/* --- DESIGN SYSTEM & CSS VARIABLES --- */
:root {
    --color-pine-dark: #1b4332;
    --color-pine-medium: #2d6a4f;
    --color-pine-light: #40916c;
    --color-gold-warm: #ffb703;
    --color-gold-dark: #fb8500;
    --color-cream-bg: #fdfbf7;
    --color-birch-bg: #f4f1ea;
    --color-slate-text: #2b2d42;
    --color-muted-text: #6c757d;
    --color-white: #ffffff;
    --color-success: #2ec4b6;
    
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    --shadow-sm: 0 2px 8px rgba(27, 67, 50, 0.05);
    --shadow-md: 0 8px 24px rgba(27, 67, 50, 0.08);
    --shadow-lg: 0 16px 40px rgba(27, 67, 50, 0.12);
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- GENERAL RESET & BASE STYLES --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--color-slate-text);
    background-color: var(--color-cream-bg);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--color-pine-dark);
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 24px;
}

.hidden {
    display: none !important;
}

/* --- BUTTONS --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    border: none;
    gap: 8px;
}

.btn-primary {
    background-color: var(--color-pine-medium);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-pine-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}

.btn-secondary:hover {
    background-color: var(--color-white);
    color: var(--color-pine-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-sync {
    background-color: var(--color-gold-warm);
    color: var(--color-pine-dark);
    border: none;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-fast);
}

.btn-sync:hover {
    background-color: var(--color-gold-dark);
    transform: translateY(-1px);
}

.btn-sync.spinning i {
    animation: spin 1s infinite linear;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* --- NAVIGATION BAR --- */
.navbar {
    background-color: rgba(27, 67, 50, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--color-white);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo i {
    color: var(--color-gold-warm);
    font-size: 1.8rem;
}

.logo-title {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1.2;
}

.logo-subtitle {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    opacity: 0.85;
    color: var(--color-birch-bg);
}

.nav-links {
    display: flex;
    gap: 24px;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    opacity: 0.8;
    transition: var(--transition-fast);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
}

.nav-links a:hover, .nav-links a.active {
    opacity: 1;
    background-color: rgba(255, 255, 255, 0.1);
}

/* --- HERO SECTION --- */
.hero {
    position: relative;
    background-image: url('https://images.unsplash.com/photo-1504280390367-361c6d9f38f4?q=80&w=1600&auto=format&fit=crop'); /* Campfire forest pine background */
    background-size: cover;
    background-position: center;
    height: 500px;
    display: flex;
    align-items: center;
    color: var(--color-white);
    text-align: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(27, 67, 50, 0.75) 0%, rgba(27, 67, 50, 0.9) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px;
}

.hero-tag {
    font-family: var(--font-body);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-gold-warm);
    display: inline-block;
    margin-bottom: 16px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 16px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 32px;
    opacity: 0.9;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
}

/* --- QUICK STATS / INFO CARDS --- */
.quick-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 0;
    margin-bottom: 48px;
    position: relative;
    z-index: 10;
}

.stat-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    padding: 32px 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition-fast);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    font-size: 2.2rem;
    color: var(--color-pine-medium);
    margin-bottom: 16px;
}

.stat-card h3 {
    font-size: 1.3rem;
    margin-bottom: 8px;
}

.stat-card p {
    color: var(--color-muted-text);
    font-size: 0.95rem;
}

/* --- SECTION CONTENT GENERAL --- */
.section-content {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 48px;
    margin-bottom: 48px;
    border: 1px solid var(--color-birch-bg);
}

.section-header {
    margin-bottom: 32px;
    border-bottom: 1px solid var(--color-birch-bg);
    padding-bottom: 24px;
}

.section-header h2 {
    font-size: 2.2rem;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-header h2 i {
    color: var(--color-pine-medium);
}

.section-header p {
    color: var(--color-muted-text);
    font-size: 1.05rem;
}

/* --- TIMELINE / ITINERARY --- */
.date-filter-container {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.filter-label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-pine-dark);
}

.filter-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.filter-btn {
    background-color: var(--color-birch-bg);
    border: 1px solid transparent;
    color: var(--color-slate-text);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover {
    background-color: var(--color-pine-light);
    color: var(--color-white);
}

.filter-btn.active {
    background-color: var(--color-pine-medium);
    color: var(--color-white);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 20px 0;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 3px;
    background-color: var(--color-birch-bg);
    top: 0;
    bottom: 0;
    left: 20px;
    margin-left: -1.5px;
}

.timeline-item {
    padding: 10px 30px;
    position: relative;
    background-color: inherit;
    width: 100%;
    margin-bottom: 24px;
}

