:root {
    --bg-color: #050505;
    --text-primary: #e5e5e5;
    --text-secondary: #666666;
    --accent-color: #9c1515;
    --font-display: 'Cinzel', serif;
    --font-body: 'Noto Serif SC', serif;
    --nav-bg: linear-gradient(to bottom, rgba(5,5,5,0.9) 0%, rgba(5,5,5,0) 100%);
    --nav-bg-mobile: rgba(5,5,5,0.95);
}

[data-theme="clinical"] {
    --bg-color: #fcfcfc;
    --text-primary: #111111;
    --text-secondary: #888888;
    --accent-color: #1c5285;
    --nav-bg: linear-gradient(to bottom, rgba(252,252,252,0.9) 0%, rgba(252,252,252,0) 100%);
    --nav-bg-mobile: rgba(252,252,252,0.95);
}

[data-theme="archive"] {
    --bg-color: #f0ead6;
    --text-primary: #2c251e;
    --text-secondary: #7a6e60;
    --accent-color: #a63a24;
    --nav-bg: linear-gradient(to bottom, rgba(240,234,214,0.9) 0%, rgba(240,234,214,0) 100%);
    --nav-bg-mobile: rgba(240,234,214,0.95);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 2;
    overflow-x: hidden;
}

/* Film Grain Effect */
.grain {
    position: fixed;
    top: -50%;
    left: -50%;
    right: -50%;
    bottom: -50%;
    width: 200%;
    height: 200vh;
    background: transparent url('data:image/svg+xml;utf8,%3Csvg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"%3E%3Cfilter id="noiseFilter"%3E%3CfeTurbulence type="fractalNoise" baseFrequency="0.75" numOctaves="3" stitchTiles="stitch"/%3E%3C/filter%3E%3Crect width="100%25" height="100%25" filter="url(%23noiseFilter)"/%3E%3C/svg%3E');
    opacity: 0.08;
    pointer-events: none;
    z-index: 9999;
    animation: grain 8s steps(10) infinite;
}

@keyframes grain {
    0%, 100% { transform: translate(0, 0); }
    10% { transform: translate(-5%, -10%); }
    20% { transform: translate(-15%, 5%); }
    30% { transform: translate(7%, -25%); }
    40% { transform: translate(-5%, 25%); }
    50% { transform: translate(-15%, 10%); }
    60% { transform: translate(15%, 0%); }
    70% { transform: translate(0%, 15%); }
    80% { transform: translate(3%, 35%); }
    90% { transform: translate(-10%, 10%); }
}

/* Navigation */
.navigation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 2rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    background: var(--nav-bg);
}

.logo {
    font-family: var(--font-display);
    font-size: 1.2rem;
    letter-spacing: 4px;
    font-weight: 700;
}

.theme-switcher {
    display: flex;
    gap: 1.2rem;
    margin-right: auto;
    margin-left: 4rem;
}

.theme-btn {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    border: 1px solid var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.theme-btn[data-theme="dark"] { background-color: #050505; }
.theme-btn[data-theme="clinical"] { background-color: #fcfcfc; }
.theme-btn[data-theme="archive"] { background-color: #f0ead6; }

.theme-btn.active {
    border-color: var(--accent-color);
    transform: scale(1.4);
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.version-toggle {
    display: flex;
    gap: 1.5rem;
}

.version-toggle button {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-display);
    font-size: 0.9rem;
    letter-spacing: 2px;
    cursor: pointer;
    position: relative;
    padding-bottom: 5px;
    transition: color 0.4s ease;
}

.version-toggle button::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 1px;
    background-color: var(--accent-color);
    transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.version-toggle button:hover, .version-toggle button.active {
    color: var(--text-primary);
}

.version-toggle button.active::after {
    width: 100%;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-content {
    text-align: center;
    animation: fadeUp 1.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.title {
    font-size: 7rem;
    font-weight: 900;
    letter-spacing: 0.5rem;
    margin-bottom: 1.5rem;
    text-shadow: 0 10px 30px rgba(0,0,0,0.8);
}

