/* ==========================================================================
   Perplexity Interactive Demo - Stylesheet
   ========================================================================== */

/* Color Tokens
   ========================================================================== */
:root {
    --color-primary: #2C98A3;
    --color-gradient-start: #20808D;
    --color-gradient-end: #2C98A3;
    --color-accent: #667EEA;
    --color-secondary: #764BA2;
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #92400E;
    --color-background: #FFFFFF;
    --color-surface: #F9FAFB;
    --color-banner: #EEF2FF;
    --color-panel-header: #F3F4F6;
    --color-muted: #6B7280;
    --color-outline: #D1D5DB;
    --color-badge-info: #DBEAFE;
    --color-badge-info-text: #1E40AF;
    --color-beta-bg: #FEF3C7;
    --color-beta-text: #92400E;
    --color-text: #202222;
}

body.dark-mode {
    --color-primary: #2C98A3;
    --color-gradient-start: #20808D;
    --color-gradient-end: #2C98A3;
    --color-accent: #93C5FD;
    --color-secondary: #8B5CF6;
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #92400E;
    --color-background: #202222;
    --color-surface: #2B2D2E;
    --color-banner: #232427;
    --color-panel-header: #232427;
    --color-muted: #9CA3AF;
    --color-outline: #3A3D3E;
    --color-badge-info: #243649;
    --color-badge-info-text: #E5E5E5;
    --color-beta-bg: #232427;
    --color-beta-text: #E5E5E5;
    --color-text: #E5E5E5;
}

/* Base Styles
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Inter', sans-serif;
    background: var(--color-background);
    color: var(--color-text);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Mobile Notice Banner
   ========================================================================== */
.mobile-notice {
    display: none; /* Hidden by default */
    background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
    color: white;
    padding: 12px 16px;
    text-align: center;
    font-size: 13px;
    line-height: 1.4;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.mobile-notice strong {
    font-weight: 600;
}

/* Show only on small screens */
@media (max-width: 768px) {
    .mobile-notice {
        display: block;
    }

    /* Force vertical layout on mobile */
    .results-container {
        flex-direction: column !important;
    }

    .instant-panel,
    .ai-panel {
        width: 100% !important;
    }
}

/* Metrics Dashboard
   ========================================================================== */
.metrics-bar {
    background: linear-gradient(135deg, var(--color-gradient-start) 0%, var(--color-gradient-end) 100%);
    color: white;
    padding: 12px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    transition: all 0.3s ease;
}

.metrics-bar.hidden {
    display: none;
}

.metric-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.metric-label {
    font-size: 11px;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-value {
    font-size: 16px;
    font-weight: 700;
    margin-top: 2px;
}

.metric-trend {
    font-size: 10px;
    opacity: 0.8;
}

/* Header
   ========================================================================== */
.header {
    background: var(--color-background);
    border-bottom: 1px solid var(--color-outline);
    padding: 20px 24px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.search-container {
    max-width: 1200px;
    margin: 0 auto;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    font-size: 24px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-gradient-start) 0%, var(--color-gradient-end) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.beta-badge {
    background: var(--color-beta-bg);
    color: var(--color-beta-text);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    border: 1px solid var(--color-warning);
}

.user-controls {
    display: flex;
    gap: 12px;
    align-items: center;
}

.control-btn {
    padding: 9px 18px;
    background: var(--color-background);
    border: 1.5px solid var(--color-outline);
    border-radius: 10px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    color: var(--color-text);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.control-btn:hover {
    background: var(--color-surface);
    border-color: var(--color-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.control-btn:active {
    transform: translateY(0);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.control-btn.primary {
    background: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}

.control-btn.primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* Search Box
   ========================================================================== */
.search-box-wrapper {
    position: relative;
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--color-background);
    border: 2px solid var(--color-outline);
    border-radius: 12px;
    padding: 14px 20px;
    transition: all 0.3s ease;
}

.search-box:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(44, 152, 163, 0.1);
}

.search-icon {
    color: var(--color-muted);
    margin-right: 12px;
    font-size: 18px;
}

.search-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--color-text);
    font-size: 16px;
    outline: none;
}

.search-input::placeholder {
    color: var(--color-muted);
}

.mode-selector {
    display: flex;
    gap: 6px;
    margin-left: 16px;
    background: var(--color-panel-header);
    padding: 4px;
    border-radius: 8px;
}

.mode-btn {
    padding: 6px 14px;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--color-muted);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.mode-btn.active {
    background: var(--color-background);
    color: var(--color-primary);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Search Suggestions
   ========================================================================== */
.search-suggestions {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--color-background);
    border: 1px solid var(--color-outline);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    max-height: 400px;
    overflow-y: auto;
    z-index: 200;
    display: none;
}

