/* ============================================
   GLOBAL CSS — The Decipherist
   Shared styles for all public-facing pages
   ============================================ */

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --text-primary: #e8e8e8;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    --accent: #c9a227;
    --accent-dim: #8b7019;
    --border: #2a2a2a;
    --font-mono: 'IBM Plex Mono', 'Consolas', monospace;
    --font-serif: 'Newsreader', Georgia, serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-serif);
    font-size: 18px;
    line-height: 1.75;
    min-height: 100vh;
}

/* Noise texture overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
    z-index: 1000;
}

/* ---- Hamburger Menu ---- */
.hamburger-menu {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 2000;
}

.hamburger-btn {
    width: 44px;
    height: 44px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    padding: 10px;
    transition: all 0.3s ease;
}

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

.hamburger-btn span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

.hamburger-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger-btn.active span:nth-child(2) {
    opacity: 0;
}

.hamburger-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ---- Navigation Menu ---- */
.nav-menu {
    width: 320px;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    padding: 140px 30px 30px;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 1999;
    overflow-y: auto;
}

.nav-menu.open {
    transform: translateX(0);
}

.nav-menu ul {
    list-style: none;
}

.nav-menu li {
    margin-bottom: 20px;
}

.nav-menu a {
    font-family: var(--font-mono);
    font-size: 14px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
    display: block;
    padding: 10px 0;
}

.nav-menu a:hover {
    color: var(--accent);
}

.nav-menu a::before {
    content: '\2192  ';
    color: var(--accent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nav-menu a:hover::before {
    opacity: 1;
}

/* ---- Navigation Overlay ---- */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1998;
}

.nav-overlay.open {
    opacity: 1;
    visibility: visible;
}

/* ---- Header ---- */
header {
    padding: 80px 20px 40px;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.logo {
    font-family: var(--font-mono);
    font-size: clamp(1.5rem, 5vw, 2.5rem);
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--text-primary);
    margin-bottom: 16px;
    text-transform: uppercase;
}

.logo span {
    color: var(--accent);
}

.subtitle {
    font-family: var(--font-mono);
    font-size: 14px;
    letter-spacing: 0.3em;
    color: var(--text-secondary);
    text-transform: uppercase;
}

/* ---- Footer ---- */
footer {
    text-align: center;
    padding: 40px 20px 60px;
    border-top: 1px solid var(--border);
}

.footer-tagline {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.2em;
    color: var(--text-muted);
    text-transform: uppercase;
}

.footer-signature {
    font-family: var(--font-serif);
    font-size: 20px;
    font-style: italic;
    color: var(--accent);
    margin-top: 20px;
}