.subtitle {
    font-family: var(--font-display);
    font-size: 1rem;
    letter-spacing: 12px;
    color: var(--accent-color);
    opacity: 0.8;
}

.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    height: 80px;
    width: 1px;
    background-color: rgba(255,255,255,0.1);
    overflow: hidden;
}

.scroll-indicator .line {
    width: 100%;
    height: 100%;
    background-color: var(--accent-color);
    animation: scrollDown 2s cubic-bezier(0.77, 0, 0.175, 1) infinite;
}

@keyframes scrollDown {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100%); }
}

/* Content */
.content-wrapper {
    max-width: 720px;
    margin: 0 auto;
    padding: 2rem 2rem 10rem;
}

.markdown-body {
    font-size: 1.15rem;
    color: var(--text-primary);
    font-weight: 300;
}

.markdown-body h1 {
    display: none; 
}

.markdown-body h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    margin-top: 5rem;
    margin-bottom: 2.5rem;
    font-weight: 400;
    letter-spacing: 2px;
    border-bottom: 1px solid var(--text-secondary);
    padding-bottom: 1rem;
    text-transform: uppercase;
}

.markdown-body p {
    margin-bottom: 1.8rem;
    text-align: justify;
    opacity: 0.85;
    letter-spacing: 0.5px;
}

.markdown-body em {
    color: var(--accent-color);
    font-style: italic;
    opacity: 0.9;
}

.markdown-body hr {
    border: 0;
    height: 1px;
    background-color: var(--text-secondary);
    opacity: 0.3;
    margin: 4rem 0;
}

.markdown-body img {
    max-width: 100%;
    border-radius: 8px;
    margin: 3rem 0;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    display: block;
}

.author-signature {
    text-align: center;
    font-family: var(--font-display);
    color: var(--accent-color);
    margin-bottom: 4rem;
    font-size: 1.1rem;
    letter-spacing: 2px;
    border-bottom: 1px solid var(--text-secondary);
    padding-bottom: 2rem;
    opacity: 0.9;
}

/* Animations for scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .title {
        font-size: 4rem;
        letter-spacing: 0.2rem;
    }
    .navigation {
        padding: 0.8rem 1.2rem;
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: space-between;
        gap: 0.8rem;
        background: var(--nav-bg-mobile);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }
    .logo {
        font-size: 1rem;
        letter-spacing: 3px;
    }
    .theme-switcher {
        margin: 0;
        gap: 0.8rem;
    }
    .version-toggle {
        width: 100%;
        flex-wrap: nowrap;
        justify-content: flex-start;
        overflow-x: auto;
        gap: 1.5rem;
        padding-bottom: 0.2rem;
        -webkit-overflow-scrolling: touch;
        -ms-overflow-style: none;
        scrollbar-width: none;
    }
    .version-toggle::-webkit-scrollbar {
        display: none;
    }
    .version-toggle button {
        white-space: nowrap;
        font-size: 0.8rem;
    }
    .subtitle {
        letter-spacing: 6px;
    }
    .content-wrapper {
        padding-top: 6rem;
    }
}

/* Views */
.hidden-view {
    display: none !important;
}

.active-view {
    display: block;
    animation: fadeIn 0.5s ease;
}

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

/* Author Selection View */
#author-selection-view {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.author-container {
    max-width: 600px;
    width: 100%;
    text-align: center;
}

.author-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.author-card {
    background: transparent;
    border: 1px solid var(--text-secondary);
    color: var(--text-primary);
    padding: 1.5rem;
    font-family: var(--font-body);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.author-card:hover {
    border-color: var(--accent-color);
    background: rgba(100, 100, 100, 0.05);
    transform: translateY(-2px);
}

.author-card .handle {
    font-family: var(--font-display);
    font-size: 0.9rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.back-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-display);
    font-size: 0.9rem;
    letter-spacing: 2px;
    cursor: pointer;
    transition: color 0.3s ease;
    padding: 0;
}

.back-btn:hover {
    color: var(--accent-color);
}