/* Öğrenci Hub — üniversite vitrin sayfası */
:root {
    --sh-primary: #4f46e5;
    --sh-primary-dark: #3730a3;
    --sh-accent: #7c3aed;
    --sh-text: #0f172a;
    --sh-muted: #64748b;
    --sh-border: rgba(99, 102, 241, 0.16);
    --sh-radius: 18px;
    --sh-font: 'Plus Jakarta Sans', 'Inter', system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
.sh-body {
    font-family: var(--sh-font);
    color: var(--sh-text);
    background: #f8fafc;
    -webkit-font-smoothing: antialiased;
}

.sh-wrap { max-width: 1140px; margin: 0 auto; padding: 0 22px; }

.sh-topbar {
    position: sticky; top: 0; z-index: 50;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--sh-border);
}
.sh-topbar__inner {
    max-width: 1140px; margin: 0 auto; padding: 12px 22px;
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.sh-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--sh-text); font-weight: 800; }
.sh-logo__icon {
    width: 40px; height: 40px; border-radius: 12px;
    background: linear-gradient(135deg, var(--sh-primary), var(--sh-accent));
    color: #fff; display: grid; place-items: center;
}
.sh-logo__text em { font-style: normal; color: var(--sh-primary); }
.sh-topnav { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.sh-topnav a:not(.sh-btn) { color: var(--sh-muted); text-decoration: none; font-size: 14px; font-weight: 600; padding: 8px 10px; }
.sh-topnav a:not(.sh-btn):hover { color: var(--sh-primary); }

.sh-btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 11px 18px; border-radius: 12px; border: none;
    font: inherit; font-size: 14px; font-weight: 700;
    cursor: pointer; text-decoration: none; transition: transform .15s, box-shadow .15s;
}
.sh-btn:hover { transform: translateY(-1px); }
.sh-btn--primary { background: linear-gradient(135deg, var(--sh-primary), var(--sh-accent)); color: #fff; box-shadow: 0 10px 24px rgba(79,70,229,.28); }
.sh-btn--ghost { background: #fff; color: var(--sh-text); border: 1px solid var(--sh-border); }
.sh-btn--white { background: #fff; color: var(--sh-primary-dark); }
.sh-btn--sm { padding: 8px 14px; font-size: 13px; }
.sh-btn--lg { padding: 14px 22px; font-size: 15px; }
.sh-btn--block { width: 100%; justify-content: center; margin-top: 10px; }

.sh-hero {
    position: relative; overflow: hidden;
    padding: 56px 0 64px;
    background: linear-gradient(180deg, #eef2ff 0%, #f8fafc 55%, #f8fafc 100%);
}
.sh-hero__glow {
    position: absolute; inset: -20% -10% auto;
    height: 420px;
    background: radial-gradient(ellipse at 30% 20%, rgba(99,102,241,.22), transparent 60%),
                radial-gradient(ellipse at 80% 0%, rgba(124,58,237,.14), transparent 50%);
    pointer-events: none;
}
.sh-hero__grid {
    position: relative;
    display: grid; grid-template-columns: 1.2fr .8fr; gap: 32px; align-items: center;
}
.sh-eyebrow {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 12px; border-radius: 999px;
    background: #fff; border: 1px solid #c7d2fe;
    color: var(--sh-primary-dark); font-size: 12px; font-weight: 800;
    text-transform: uppercase; letter-spacing: .04em;
}
.sh-eyebrow--green { background: #ecfdf5; border-color: #a7f3d0; color: #047857; }
.sh-hero h1 {
    margin: 18px 0 14px; font-size: clamp(2rem, 4.5vw, 3rem);
    line-height: 1.12; letter-spacing: -0.03em; font-weight: 800;
}
.sh-hero h1 span {
    background: linear-gradient(135deg, var(--sh-primary), var(--sh-accent));
    -webkit-background-clip: text; background-clip: text; color: transparent;
}
.sh-lead { font-size: 1.05rem; line-height: 1.7; color: var(--sh-muted); max-width: 56ch; margin: 0 0 22px; }
.sh-hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; }
.sh-trust { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 14px; }
.sh-trust li { font-size: 13px; color: var(--sh-muted); font-weight: 600; }
.sh-trust i { color: var(--sh-primary); margin-right: 4px; }

