:root {
    --bg: #05050c;
    --card: rgba(255,255,255,0.04);
    --border: rgba(255,255,255,0.08);
    --primary: #00e5ff;
    --secondary: #ff2eb6;
    --text: #f0f2ff;
    --muted: rgba(240,242,255,0.58);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.65;
    overflow-x: hidden;
    font-weight: 400;
}

.cinematic-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.38;
    transition: transform 0.2s ease-out;
}

.orb-1 {
    width: 580px; height: 580px;
    background: radial-gradient(circle, #00e5ff 0%, transparent 70%);
    top: -18%; left: -12%;
}

.orb-2 {
    width: 480px; height: 480px;
    background: radial-gradient(circle, #ff2eb6 0%, transparent 70%);
    bottom: -12%; right: -8%;
}

.orb-3 {
    width: 380px; height: 380px;
    background: radial-gradient(circle, #7c4dff 0%, transparent 70%);
    top: 42%; left: 48%;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0,229,255,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,229,255,0.025) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(ellipse at center, black 15%, transparent 72%);
}

.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(5,5,12,0.78);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: 1140px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 1.2rem;
    letter-spacing: 0.3px;
}

.brand img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    box-shadow: 0 0 18px rgba(0,229,255,0.35);
}

.nav-links a {
    color: var(--muted);
    text-decoration: none;
    margin-left: 28px;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.25s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}

.main {
    position: relative;
    z-index: 1;
    max-width: 880px;
    margin: 0 auto;
    padding: 50px 22px 40px;
}

.hero-3d {
    text-align: center;
    margin-bottom: 48px;
}

.glitch-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2.6rem, 7vw, 4.2rem);
    font-weight: 700;
    background: linear-gradient(135deg, #00e5ff, #ff2eb6, #7c4dff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.hero-sub {
    margin-top: 12px;
    font-size: 1.15rem;
    color: var(--muted);
}

.hero-sub span {
    color: var(--primary);
    font-weight: 600;
}

.hero-line {
    width: 72px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    margin: 22px auto 0;
    border-radius: 3px;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 22px;
    padding: 36px;
    margin-bottom: 28px;
    backdrop-filter: blur(16px);
}

.describe-card h2,
.form-card h2,
.card h2 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.45rem;
    margin-bottom: 18px;
    font-weight: 600;
}

.lead {
    font-size: 1.05rem;
    color: var(--muted);
    margin-bottom: 30px;
}

.explain-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    margin-bottom: 28px;
}

.explain-item {
    background: rgba(255,255,255,0.025);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px;
}

.num {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 6px;
    font-weight: 600;
}

.explain-item h3 {
    margin-bottom: 6px;
    font-size: 1.05rem;
}

.explain-item p {
    color: var(--muted);
    font-size: 0.92rem;
}

.bottom-text {
    text-align: center;
    color: var(--muted);
    font-size: 1rem;
}

.limit {
    text-align: center;
    color: var(--primary);
    margin-bottom: 24px;
    font-weight: 500;
}

.field {
    position: relative;
    margin-bottom: 22px;
}

.field input,
.field textarea {
    width: 100%;
    padding: 17px 16px 12px;
    background: rgba(255,255,255,0.035);
    border: 1px solid var(--border);
    border-radius: 14px;
    color: var(--text);
    font-size: 1rem;
    font-family: inherit;
    transition: 0.25s;
}

.field input:focus,
.field textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0,229,255,0.12);
}

.field label {
    position: absolute;
    left: 16px;
    top: 16px;
    color: var(--muted);
    pointer-events: none;
    transition: 0.22s;
    font-size: 0.95rem;
}

.field input:focus + label,
.field input:not(:placeholder-shown) + label,
.field textarea:focus + label,
.field textarea:not(:placeholder-shown) + label {
    top: -9px;
    left: 12px;
    font-size: 0.75rem;
    background: var(--bg);
    padding: 0 6px;
    color: var(--primary);
}

.field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.btn-cinematic {
    position: relative;
    width: 100%;
    padding: 17px;
    border: none;
    border-radius: 50px;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    color: #fff;
    font-size: 1.05rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    overflow: hidden;
    margin-top: 8px;
    transition: transform 0.25s, box-shadow 0.25s;
}

.btn-cinematic:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(0,229,255,0.25);
}

.btn-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.28), transparent);
    transition: 0.55s;
}

.btn-cinematic:hover .btn-shine {
    left: 120%;
}

.toast {
    padding: 15px 20px;
    border-radius: 14px;
    text-align: center;
    font-weight: 500;
    margin-bottom: 24px;
}

.toast.success {
    background: rgba(0,190,90,0.12);
    border: 1px solid rgba(0,190,90,0.35);
}

.toast.error {
    background: rgba(255,60,60,0.12);
    border: 1px solid rgba(255,60,60,0.35);
}