.search-suggestions.visible {
    display: block;
}

.suggestion-item {
    padding: 12px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: background 0.2s;
    border-bottom: 1px solid var(--color-surface);
}

.suggestion-item:last-child {
    border-bottom: none;
}

.suggestion-item:hover {
    background: var(--color-surface);
}

.suggestion-icon {
    font-size: 18px;
}

.suggestion-text {
    flex: 1;
    font-size: 14px;
    color: var(--color-text);
}

.suggestion-category {
    font-size: 11px;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Search Hint
   ========================================================================== */
.search-hint {
    margin-top: 12px;
    font-size: 12px;
    color: var(--color-muted);
    text-align: center;
    opacity: 1;
    max-height: 40px;
    overflow: hidden;
    transition: all 0.4s ease;
}

.search-hint.hidden {
    opacity: 0;
    max-height: 0;
    margin-top: 0;
}

.search-hint kbd {
    background: var(--color-surface);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 11px;
    border: 1px solid var(--color-outline);
}

/* Strategy Banner (PM View Only)
   ========================================================================== */
.strategy-banner {
    background: linear-gradient(135deg, var(--color-banner) 0%, #E0E7FF 100%);
    border-left: 4px solid var(--color-primary);
    padding: 12px 20px;
    border-radius: 8px;
    margin: 16px 0;
    display: none;
    justify-content: space-between;
    align-items: center;
}

body.pm-view-active .strategy-banner {
    display: flex;
}

body.dark-mode .strategy-banner {
    background: linear-gradient(135deg, #1E3A52 0%, #2A4A5E 100%);
    border-left-color: var(--color-primary);
}

.strategy-text {
    font-size: 13px;
    color: #4C1D95;
    font-weight: 500;
}

body.dark-mode .strategy-text {
    color: #E0E7FF;
}

body.dark-mode .strategy-text strong {
    color: #FFFFFF;
}

.routing-indicator {
    display: flex;
    gap: 16px;
    font-size: 12px;
}

.route-status {
    display: flex;
    align-items: center;
    gap: 6px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-success);
    animation: pulse 2s ease-in-out infinite;
}

.status-dot-ai {
    background: var(--color-accent);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Main Container
   ========================================================================== */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
    padding-bottom: 100px;
    min-height: calc(100vh - 280px);
}

body:not(.pm-view-active) .main-container {
    min-height: calc(100vh - 180px);
    padding-bottom: 120px;
}

/* Empty State
   ========================================================================== */
.empty-state {
    text-align: center;
    padding: 80px 20px;
    max-width: 600px;
    margin: 0 auto;
}

.empty-state-icon {
    font-size: 64px;
    margin-bottom: 24px;
    opacity: 0.5;
}

.empty-state-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
}

.empty-state-text {
    font-size: 16px;
    color: var(--color-muted);
    margin-bottom: 32px;
}

.example-queries {
    display: grid;
    gap: 12px;
}

.example-query {
    background: var(--color-surface);
    border: 1px solid var(--color-outline);
    border-radius: 12px;
    padding: 16px 20px;
    text-align: left;
    cursor: pointer;
    transition: all 0.2s;
}

.example-query:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(44, 152, 163, 0.15);
}

.example-query-category {
    font-size: 11px;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.example-query-text {
    font-size: 15px;
    color: var(--color-text);
    font-weight: 500;
}

/* Results Container
   ========================================================================== */
.results-container {
    display: flex;
    gap: 36px;
}

/* Panels
   ========================================================================== */
.instant-panel,
.ai-panel {
    background: var(--color-background);
    border-radius: 12px;
    border: 2px solid var(--color-outline);
    overflow-y: auto;
    max-height: calc(100vh - 320px);
}

.instant-panel {
    width: 40%;
}

.ai-panel {
    width: 60%;
}

.panel-header {
    background: var(--color-surface);
    border-bottom: 2px solid var(--color-outline);
    padding: 12px 16px;
    position: sticky;
    top: 0;
    z-index: 10;
}

.panel-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
}

.panel-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 700;
    color: var(--color-text);
}

.panel-icon {
    font-size: 16px;
}

.performance-metrics {
    display: flex;
    gap: 16px;
    font-size: 11px;
}

.perf-item {
    color: var(--color-muted);
}

.perf-value {
    font-weight: 700;
    color: var(--color-success);
}

.panel-meta {
    font-size: 12px;
    color: var(--color-muted);
    display: none;
    justify-content: space-between;
}

