/* ============================================
   Six Degrees of Tuberculosis
   Victorian Sanatorium Aesthetic
   ============================================ */

:root {
    /* Aged paper and sanatorium palette */
    --bg-deep: #1a1612;
    --bg-dark: #2a2420;
    --bg-medium: #3d352e;
    --paper: #e8e0d0;
    --paper-dark: #d4c9b5;
    --paper-aged: #c9bba3;
    --ink: #2c1810;
    --ink-faded: #5c4a3a;
    --blood: #8b2d2d;
    --blood-dark: #5c1e1e;
    --gold: #b8943d;
    --gold-dim: #8a7030;
    
    /* Typography */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-typewriter: 'Special Elite', 'Courier New', monospace;
    --font-body: 'Crimson Text', Georgia, serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
}

/* ============================================
   Reset & Base
   ============================================ */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 18px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-deep);
    color: var(--paper);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ============================================
   Atmospheric Effects
   ============================================ */

.atmosphere {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

.dust-particles {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(1px 1px at 20px 30px, rgba(255,255,255,0.1), transparent),
        radial-gradient(1px 1px at 40px 70px, rgba(255,255,255,0.05), transparent),
        radial-gradient(1px 1px at 50px 160px, rgba(255,255,255,0.08), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(255,255,255,0.06), transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(255,255,255,0.04), transparent);
    background-size: 200px 200px;
    animation: dust-float 60s linear infinite;
    opacity: 0.6;
}

@keyframes dust-float {
    0% { transform: translateY(0); }
    100% { transform: translateY(-200px); }
}

.vignette {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, transparent 0%, transparent 50%, rgba(0,0,0,0.5) 100%);
}

/* ============================================
   Container & Layout
   ============================================ */

.container {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-md);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ============================================
   Header
   ============================================ */

.header {
    text-align: center;
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--bg-medium);
    margin-bottom: var(--space-lg);
}

.header-ornament {
    font-size: 1.5rem;
    color: var(--gold-dim);
    margin: var(--space-sm) 0;
    opacity: 0.7;
}

.title {
    margin: var(--space-md) 0;
}

.title-six {
    display: block;
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 400;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--paper-dark);
}

.title-of {
    display: block;
    font-family: var(--font-display);
    font-style: italic;
    font-size: 1rem;
    color: var(--gold-dim);
    margin: var(--space-xs) 0;
}

.title-tb {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 700;
    color: var(--paper);
    letter-spacing: 0.02em;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.subtitle {
    font-family: var(--font-body);
    font-size: 1.1rem;
    color: var(--paper-dark);
    font-style: italic;
    max-width: 500px;
    margin: 0 auto;
}

.subtitle em {
    color: var(--blood);
    font-style: italic;
}

/* ============================================
   Search Section
   ============================================ */

.search-section {
    flex: 1;
}

.search-container {
    margin-bottom: var(--space-lg);
}

.search-box {
    background: var(--paper);
    border-radius: 4px;
    padding: var(--space-sm);
    box-shadow: 
        0 4px 20px rgba(0,0,0,0.3),
        inset 0 1px 0 rgba(255,255,255,0.5);
    position: relative;
}

.search-box::before {
    content: '';
    position: absolute;
    inset: 4px;
    border: 1px solid var(--paper-aged);
    border-radius: 2px;
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-typewriter);
    font-size: 1.1rem;
    background: transparent;
    border: none;
    color: var(--ink);
    outline: none;
}

.search-input::placeholder {
    color: var(--ink-faded);
    font-style: italic;
}

.search-btn {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    margin-top: var(--space-sm);
    font-family: var(--font-display);
    font-size: 1rem;
    background: var(--blood-dark);
    color: var(--paper);
    border: none;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.search-btn:hover:not(:disabled) {
    background: var(--blood);
}

.search-btn:disabled {
    cursor: wait;
    opacity: 0.8;
}

.search-btn .btn-loading {
    display: none;
}

.search-btn.loading .btn-text {
    display: none;
}

.search-btn.loading .btn-loading {
    display: inline;
    animation: pulse 1.5s ease-in-out infinite;
}

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

.search-examples {
    margin-top: var(--space-md);
    text-align: center;
    font-size: 0.9rem;
    color: var(--paper-dark);
}

.search-examples span {
    margin-right: var(--space-xs);
}

.example-btn {
    background: none;
    border: 1px solid var(--bg-medium);
    color: var(--paper-dark);
    padding: 0.3rem 0.8rem;
    margin: 0.2rem;
    font-family: var(--font-typewriter);
    font-size: 0.8rem;
    cursor: pointer;
    border-radius: 2px;
    transition: all 0.2s ease;
}

.example-btn:hover {
    border-color: var(--gold-dim);
    color: var(--gold);
}

/* ============================================
   Results Section
   ============================================ */

.results-container {
    background: var(--paper);
    border-radius: 4px;
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    color: var(--ink);
    box-shadow: 0 4px 30px rgba(0,0,0,0.4);
    position: relative;
    animation: results-appear 0.5s ease-out;
}

.results-container::before {
    content: '';
    position: absolute;
    inset: 8px;
    border: 1px solid var(--paper-aged);
    pointer-events: none;
}

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

.results-container.hidden {
    display: none;
}

.results-header {
    text-align: center;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--paper-aged);
}

.results-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.results-query {
    font-style: italic;
    color: var(--ink-faded);
    margin-top: var(--space-xs);
}

.results-query span {
    color: var(--blood-dark);
    font-weight: 600;
}

/* ============================================
   Connection Path
   ============================================ */

.connection-path {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.path-node {
    display: flex;
    gap: var(--space-md);
    animation: node-appear 0.4s ease-out backwards;
}

