/* === PROJECT NEXUS - Theme-Aware Base CSS ===
   All colors reference var(--t-*) set by theme-engine.js */

@import url('https://fonts.googleapis.com/css2?family=Audiowide&family=Chakra+Petch:wght@300;400;500;600;700&family=Share+Tech+Mono&display=swap');

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Chakra Petch', sans-serif;
    background: var(--t-bg, #04050a);
    color: var(--t-text, #c8ccd4);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background .6s, color .6s;
}

/* Canvas bg */
#bgCanvas { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }

/* Scanlines */
.scanlines {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: 1; pointer-events: none;
    background: repeating-linear-gradient(0deg, transparent, transparent 2px, var(--t-scanline, rgba(0,0,0,0.03)) 2px, var(--t-scanline, rgba(0,0,0,0.03)) 4px);
}

/* Nav */
nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    display: flex; justify-content: space-between; align-items: center;
    padding: 1rem 2rem;
    background: color-mix(in srgb, var(--t-bg) 90%, transparent);
    backdrop-filter: blur(30px);
    border-bottom: 1px solid var(--t-border);
    transition: background .6s, border-color .6s;
}
.logo {
    font-family: 'Audiowide', sans-serif; font-size: 1.1rem; letter-spacing: 3px; text-decoration: none;
    background: linear-gradient(135deg, var(--t-accent), var(--t-accent2));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.logo-sub { font-family: 'Share Tech Mono', monospace; font-size: .6rem; color: var(--t-muted); letter-spacing: 3px; display: block; margin-top: 2px; }

/* Nav links */
.nav-links, .nav-right { display: flex; align-items: center; gap: 1.5rem; }
.nav-links a, .nav-right a {
    color: var(--t-muted); text-decoration: none; font-size: .85rem; transition: color .3s;
    font-family: 'Audiowide', sans-serif; font-size: .65rem; letter-spacing: 1px;
}
.nav-links a:hover, .nav-right a:hover { color: var(--t-accent); }

.nav-status { font-family: 'Share Tech Mono', monospace; font-size: .75rem; color: var(--t-success); display: flex; align-items: center; gap: .4rem; }
.nav-status .dot { width: 6px; height: 6px; background: var(--t-success); border-radius: 50%; animation: blink 2s infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.3} }

.btn-access {
    padding: .5rem 1.2rem; border: 1px solid color-mix(in srgb, var(--t-accent) 30%, transparent);
    background: color-mix(in srgb, var(--t-accent) 5%, transparent);
    color: var(--t-accent); font-family: 'Audiowide', sans-serif; font-size: .65rem;
    letter-spacing: 2px; text-transform: uppercase; text-decoration: none;
    border-radius: 3px; transition: all .3s; cursor: pointer;
}
.btn-access:hover { background: color-mix(in srgb, var(--t-accent) 15%, transparent); box-shadow: 0 0 25px var(--t-glow); }

/* Headings */
h1, h2, h3, .sec-title, .form-title, .page-title {
    font-family: 'Audiowide', sans-serif; color: var(--t-heading);
}

/* Tags */
.sec-tag, .hero-badge, .page-tag, .q-cat {
    font-family: 'Share Tech Mono', monospace; font-size: .7rem; letter-spacing: 4px; text-transform: uppercase;
}

/* Buttons */
.btn, .btn-primary, .btn-submit, .hero-cta {
    font-family: 'Audiowide', sans-serif; font-size: .85rem; letter-spacing: 2px; text-transform: uppercase;
    border: none; border-radius: 5px; cursor: pointer; transition: all .3s;
    text-decoration: none; display: inline-flex; align-items: center; gap: .6rem;
}
.btn-primary, .btn-submit, .hero-cta {
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, var(--t-accent), var(--t-accent2));
    color: var(--t-btn-text); position: relative; overflow: hidden;
}
.btn-primary:hover, .btn-submit:hover, .hero-cta:hover {
    transform: translateY(-2px); box-shadow: 0 12px 40px var(--t-glow);
}
.btn-primary::after, .btn-submit::after, .hero-cta::after {
    content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    animation: shine 3s infinite;
}
@keyframes shine { 0%{left:-100%} 60%,100%{left:100%} }

.btn-ghost {
    padding: 1rem 2rem; border: 1px solid color-mix(in srgb, var(--t-accent) 25%, transparent);
    background: transparent; color: var(--t-accent);
    font-family: 'Audiowide', sans-serif; font-size: .75rem; letter-spacing: 2px; text-transform: uppercase;
    border-radius: 5px; transition: all .3s; cursor: pointer; text-decoration: none;
    display: inline-flex; align-items: center; gap: .5rem;
}
.btn-ghost:hover { background: color-mix(in srgb, var(--t-accent) 8%, transparent); box-shadow: 0 0 30px color-mix(in srgb, var(--t-accent) 15%, transparent); }

/* Cards */
.card, .form-card, .q-card, .gate-card, .result-card, .ranking-card, .already-card, .locked-card, .stat-card {
    background: var(--t-card);
    border: 1px solid var(--t-border);
    border-radius: 16px; transition: all .4s;
}
.card::before, .form-card::before, .q-card::before, .ranking-card::before {
    content: ''; display: block; height: 2px;
    background: linear-gradient(90deg, transparent, var(--t-accent), var(--t-accent2), transparent);
}

/* Inputs */
.form-input, .field input {
    width: 100%; padding: .85rem 1rem;
    background: var(--t-input-bg); border: 1px solid var(--t-border);
    border-radius: 8px; color: var(--t-heading);
    font-family: 'Chakra Petch', sans-serif; font-size: 1rem;
    transition: all .3s; outline: none;
}
.form-input:focus, .field input:focus {
    border-color: var(--t-accent);
    box-shadow: 0 0 20px color-mix(in srgb, var(--t-accent) 10%, transparent);
}
.form-input::placeholder, .field input::placeholder { color: var(--t-muted); }

/* Labels */
.field label, .form-group label {
    display: block; font-family: 'Audiowide', sans-serif; font-size: .6rem;
    letter-spacing: 2px; text-transform: uppercase; color: var(--t-muted); margin-bottom: .5rem;
}

/* Hero gradient text */
.hero-title .t2 {
    background: linear-gradient(135deg, #fff 0%, var(--t-accent) 40%, var(--t-accent2) 70%, var(--t-accent3) 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-size: 300% 300%; animation: megaGrad 6s ease infinite;
}
@keyframes megaGrad { 0%,100%{background-position:0% 50%} 50%{background-position:100% 50%} }

/* Light theme overrides */
.theme-light .scanlines { background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.01) 2px, rgba(0,0,0,0.01) 4px); }
.theme-light .form-input, .theme-light .field input { color: #222; }
.theme-light .form-input::placeholder, .theme-light .field input::placeholder { color: #aaa; }
.theme-light nav { background: color-mix(in srgb, var(--t-bg) 85%, transparent); }

/* Footer */
footer {
    position: relative; z-index: 2; text-align: center; padding: 3rem;
    border-top: 1px solid var(--t-border); color: var(--t-muted); font-size: .8rem;
}
footer a { color: var(--t-accent); text-decoration: none; }

/* Responsive */
@media (max-width: 768px) {
    nav { padding: .8rem 1rem; }
    .nav-status { display: none; }
}

/* Transition when theme loads */
body:not(.theme-loaded) { opacity: 0; }
body.theme-loaded { opacity: 1; transition: opacity .3s; }