/* Show panel-meta only in PM View */
body.pm-view-active .panel-meta {
    display: flex;
}

.coverage-badge {
    background: var(--color-badge-info);
    color: var(--color-badge-info-text);
    padding: 3px 8px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 11px;
}

.synthesis-quality {
    display: flex;
    gap: 8px;
}

.quality-badge {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
}

.quality-badge.confidence {
    background: #D1FAE5;
    color: #065F46;
}

.quality-badge.sources {
    background: var(--color-badge-info);
    color: var(--color-badge-info-text);
}

.panel-content {
    padding: 20px;
}

/* Skeleton Loaders
   ========================================================================== */
.skeleton-loader {
    animation: fadeIn 0.3s ease-in;
}

.skeleton-result {
    background: linear-gradient(90deg, var(--color-surface) 0%, var(--color-panel-header) 50%, var(--color-surface) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    height: 120px;
    border-radius: 8px;
    margin-bottom: 16px;
}

.skeleton-text {
    background: linear-gradient(90deg, var(--color-surface) 0%, var(--color-panel-header) 50%, var(--color-surface) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    height: 16px;
    border-radius: 4px;
    margin-bottom: 12px;
}

.skeleton-text.short {
    width: 60%;
}

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

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

/* Search Results
   ========================================================================== */
.search-result {
    margin-bottom: 24px;
    padding: 16px;
    border-bottom: 1px solid var(--color-surface);
    border-left: 3px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.25s ease;
    animation: slideIn 0.3s ease-out;
}

.search-result:hover {
    transform: translateX(4px);
    border-left-color: var(--color-primary);
    background: rgba(44, 152, 163, 0.03);
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
}

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

.result-rank {
    width: 24px;
    height: 24px;
    background: var(--color-panel-header);
    color: var(--color-muted);
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 12px;
    margin-right: 8px;
}

.result-domain {
    font-size: 13px;
    color: var(--color-muted);
    display: inline;
}

.result-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-badge-info-text);
    margin: 8px 0;
    line-height: 1.5;
}

body.dark-mode .result-title {
    color: var(--color-accent);
}

.result-snippet {
    font-size: 15px;
    color: var(--color-text);
    line-height: 1.8;
    opacity: 0.9;
}

.result-meta {
    display: flex;
    gap: 12px;
    margin-top: 10px;
    font-size: 12px;
    color: var(--color-muted);
    opacity: 0.8;
}

/* AI Content
   ========================================================================== */
.ai-content {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text);
    animation: fadeIn 0.5s ease-in;
}

.ai-content h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-primary);
    margin: 24px 0 12px 0;
}

.ai-content p {
    margin-bottom: 18px;
    line-height: 1.8;
}

.citation {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 2px 7px;
    background: rgba(44, 152, 163, 0.12);
    color: #1A94A6;
    border: 1px solid var(--color-primary);
    border-radius: 6px;
    font-size: 11px;
    font-weight: 700;
    margin: 0 3px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.citation:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(44, 152, 163, 0.3);
}

/* PM Note
   ========================================================================== */
.pm-note {
    position: fixed;
    bottom: 24px;
    left: 24px;
    background: var(--color-background);
    border: 2px solid var(--color-primary);
    border-radius: 12px;
    padding: 16px;
    max-width: 300px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    z-index: 50;
    transition: all 0.3s ease;
}

.pm-note.hidden {
    display: none;
}

.pm-note-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.pm-icon {
    width: 24px;
    height: 24px;
    background: var(--color-primary);
    color: white;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 12px;
}

.pm-note-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text);
}

.pm-note-text {
    font-size: 12px;
    color: var(--color-muted);
    line-height: 1.5;
}

/* Follow-up Input
   ========================================================================== */
.followup-container {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-background);
    border-top: 1px solid var(--color-outline);
    padding: 16px 24px;
    z-index: 40;
    display: none;
}

body:not(.pm-view-active) .followup-container {
    display: block;
}

.followup-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 12px;
}

.followup-input {
    flex: 1;
    background: var(--color-panel-header);
    border: 1px solid var(--color-outline);
    border-radius: 24px;
    padding: 12px 20px;
    font-size: 15px;
    color: var(--color-text);
    outline: none;
    transition: all 0.2s;
}

.followup-input:focus {
    border-color: var(--color-primary);
}

.followup-actions {
    display: flex;
    gap: 8px;
}

.followup-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: var(--color-panel-header);
    color: var(--color-muted);
    cursor: pointer;
    transition: all 0.2s;
}

.followup-btn:hover {
    background: var(--color-outline);
    color: var(--color-primary);
}