.timeline-marker {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    left: 20px;
    background-color: var(--color-cream-bg);
    border: 3px solid var(--color-pine-medium);
    border-radius: 50%;
    z-index: 1;
    margin-left: -9px;
    top: 24px;
    transition: var(--transition-fast);
}

.timeline-item:hover .timeline-marker {
    background-color: var(--color-gold-warm);
    transform: scale(1.2);
}

.timeline-content {
    padding: 24px;
    background-color: var(--color-cream-bg);
    position: relative;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-pine-medium);
    transition: var(--transition-fast);
}

.timeline-item:hover .timeline-content {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.timeline-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    flex-wrap: wrap;
    gap: 8px;
}

.timeline-date {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-pine-light);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.source-context-link {
    font-size: 0.8rem;
    color: var(--color-gold-warm);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: var(--transition-fast);
}

.source-context-link:hover {
    color: var(--color-pine-medium);
    text-decoration: underline;
}

.timeline-content h3 {
    font-size: 1.4rem;
    margin-bottom: 12px;
}

.timeline-time {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    color: var(--color-gold-dark);
    font-weight: 600;
    margin-bottom: 8px;
    margin-right: 16px;
}

.timeline-location {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    color: var(--color-muted-text);
    margin-bottom: 12px;
}

.timeline-desc {
    font-size: 0.95rem;
    color: var(--color-slate-text);
    border-top: 1px solid var(--color-birch-bg);
    padding-top: 12px;
}

.loading {
    text-align: center;
    padding: 40px;
    color: var(--color-muted-text);
    font-size: 1.1rem;
}

/* --- LOGISTICS SECTION --- */
.logistics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.logistics-card {
    background-color: var(--color-cream-bg);
    padding: 24px;
    border-radius: var(--radius-md);
    border-top: 4px solid var(--color-pine-medium);
    box-shadow: var(--shadow-sm);
}

.logistics-card h3 {
    font-size: 1.25rem;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logistics-card h3 i {
    color: var(--color-pine-medium);
}

.logistics-card ul {
    list-style: none;
}

.logistics-card li {
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.logistics-card p {
    font-size: 0.9rem;
}

.markdown-viewer {
    background-color: var(--color-birch-bg);
    border-radius: var(--radius-md);
    padding: 32px;
    margin-top: 24px;
}

.markdown-viewer h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.markdown-body {
    font-size: 0.95rem;
}

.markdown-body h1, .markdown-body h2 {
    font-size: 1.3rem;
    margin: 16px 0 8px 0;
    border-bottom: 1px solid rgba(27, 67, 50, 0.1);
    padding-bottom: 4px;
}

.markdown-body ul, .markdown-body ol {
    margin-left: 20px;
    margin-bottom: 12px;
}

.markdown-body li {
    margin-bottom: 6px;
}

/* --- CHAT DIGEST SECTION --- */
.chat-decisions {
    background-color: #e9f5ed;
    border-left: 4px solid var(--color-success);
    padding: 24px;
    border-radius: var(--radius-md);
    margin-bottom: 32px;
}

.chat-decisions h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.chat-decisions h3 i {
    color: var(--color-success);
}

.decision-list {
    margin-left: 20px;
}

.decision-list li {
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.chat-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.chat-actions {
    text-align: center;
    margin-top: 32px;
}

.chat-bubble {
    background-color: var(--color-cream-bg);
    padding: 16px 20px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    max-width: 85%;
    align-self: flex-start;
    border-left: 3px solid var(--color-pine-light);
}

.chat-sender {
    font-weight: 700;
    color: var(--color-pine-dark);
    font-size: 0.9rem;
    margin-bottom: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.chat-time {
    font-size: 0.75rem;
    color: var(--color-muted-text);
    font-weight: 400;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.chat-source-link {
    color: var(--color-gold-warm);
    font-size: 0.8rem;
    transition: var(--transition-fast);
}

.chat-source-link:hover {
    color: var(--color-pine-light);
}

.chat-text {
    font-size: 0.95rem;
}

/* --- NOTEBOOKLM SECTION --- */
.notebook-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--color-birch-bg);
    padding-bottom: 12px;
    flex-wrap: wrap;
}

.tab-btn {
    background-color: transparent;
    border: none;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1rem;
    padding: 10px 20px;
    cursor: pointer;
    color: var(--color-muted-text);
    position: relative;
    transition: var(--transition-fast);
}

.tab-btn:hover {
    color: var(--color-pine-medium);
}

.tab-btn.active {
    color: var(--color-pine-dark);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -13px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--color-pine-dark);
}

