/* CampusOS shared design system */
:root {
    --bg: #070b17;
    --surface: #101827;
    --surface-2: #172238;
    --text: #f3f7ff;
    --muted: #aebbd0;
    --primary: #32d5ed;
    --secondary: #9d7bff;
    --border: #2a3952;
    --max-width: 1180px;
    --shadow: 0 16px 34px rgba(0, 0, 0, .24);
    --radius: 16px;
}

* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
body {
    min-width: 320px;
    overflow-x: hidden;
    background: var(--bg);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.65;
}
body::before {
    position: fixed;
    z-index: -1;
    inset: 0;
    content: "";
    background: radial-gradient(circle at 92% 4%, rgba(50, 213, 237, .11), transparent 24rem), radial-gradient(circle at 8% 84%, rgba(157, 123, 255, .1), transparent 25rem);
    pointer-events: none;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: #b4f5ff; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 3px;
}
h1, h2, h3 { color: var(--text); line-height: 1.15; }
h1 { font-size: clamp(2.35rem, 5vw, 4.5rem); letter-spacing: -.055em; }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); letter-spacing: -.035em; }
h3 { font-size: 1.2rem; }
p { color: var(--muted); }

.skip-link {
    position: absolute;
    z-index: 1000;
    top: -5rem;
    left: 1rem;
    padding: .7rem 1rem;
    border-radius: 0 0 .5rem .5rem;
    background: var(--primary);
    color: #001018;
    font-weight: 700;
}
.skip-link:focus { top: 0; }

.site-header {
    position: sticky;
    z-index: 10;
    top: 0;
    border-bottom: 1px solid rgba(92, 117, 153, .35);
    background: rgba(7, 11, 23, .84);
    backdrop-filter: blur(16px);
}
.site-nav, main, .footer-inner, .copyright { width: min(var(--max-width), calc(100% - 3rem)); margin: 0 auto; }
.site-nav { display: flex; min-height: 4.75rem; align-items: center; justify-content: space-between; gap: 1.5rem; }
.brand { flex: 0 0 auto; color: var(--text); font-size: 1.27rem; font-weight: 800; letter-spacing: -.05em; }
.brand span { color: var(--primary); }
.brand:hover { color: var(--text); }
.nav-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .2rem 1.1rem; padding: 0; list-style: none; }
.nav-links a { display: block; padding: .45rem 0; color: var(--muted); font-size: .94rem; font-weight: 700; }
.nav-links a:hover, .nav-links .active { color: var(--primary); }
.nav-links .active { border-bottom: 2px solid var(--primary); }

main { padding: 0 0 5.5rem; }
section { margin-top: 6rem; }
.page-header { max-width: 760px; margin: 5.5rem auto 0; text-align: center; }
.page-header h1 { margin: .55rem 0 1.15rem; }
.page-header p:last-child { font-size: 1.08rem; }
.eyebrow, .panel-label { color: var(--primary); font-size: .75rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 1.5rem; margin-bottom: 1.5rem; }
.section-heading h2 { margin-top: .35rem; }
.section-heading > p { max-width: 28rem; text-align: right; }
.text-link, .card-link { font-weight: 700; }
.text-link span, .card-link span { display: inline-block; transition: transform .2s ease; }
.text-link:hover span, .card-link:hover span { transform: translateX(4px); }

.hero { display: grid; min-height: 43rem; grid-template-columns: 1.03fr .97fr; align-items: center; gap: clamp(2.25rem, 7vw, 7rem); margin-top: 0; }
.hero-content h1 { margin: .6rem 0 1.25rem; }
.hero-copy { max-width: 39rem; font-size: 1.12rem; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1.4rem; margin-top: 2rem; }
.btn, button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 3rem;
    padding: .72rem 1.2rem;
    border: 1px solid transparent;
    border-radius: .65rem;
    background: linear-gradient(135deg, var(--primary), #74def7);
    color: #03151c;
    cursor: pointer;
    font: inherit;
    font-weight: 800;
    transition: transform .2s ease, box-shadow .2s ease;
}
.btn:hover, button:hover { color: #03151c; box-shadow: 0 10px 26px rgba(50, 213, 237, .24); transform: translateY(-2px); }
.hero-visual { position: relative; min-height: 25rem; overflow: hidden; border: 1px solid rgba(108, 138, 183, .45); border-radius: calc(var(--radius) + 4px); background: var(--surface-2); box-shadow: var(--shadow), 0 0 35px rgba(50, 213, 237, .08); }
.hero-visual > img { width: 100%; height: 100%; min-height: 25rem; object-fit: cover; object-position: center; opacity: .72; }
.hero-image-shade { position: absolute; inset: 0; background: linear-gradient(145deg, rgba(7, 11, 23, .05), rgba(7, 11, 23, .78)); }
.orb { position: absolute; border-radius: 50%; filter: blur(20px); opacity: .32; }
.orb-cyan { top: 1.5rem; left: 1rem; width: 12rem; height: 12rem; background: var(--primary); }
.orb-purple { right: 1rem; bottom: 1rem; width: 11rem; height: 11rem; background: var(--secondary); }
.hero-panel {
    position: absolute;
    inset: 4rem 1rem;
    display: grid;
    align-content: center;
    gap: 1rem;
    padding: 2.25rem;
    border: 1px solid rgba(108, 138, 183, .45);
    border-radius: var(--radius);
    background: linear-gradient(145deg, rgba(23, 34, 56, .9), rgba(13, 20, 34, .78));
    backdrop-filter: blur(5px);
    box-shadow: var(--shadow);
}
.panel-row { display: flex; align-items: center; gap: .75rem; color: var(--text); font-weight: 700; }
.panel-dot { width: .65rem; height: .65rem; border-radius: 50%; }
.cyan { background: var(--primary); }.purple { background: var(--secondary); }.blue { background: #5c9dff; }