/* Responsive
   ========================================================================== */
/* Tablet & Mobile Responsive Design */
@media (max-width: 1200px) {
    .results-container {
        flex-direction: column;
    }

    .instant-panel,
    .ai-panel {
        width: 100%;
    }

    .pm-note {
        display: none;
    }
}

@media (max-width: 768px) {
    /* Metrics bar - stack vertically on mobile */
    .metrics-bar {
        flex-wrap: wrap;
        padding: 10px 8px;
        gap: 8px;
        overflow-x: auto;
    }

    .metric-item {
        flex: 1 1 calc(50% - 8px);
        min-width: 140px;
        padding: 8px;
    }

    .metric-label {
        font-size: 10px;
    }

    .metric-value {
        font-size: 16px;
    }

    .metric-trend {
        font-size: 9px;
    }

    /* Header adjustments */
    .header {
        padding: 10px 12px;
    }

    .header-content {
        flex-direction: column;
        gap: 10px;
        align-items: stretch;
    }

    .logo-section {
        justify-content: center;
        flex-wrap: wrap;
        gap: 8px;
    }

    .logo {
        font-size: 20px;
    }

    .beta-badge {
        font-size: 10px;
        padding: 3px 8px;
    }

    .user-controls {
        flex-wrap: wrap;
        justify-content: center;
        gap: 6px;
    }

    .control-btn {
        font-size: 11px;
        padding: 6px 10px;
        flex: 1 1 auto;
        min-width: 120px;
        text-align: center;
    }

    /* Stack layout toggle and presentation toggle full width */
    #layoutToggle,
    #pmViewToggle {
        flex: 1 1 100%;
        min-width: unset;
    }

    .search-container {
        padding: 8px;
        width: 100%;
    }

    .search-box {
        font-size: 14px;
        padding: 10px 12px;
        width: 100%;
        border-radius: 10px;
    }

    .search-box-wrapper {
        width: 100%;
    }

    /* Control bar - hidden on mobile, use header controls instead */
    .control-bar {
        display: none;
    }

    /* Results panels */
    .instant-panel,
    .ai-panel {
        padding: 12px;
    }

    .panel-header {
        font-size: 14px;
        padding: 10px 12px;
        position: relative; /* Remove sticky on mobile to prevent overlap */
        top: auto;
    }

    /* Result cards */
    .result-item {
        padding: 12px;
        margin-bottom: 12px;
    }

    .result-title {
        font-size: 15px;
    }

    .result-url {
        font-size: 12px;
    }

    .result-snippet {
        font-size: 13px;
    }

    /* AI synthesis section */
    .synthesis-section h3 {
        font-size: 16px;
    }

    .synthesis-text {
        font-size: 14px;
        line-height: 1.6;
    }

    /* Source cards */
    .source-card {
        padding: 12px;
    }

    .source-title {
        font-size: 13px;
    }

    .source-meta {
        font-size: 11px;
    }

    /* Example queries */
    .example-queries {
        padding: 12px;
    }

    .query-chip {
        font-size: 12px;
        padding: 6px 12px;
    }

    /* Strategy banner */
    .strategy-banner {
        padding: 16px;
        margin: 12px;
    }

    .strategy-title {
        font-size: 18px;
    }

    .strategy-text {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    /* Extra small mobile phones */
    .metrics-bar {
        padding: 8px 6px;
        gap: 6px;
    }

    .metric-item {
        flex: 1 1 100%;
        min-width: unset;
        padding: 6px;
    }

    .metric-label {
        font-size: 9px;
    }

    .metric-value {
        font-size: 14px;
    }

    .metric-trend {
        font-size: 8px;
    }

    .header {
        padding: 10px 12px;
    }

    .logo {
        font-size: 20px;
    }

    .search-container {
        padding: 6px;
        width: 100%;
    }

    .search-box {
        font-size: 13px;
        padding: 8px 10px;
        width: 100%;
        border-radius: 8px;
    }

    .search-box-wrapper {
        width: 100%;
    }

    .control-bar {
        padding: 8px 10px;
        gap: 5px;
    }

    .control-btn {
        font-size: 11px;
        padding: 6px 8px;
        flex: 1 1 auto;
    }

    #pmViewToggle {
        font-size: 11px;
        padding: 6px 10px;
    }

    .instant-panel,
    .ai-panel {
        padding: 10px;
    }

    .panel-header {
        font-size: 13px;
        padding: 8px 10px;
        position: relative;
        top: auto;
    }

    .result-title {
        font-size: 14px;
    }

    .synthesis-section h3 {
        font-size: 15px;
    }

    .query-chip {
        font-size: 11px;
        padding: 5px 10px;
    }
}