    color: var(--signal-text-dim);
    margin-top: 2px;
}

.signal-optimize-btn {
    margin-left: auto;
    padding: 8px 16px !important;
    font-size: 13px !important;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.signal-scorer-bar-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.signal-scorer-bar-label {
    font-size: 12px;
    color: var(--signal-text-secondary);
    width: 110px;
    flex-shrink: 0;
}

.signal-scorer-bar-track {
    flex: 1;
    height: 6px;
    background: var(--signal-bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.signal-scorer-bar-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.6s ease;
}

.signal-scorer-bar-value {
    font-size: 12px;
    font-weight: 600;
    color: var(--signal-text-dim);
    width: 36px;
    text-align: right;
    flex-shrink: 0;
}

.signal-scorer-suggestions {
    margin-top: 16px;
}

.signal-scorer-suggestion {
    font-size: 12px;
    color: var(--signal-text-secondary);
    padding: 6px 10px;
    background: var(--signal-bg-tertiary);
    border-radius: 6px;
    margin-bottom: 6px;
    border-left: 2px solid var(--signal-cyan);
}

.signal-scorer-divider {
    height: 1px;
    background: var(--signal-border);
    margin: 20px 0;
}

.signal-scorer-optimized-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--signal-success);
    margin-bottom: 12px;
}

.signal-scorer-improved-caption {
    font-size: 13px;
    color: var(--signal-text-primary);
    background: var(--signal-bg-tertiary);
    padding: 12px;
    border-radius: 8px;
    line-height: 1.6;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.signal-scorer-improved-hook {
    font-size: 12px;
    color: var(--signal-text-dim);
    font-style: italic;
    margin-top: 8px;
}

.signal-scorer-improvement {
    font-size: 12px;
    color: var(--signal-text-secondary);
    padding: 4px 0;
}

.signal-scorer-improvement strong {
    color: var(--signal-cyan);
}

.signal-scorer-score-compare {
    display: inline-block;
    margin-top: 12px;
    font-size: 14px;
    color: var(--signal-text-secondary);
}

.signal-scorer-score-compare strong {
    color: var(--signal-success);
    font-size: 16px;
}

.signal-scorer-loading {
    text-align: center;
    padding: 40px 20px;
}

.signal-scorer-loading p {
    margin-top: 12px;
    color: var(--signal-text-dim);
    font-size: 13px;
}

/* ── Quick Guide Styles ── */
.signal-guide-section {
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--signal-border);
}

.signal-guide-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.signal-guide-heading {
    font-size: 14px;
    font-weight: 700;
    color: var(--signal-cyan);
    margin-bottom: 4px;
}

.signal-guide-desc {
    font-size: 12px;
    color: var(--signal-text-dim);
    margin-bottom: 8px;
}

.signal-guide-examples {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.signal-guide-examples code {
    display: block;
    font-size: 12px;
    color: var(--signal-text-secondary);
    background: var(--signal-bg-tertiary);
    padding: 6px 10px;
    border-radius: 6px;
    border: 1px solid var(--signal-border-light);
    cursor: pointer;
    transition: border-color 0.15s ease;
}

.signal-guide-examples code:hover {
    border-color: var(--signal-cyan);
}


/* ========================================
   USER MENU (Google Login)
   ======================================== */

.signal-user-menu {
    position: relative;
    margin-left: 4px;
}

.signal-user-avatar-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: 2px solid var(--signal-border);
    border-radius: 50%;
    background: var(--signal-bg-surface);
    cursor: pointer;
    overflow: hidden;
    transition: border-color 0.2s;
}

.signal-user-avatar-btn:hover {
    border-color: var(--signal-cyan);
}

.signal-user-avatar {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.signal-user-avatar-fallback {
    font-size: 13px;
    font-weight: 700;
    color: var(--signal-cyan);
}

.signal-user-dropdown {
    position: absolute;
    top: 40px;
    right: 0;
    min-width: 200px;
    background: var(--signal-bg-tertiary);
    border: 1px solid var(--signal-border);
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    z-index: 1000;
    padding: 14px 16px;
}

.signal-user-dropdown-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--signal-text-primary);
    margin-bottom: 2px;
}

.signal-user-dropdown-email {
    font-size: 11px;
    color: var(--signal-text-dim);
    word-break: break-all;
}

.signal-user-dropdown-divider {
    border: none;
    border-top: 1px solid var(--signal-border);
    margin: 10px 0;
}

.signal-user-dropdown-item {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--signal-text-secondary);
    text-decoration: none;
    padding: 6px 0;
    transition: color 0.15s;
}

.signal-user-dropdown-item:hover {
    color: var(--signal-cyan);
}