.grid { display: grid; gap: 1.25rem; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card {
    display: flex;
    min-width: 0;
    min-height: 100%;
    flex-direction: column;
    padding: 1.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: linear-gradient(145deg, rgba(23, 34, 56, .93), rgba(14, 21, 35, .95));
    box-shadow: var(--shadow);
    transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.card:hover { border-color: rgba(50, 213, 237, .75); box-shadow: var(--shadow), 0 0 24px rgba(50, 213, 237, .1); transform: translateY(-4px); }
.card h3 { margin-bottom: .65rem; }
.card-icon { margin-bottom: 1.25rem; color: var(--primary); font-size: .78rem; font-weight: 800; letter-spacing: .12em; }
.card-link { margin-top: auto; padding-top: 1.4rem; }
.event-card { position: relative; padding-left: 1.65rem; }
.event-card::before { position: absolute; top: 1.5rem; bottom: 1.5rem; left: 0; width: 3px; border-radius: 0 3px 3px 0; background: var(--primary); content: ""; }
.event-date { margin-bottom: .55rem; color: var(--primary); font-weight: 800; }
.event-meta { margin-top: auto; padding-top: 1.25rem; color: #c5d0df; font-size: .88rem; font-weight: 700; }
.featured-event { display: grid; grid-template-columns: 1.1fr .9fr; align-items: stretch; gap: 2rem; padding: clamp(1.25rem, 3vw, 2rem); border: 1px solid rgba(50, 213, 237, .55); border-radius: var(--radius); background: linear-gradient(120deg, rgba(18, 36, 57, .98), rgba(31, 23, 57, .92)); box-shadow: var(--shadow), 0 0 35px rgba(50, 213, 237, .07); }
.featured-event-copy { display: flex; flex-direction: column; align-items: flex-start; justify-content: center; padding: clamp(.5rem, 2vw, 1.5rem); }
.featured-event-copy .btn { margin-top: 1.25rem; }
.featured-event-media, .page-feature-media, .highlight-media { overflow: hidden; border-radius: calc(var(--radius) - 4px); }
.featured-event-media { min-height: 18rem; }
.featured-event-media img, .page-feature-media img, .highlight-media img { display: block; width: 100%; height: 100%; object-fit: cover; }
.featured-event h3 { margin-bottom: .7rem; font-size: clamp(1.5rem, 3vw, 2.25rem); }
.featured-event p:not(.event-date) { max-width: 47rem; }

.list { display: grid; gap: .45rem; margin: 1.1rem 0 0; padding-left: 1.1rem; color: var(--muted); }
.list li::marker { color: var(--primary); }
.highlight-section { display: grid; grid-template-columns: 1fr 1fr .8fr; gap: 2rem; padding: clamp(1.75rem, 5vw, 4rem); border: 1px solid rgba(157, 123, 255, .35); border-radius: var(--radius); background: linear-gradient(125deg, rgba(26, 26, 57, .9), rgba(15, 34, 52, .86)); }
.highlight-section h2 { margin: .4rem 0 1rem; }
.highlight-media { min-height: 14rem; border: 1px solid rgba(174, 187, 208, .2); }
.highlight-media img { min-height: 14rem; }
.highlight-media figcaption { padding: .65rem .8rem; background: rgba(7, 11, 23, .85); color: var(--muted); font-size: .78rem; }
.highlight-list { display: grid; gap: .8rem; align-content: center; padding: 0; list-style: none; color: var(--text); font-weight: 700; }
.highlight-list li { display: flex; gap: 1rem; align-items: center; padding-bottom: .8rem; border-bottom: 1px solid rgba(174, 187, 208, .2); }
.highlight-list span { color: var(--primary); font-size: .82rem; }

