:root {
    --bg: #050505;
    --text: #f5f5f5;
    --muted: #b5b5b5;
    --line: #1f1f1f;
    --accent: #ffffff;
}

* {
    box-sizing: border-box;
}

html {
    background: var(--bg);
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Space Grotesk", "Segoe UI", "Arial", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at 15% 10%, rgba(255, 255, 255, 0.08), transparent 35%),
        radial-gradient(circle at 85% 0%, rgba(255, 255, 255, 0.05), transparent 30%),
        var(--bg);
    line-height: 1.6;
    animation: page-enter 300ms ease-out both;
}

.site-header {
    position: sticky;
    top: 0;
    backdrop-filter: blur(8px);
    background: rgba(5, 5, 5, 0.72);
    border-bottom: 1px solid var(--line);
    padding: 1.5rem 1rem 1rem;
}

.site-header h1 {
    margin: 0 0 0.9rem;
    text-align: center;
    font-size: clamp(1.5rem, 2.2vw, 2rem);
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

nav {
    position: relative;
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: nowrap;
    padding-bottom: 0.35rem;
}

nav a {
    color: var(--text);
    text-decoration: none;
    font-size: 0.9rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    border: 1px solid var(--line);
    padding: 0.45rem 0.8rem;
    transition: border-color 0.2s ease, transform 0.2s ease;
}

nav a:hover,
nav a:focus-visible,
nav a.active {
    border-color: var(--accent);
    transform: translateY(-1px);
}

.nav-indicator {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.26s ease, width 0.26s ease, opacity 0.18s ease;
}

main {
    width: min(900px, 92vw);
    margin: 2rem auto 3rem;
    display: grid;
    gap: 1.2rem;
}

.panel {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.02);
    padding: 1.3rem;
}

.panel h2 {
    margin: 0 0 0.6rem;
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.panel p {
    margin: 0;
    color: var(--muted);
    max-width: 65ch;
}

.panel p + p {
    margin-top: 0.9rem;
}

.pager {
    margin-top: 1.2rem;
    display: flex;
    gap: 0.7rem;
    flex-wrap: wrap;
}

.pager a {
    color: var(--text);
    text-decoration: none;
    border: 1px solid var(--line);
    padding: 0.35rem 0.75rem;
    font-size: 0.82rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: border-color 0.2s ease;
}

.pager a:hover,
.pager a:focus-visible {
    border-color: var(--accent);
}

.site-footer {
    width: min(900px, 92vw);
    margin: 0 auto 2rem;
    padding-top: 1.1rem;
    border-top: 1px solid var(--line);
}

.site-footer p {
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.7rem;
    color: var(--muted);
    font-size: 0.74rem;
    letter-spacing: 0.24em;
    text-transform: uppercase;
}

.site-footer p::before,
.site-footer p::after {
    content: "";
    width: 32px;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--line), transparent);
}

.site-footer span {
    color: var(--text);
    letter-spacing: 0.16em;
    text-shadow: 0 0 12px rgba(255, 255, 255, 0.2);
}

body.is-leaving {
    animation: page-exit 180ms ease-in both;
}

@keyframes page-enter {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes page-exit {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(4px);
    }
}

@media (prefers-reduced-motion: reduce) {
    body,
    body.is-leaving,
    nav a,
    .pager a,
    .nav-indicator {
        animation: none;
        transition: none;
        transform: none;
    }
}

@media (max-width: 520px) {
    .site-header {
        padding-top: 1.1rem;
    }

    nav {
        gap: 0.6rem;
    }

    nav a {
        font-size: 0.78rem;
        padding: 0.35rem 0.65rem;
    }

    .site-footer p {
        gap: 0.45rem;
        letter-spacing: 0.14em;
        font-size: 0.7rem;
    }

    .site-footer p::before,
    .site-footer p::after {
        width: 20px;
    }
}