.site-footer {
    position: relative;
    z-index: 1;
    margin-top: 50px;
    padding: 36px 20px 40px;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-inner {
    max-width: 600px;
    margin: 0 auto;
}

.footer-brand {
    font-size: 0.95rem;
    margin-bottom: 8px;
    color: var(--muted);
}

.footer-brand strong {
    color: var(--primary);
    font-weight: 600;
}

.footer-credit {
    font-size: 0.9rem;
    color: var(--muted);
    margin-bottom: 4px;
}

.footer-credit a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.footer-credit a:hover {
    color: #fff;
}

.footer-rights {
    font-size: 0.82rem;
    color: rgba(240,242,255,0.4);
    margin: 6px 0;
}

.footer-mail {
    font-size: 0.88rem;
    margin-top: 10px;
}

.footer-mail a {
    color: var(--primary);
    text-decoration: none;
}

.footer-mail a:hover {
    text-decoration: underline;
}

.presenter-nav {
    position: sticky;
    top: 0;
    z-index: 200;
    background: rgba(5,5,12,0.88);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    padding: 11px 0;
}

.presenter-nav-inner {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

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

.presenter-brand img {
    width: 38px;
    height: 38px;
    border-radius: 50%;
}

.presenter-brand strong {
    display: block;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.05rem;
}

.presenter-brand span {
    font-size: 0.78rem;
    opacity: 0.55;
}

.presenter-menu {
    display: flex;
    gap: 7px;
    flex-wrap: wrap;
}

.presenter-link {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 8px 15px;
    border-radius: 40px;
    text-decoration: none;
    color: rgba(255,255,255,0.7);
    font-weight: 500;
    font-size: 0.9rem;
    background: rgba(255,255,255,0.04);
    transition: 0.22s;
}

.presenter-link:hover {
    color: #fff;
    background: rgba(255,255,255,0.09);
}

.presenter-link.active {
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    color: #fff;
}

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

.presenter-secondary {
    color: rgba(255,255,255,0.55);
    text-decoration: none;
    font-size: 0.88rem;
}

.presenter-secondary:hover {
    color: var(--primary);
}

.presenter-logout {
    padding: 7px 15px;
    background: rgba(255,60,60,0.12);
    color: #ff7b7b;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.88rem;
    border: 1px solid rgba(255,60,60,0.25);
}

.admin-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.admin-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 16px 18px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    border-radius: 14px;
    flex-wrap: wrap;
}

.track-title {
    font-weight: 600;
    font-size: 1.08rem;
    margin-bottom: 3px;
}

.track-meta {
    color: var(--primary);
    font-size: 0.92rem;
    margin-bottom: 4px;
}

.track-date {
    font-size: 0.78rem;
    color: var(--muted);
}

.admin-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    align-items: center;
}

.btn-download {
    display: inline-block;
    padding: 7px 14px;
    background: linear-gradient(135deg, #ff1a4b, #cc0033);
    color: #fff !important;
    text-decoration: none;
    border-radius: 30px;
    font-size: 0.84rem;
    font-weight: 600;
}

.btn-copy {
    padding: 7px 14px;
    background: rgba(255,255,255,0.07);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 30px;
    font-size: 0.84rem;
    font-weight: 600;
    cursor: pointer;
}

.act {
    padding: 6px 13px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 0.83rem;
    font-weight: 600;
    background: rgba(0,229,255,0.13);
    color: var(--primary);
}

.act.red {
    background: rgba(255,60,60,0.13);
    color: #ff7b7b;
}

.yt {
    display: inline-block;
    background: #ff1a4b;
    color: #fff;
    text-decoration: none;
    padding: 6px 13px;
    border-radius: 30px;
    font-size: 0.83rem;
    font-weight: 600;
}

.empty {
    text-align: center;
    color: var(--muted);
    padding: 36px 0;
}

.track-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.track {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 16px 18px;
}

@media (max-width: 768px) {
    .nav-inner { flex-direction: column; gap: 12px; }
    .nav-links a { margin-left: 14px; }
    .explain-grid { grid-template-columns: 1fr; }
    .field-row { grid-template-columns: 1fr; }
    .card { padding: 26px 18px; }
    .admin-item { flex-direction: column; align-items: flex-start; }
    .presenter-nav-inner { flex-direction: column; align-items: flex-start; }
}
.site-footer.subtle {
    padding: 1.2rem 0;
    opacity: 0.55;
    font-size: 0.78rem;
    letter-spacing: 0.02em;
}

.site-footer.subtle .footer-line {
    gap: 0.35rem;
}

.site-footer.subtle a {
    opacity: 0.8;
    transition: opacity 0.2s ease;
}

.site-footer.subtle a:hover {
    opacity: 1;
}