.path-node:nth-child(1) { animation-delay: 0.1s; }
.path-node:nth-child(2) { animation-delay: 0.2s; }
.path-node:nth-child(3) { animation-delay: 0.3s; }
.path-node:nth-child(4) { animation-delay: 0.4s; }
.path-node:nth-child(5) { animation-delay: 0.5s; }
.path-node:nth-child(6) { animation-delay: 0.6s; }

@keyframes node-appear {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.node-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: var(--blood-dark);
    color: var(--paper);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
}

.node-content {
    flex: 1;
    padding-bottom: var(--space-md);
    border-bottom: 1px dashed var(--paper-aged);
}

.path-node:last-child .node-content {
    border-bottom: none;
}

.node-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: var(--space-xs);
}

.node-description {
    color: var(--ink-faded);
    font-size: 0.95rem;
    line-height: 1.6;
}

.node-final {
    background: linear-gradient(135deg, var(--blood-dark), var(--blood));
    color: var(--paper);
    padding: var(--space-md);
    border-radius: 4px;
    text-align: center;
    margin-top: var(--space-sm);
}

.node-final .node-number {
    background: var(--paper);
    color: var(--blood-dark);
    margin: 0 auto var(--space-sm);
}

.node-final .node-title {
    color: var(--paper);
    font-size: 1.5rem;
}

.node-final .node-description {
    color: rgba(255,255,255,0.85);
}

/* ============================================
   Results Footer
   ============================================ */

.results-footer {
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid var(--paper-aged);
    text-align: center;
}

.share-section {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    margin-bottom: var(--space-md);
}

.share-btn {
    padding: 0.6rem 1.2rem;
    font-family: var(--font-typewriter);
    font-size: 0.85rem;
    background: var(--ink);
    color: var(--paper);
    border: none;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.share-btn:hover {
    background: var(--blood-dark);
}

.disclaimer {
    font-size: 0.8rem;
    color: var(--ink-faded);
    font-style: italic;
    max-width: 500px;
    margin: 0 auto;
}

/* ============================================
   Error State
   ============================================ */

.error-container {
    background: var(--bg-medium);
    border: 1px solid var(--blood-dark);
    border-radius: 4px;
    padding: var(--space-md);
    text-align: center;
    margin-bottom: var(--space-lg);
}

.error-container.hidden {
    display: none;
}

.error-text {
    color: var(--paper);
}

.error-icon {
    font-size: 1.5rem;
    margin-right: var(--space-sm);
}

/* ============================================
   Stats Bar
   ============================================ */

.stats-bar {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    border-top: 1px solid var(--bg-medium);
    border-bottom: 1px solid var(--bg-medium);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--blood);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--paper-dark);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-divider {
    color: var(--bg-medium);
}

/* ============================================
   Footer
   ============================================ */

.footer {
    margin-top: auto;
    padding-top: var(--space-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.footer h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--gold);
    margin-bottom: var(--space-sm);
    letter-spacing: 0.05em;
}

.footer p {
    font-size: 0.9rem;
    color: var(--paper-dark);
    margin-bottom: var(--space-md);
}

.channel-link,
.coffee-link {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    font-family: var(--font-typewriter);
    font-size: 0.9rem;
    text-decoration: none;
    border-radius: 2px;
    transition: all 0.2s ease;
}

.channel-link {
    background: var(--blood-dark);
    color: var(--paper);
}

.channel-link:hover {
    background: var(--blood);
}

.yt-icon {
    margin-right: var(--space-xs);
}

.cough-art-link {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    font-family: var(--font-typewriter);
    font-size: 0.9rem;
    text-decoration: none;
    border-radius: 2px;
    transition: all 0.2s ease;
    background: linear-gradient(135deg, var(--blood-dark), #5c0000);
    color: var(--paper);
    border: 1px solid var(--gold-dim);
}

.cough-art-link:hover {
    background: linear-gradient(135deg, var(--blood), var(--blood-dark));
    border-color: var(--gold);
}

.art-icon {
    margin-right: var(--space-xs);
}

.coffee-link {
    background: var(--gold-dim);
    color: var(--bg-deep);
}

.coffee-link:hover {
    background: var(--gold);
}

.support-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.donate-link {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    font-family: var(--font-typewriter);
    font-size: 0.9rem;
    text-decoration: none;
    border-radius: 2px;
    transition: all 0.2s ease;
    background: var(--blood-dark);
    color: var(--paper);
}

.donate-link:hover {
    background: var(--blood);
}

.donate-icon {
    margin-right: var(--space-xs);
}

.support-note {
    font-size: 0.85rem;
    color: var(--paper-dark);
    margin-top: var(--space-xs);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-md);
    border-top: 1px solid var(--bg-medium);
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--paper-dark);
    margin-bottom: var(--space-xs);
}

.separator {
    margin: 0 var(--space-sm);
    opacity: 0.5;
}

.footer-note {
    font-style: italic;
    color: var(--ink-faded) !important;
    opacity: 0.6;
}

.footer-home-link {
    color: var(--gold);
    text-decoration: none;
}

.footer-home-link:hover {
    text-decoration: underline;
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 600px) {
    html {
        font-size: 16px;
    }
    
    .container {
        padding: var(--space-sm);
    }
    
    .header {
        padding: var(--space-md) 0;
    }
    
    .results-container {
        padding: var(--space-md);
    }
    
    .stats-bar {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .stat-divider {
        display: none;
    }
    
    .share-section {
        flex-direction: column;
    }
    
    .path-node {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .node-number {
        width: 32px;
        height: 32px;
        font-size: 0.85rem;
    }
}

/* ============================================
   Print Styles (for screenshots)
   ============================================ */

@media print {
    .atmosphere,
    .search-container,
    .search-examples,
    .share-section,
    .footer {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .results-container {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}