.page-feature { display: grid; grid-template-columns: 1fr 1fr; min-height: 23rem; align-items: stretch; gap: clamp(1.5rem, 5vw, 4rem); padding: clamp(1.25rem, 3vw, 2rem); border: 1px solid var(--border); border-radius: var(--radius); background: linear-gradient(130deg, rgba(17, 31, 49, .92), rgba(22, 21, 46, .88)); box-shadow: var(--shadow); }
.page-feature-reverse .page-feature-media { order: 2; }
.page-feature-media { min-height: 20rem; }
.page-feature-media img { min-height: 20rem; }
.page-feature-copy { display: flex; flex-direction: column; justify-content: center; max-width: 34rem; padding: 1rem; }
.page-feature-copy h2 { margin: .45rem 0 .9rem; }
.page-feature-copy .text-link { align-self: flex-start; margin-top: 1.3rem; }
.contact-layout { display: grid; grid-template-columns: .78fr 1.22fr; gap: 1.25rem; }
.contact-visual { position: relative; display: grid; min-height: 16rem; align-items: end; overflow: hidden; margin-bottom: 1.25rem; padding: clamp(1.5rem, 4vw, 2.5rem); border: 1px solid rgba(50, 213, 237, .35); border-radius: var(--radius); }
.contact-visual::after { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(7, 11, 23, .9), rgba(7, 11, 23, .25)), linear-gradient(0deg, rgba(7, 11, 23, .65), transparent 70%); content: ""; }
.contact-visual img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .7; }
.contact-visual > div { position: relative; z-index: 1; max-width: 35rem; }.contact-visual h2 { margin: .4rem 0 .6rem; }
.contact-details dl { display: grid; gap: 1rem; margin-top: 1.5rem; }
.contact-details dl div { padding-top: 1rem; border-top: 1px solid rgba(174, 187, 208, .16); }
dt { color: var(--text); font-size: .78rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
dd { margin: .2rem 0 0; color: var(--muted); }
.form-intro { margin: .55rem 0 1.3rem; font-size: .9rem; }
form { display: grid; gap: 1rem; }
.form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
label { display: block; margin-bottom: .4rem; color: var(--text); font-size: .94rem; font-weight: 700; }
input, textarea { width: 100%; padding: .78rem .9rem; border: 1px solid var(--border); border-radius: .6rem; background: #0a1221; color: var(--text); font: inherit; }
textarea { min-height: 9rem; resize: vertical; }
input:focus, textarea:focus { border-color: var(--primary); outline: none; box-shadow: 0 0 0 3px rgba(50, 213, 237, .14); }
form button { justify-self: start; }
.faq-list { display: grid; gap: .8rem; }
details { padding: 1rem 1.2rem; border: 1px solid var(--border); border-radius: .75rem; background: rgba(16, 24, 39, .82); }
summary { color: var(--text); cursor: pointer; font-weight: 800; }
details p { margin-top: .75rem; }

.site-footer { padding: 2.5rem 0 1.5rem; border-top: 1px solid var(--border); background: rgba(9, 14, 27, .72); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem 2rem; }
.footer-inner nav { display: flex; flex-wrap: wrap; gap: .5rem 1rem; }
.footer-inner nav a { color: var(--muted); font-size: .9rem; font-weight: 700; }
.footer-inner nav a:hover { color: var(--primary); }
.copyright { margin-top: 1.7rem; padding-top: 1.2rem; border-top: 1px solid rgba(174, 187, 208, .14); color: #7f8da5; font-size: .85rem; }

@media (max-width: 900px) {
    .hero { min-height: auto; grid-template-columns: 1fr; padding-top: 5rem; }
    .hero-content { text-align: center; }.hero-copy { margin-inline: auto; }.hero-actions { justify-content: center; }.hero-visual { width: min(34rem, 100%); min-height: 21rem; margin-inline: auto; }
    .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }.grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .contact-layout, .highlight-section, .page-feature { grid-template-columns: 1fr; }
    .page-feature-reverse .page-feature-media { order: 0; }
}
@media (max-width: 680px) {
    .site-nav, main, .footer-inner, .copyright { width: min(var(--max-width), calc(100% - 2rem)); }
    .site-nav { min-height: 0; flex-direction: column; align-items: flex-start; gap: .5rem; padding: .9rem 0; }
    .nav-links { justify-content: flex-start; gap: .2rem 1rem; }
    .nav-links a { font-size: .87rem; }
    section { margin-top: 4.2rem; }.page-header { margin-top: 4rem; }
    .section-heading { align-items: flex-start; flex-direction: column; gap: .5rem; }.section-heading > p { text-align: left; }
    .hero { gap: 2.5rem; padding-top: 3rem; }.hero-visual { min-height: 18rem; }.hero-panel { inset: 2rem .15rem; padding: 1.6rem; }
    .grid-2, .grid-3, .grid-4, .form-row { grid-template-columns: 1fr; }
    .featured-event { grid-template-columns: 1fr; gap: 1.25rem; }.featured-event-media { min-height: 12rem; }.featured-event-media img { min-height: 12rem; }
    .page-feature { gap: 1rem; }.page-feature-media, .page-feature-media img { min-height: 14rem; }.page-feature-copy { padding: .5rem; }
    .highlight-media, .highlight-media img { min-height: 12rem; }
    .footer-inner { align-items: flex-start; flex-direction: column; }.footer-inner nav { gap: .5rem .9rem; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}