.notebook-content {
    background-color: #212529;
    border-radius: var(--radius-md);
    color: #f8f9fa;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.code-header {
    background-color: #343a40;
    padding: 12px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.9rem;
    border-bottom: 1px solid #495057;
}

.btn-copy {
    background-color: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #f8f9fa;
    padding: 4px 12px;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-fast);
}

.btn-copy:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.notebook-content pre {
    padding: 24px;
    overflow: auto;
    max-height: 500px;
    font-family: Consolas, Monaco, 'Andale Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* --- FOOTER --- */
footer {
    background-color: var(--color-pine-dark);
    color: var(--color-white);
    padding: 40px 24px;
    text-align: center;
    font-size: 0.9rem;
    border-top: 4px solid var(--color-gold-warm);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-meta {
    opacity: 0.6;
    font-size: 0.8rem;
}

/* --- TOAST --- */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background-color: var(--color-pine-dark);
    color: var(--color-white);
    padding: 16px 28px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1000;
    transition: var(--transition-smooth);
    border-left: 4px solid var(--color-gold-warm);
    transform: translateY(100px);
    opacity: 0;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast i {
    color: var(--color-gold-warm);
}

/* --- SYNC STATUS BAR --- */
.sync-status-bar {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-top: 0;
    margin-bottom: 24px;
    background-color: var(--color-birch-bg);
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    border: 1px solid rgba(27, 67, 50, 0.1);
    box-shadow: var(--shadow-sm);
    flex-wrap: wrap;
    align-items: center;
    position: relative;
    z-index: 11;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-slate-text);
}

.status-item i {
    color: var(--color-pine-medium);
    font-size: 1.1rem;
}

.status-item strong {
    transition: var(--transition-fast);
}

.status-item strong.stale {
    color: #e63946;
    background-color: #ffe3e3;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
}

.status-item strong.fresh {
    color: var(--color-pine-dark);
    background-color: #e9f5ed;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
}

/* --- RESPONSIVE BREAKPOINTS --- */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 16px;
    }
    
    .nav-links {
        width: 100%;
        justify-content: center;
        gap: 8px;
    }
    
    .nav-links a {
        font-size: 0.85rem;
        padding: 4px 8px;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .section-content {
        padding: 24px;
    }
    
    .timeline::after {
        left: 10px;
    }
    
    .timeline-item {
        padding: 10px 20px;
    }
    
    .timeline-marker {
        left: 10px;
    }
}

/* --- NOTEBOOKLM AI CARD --- */
.notebook-ai-card {
    max-width: 600px;
    margin: 40px auto;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(27, 67, 50, 0.1);
    border-radius: var(--radius-md);
    padding: 48px 32px;
    text-align: center;
    box-shadow: var(--shadow-md);
}

.notebook-ai-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: #e9f0fe;
    color: #1a73e8;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.notebook-large-icon {
    font-size: 4rem;
    color: var(--color-pine-medium);
    margin-bottom: 24px;
    display: block;
}

.notebook-ai-card h3 {
    font-size: 1.6rem;
    color: var(--color-pine-dark);
    margin-bottom: 12px;
}

.notebook-ai-card p {
    color: var(--color-slate-text);
    margin-bottom: 24px;
}

.notebook-suggestions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 0 auto 32px auto;
    text-align: left;
    max-width: 480px;
}

.suggestion-item {
    background-color: var(--color-birch-bg);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: var(--color-pine-dark);
    display: flex;
    align-items: center;
    gap: 10px;
    font-style: italic;
    border: 1px solid rgba(27, 67, 50, 0.05);
}

.suggestion-item i {
    color: var(--color-gold-warm);
    font-size: 1.1rem;
}

.btn-notebook {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1.1rem;
    padding: 14px 32px;
    border-radius: 30px;
    background-color: var(--color-pine-medium);
    box-shadow: 0 4px 12px rgba(27, 67, 50, 0.2);
    text-decoration: none;
    color: white;
    font-weight: 600;
    transition: var(--transition-fast);
}

.btn-notebook:hover {
    background-color: var(--color-pine-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(27, 67, 50, 0.3);
    color: white;
}

.btn-notebook.disabled {
    background-color: #cccccc;
    color: #666666;
    cursor: not-allowed;
    pointer-events: none;
    box-shadow: none;
}

.notebook-note {
    font-size: 0.8rem;
    color: var(--color-muted-text);
    margin-top: 24px;
    font-style: normal;
}

/* --- LOGISTICS CARD SOURCE LINKS --- */
.card-source-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-gold-warm);
    text-decoration: none;
    margin-top: 14px;
    transition: var(--transition-fast);
}

.card-source-link:hover {
    color: var(--color-pine-medium);
    text-decoration: underline;
}