.sh-hero__stats {
    display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.sh-stat-card {
    background: rgba(255,255,255,.9);
    border: 1px solid var(--sh-border);
    border-radius: var(--sh-radius);
    padding: 20px 18px;
    box-shadow: 0 12px 30px rgba(15,23,42,.06);
}
.sh-stat-card strong { display: block; font-size: 1.75rem; color: var(--sh-primary-dark); line-height: 1.1; }
.sh-stat-card span { font-size: 12px; color: var(--sh-muted); font-weight: 700; text-transform: uppercase; letter-spacing: .04em; }

.sh-section { padding: 56px 0; }
.sh-section--alt { background: #fff; border-top: 1px solid #e2e8f0; border-bottom: 1px solid #e2e8f0; }
.sh-section__head { text-align: center; max-width: 720px; margin: 0 auto 32px; }
.sh-section__head h2 { margin: 0 0 10px; font-size: 1.65rem; font-weight: 800; }
.sh-section__head p { margin: 0; color: var(--sh-muted); line-height: 1.65; }

.sh-featured {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px;
    margin-bottom: 28px;
}
.sh-paper {
    background: #fff; border: 1px solid var(--sh-border);
    border-radius: 14px; padding: 16px 18px;
    transition: box-shadow .2s, transform .2s;
}
.sh-paper:hover { box-shadow: 0 14px 32px rgba(79,70,229,.1); transform: translateY(-2px); }
.sh-paper__type { font-size: 11px; font-weight: 800; color: var(--sh-accent); text-transform: uppercase; letter-spacing: .04em; }
.sh-paper h3 { margin: 8px 0 8px; font-size: 14px; line-height: 1.45; font-weight: 700; }
.sh-paper__meta { margin: 0; font-size: 12px; color: var(--sh-muted); line-height: 1.5; }
.sh-oa { color: #047857; font-weight: 700; }

.sh-modules {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
}
.sh-module {
    background: linear-gradient(180deg, #fff, #fafbff);
    border: 1px solid var(--sh-border); border-radius: 16px; padding: 22px 18px;
}
.sh-module i { font-size: 1.4rem; color: var(--sh-primary); margin-bottom: 10px; }
.sh-module h3 { margin: 0 0 8px; font-size: 15px; }
.sh-module p { margin: 0; font-size: 13px; color: var(--sh-muted); line-height: 1.55; }

.sh-branch-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px;
}
.sh-branch {
    display: flex; justify-content: space-between; align-items: center; gap: 8px;
    padding: 12px 14px; border-radius: 12px;
    background: #f8fafc; border: 1px solid #e2e8f0;
    font-size: 13px;
}
.sh-branch strong { font-weight: 700; }
.sh-branch span { color: var(--sh-primary); font-weight: 800; white-space: nowrap; }

.sh-uni {
    display: grid; grid-template-columns: 1.1fr .9fr; gap: 32px; align-items: start;
}
.sh-uni h2 { margin: 12px 0 14px; font-size: 1.75rem; font-weight: 800; }
.sh-uni__copy p { color: var(--sh-muted); line-height: 1.7; }
.sh-uni-list { list-style: none; margin: 18px 0; padding: 0; }
.sh-uni-list li { margin-bottom: 10px; font-size: 14px; font-weight: 600; color: #334155; }
.sh-uni-list i { color: #059669; margin-right: 8px; }
.sh-uni-contact a { color: var(--sh-primary); font-weight: 700; }

.sh-uni__widget {
    background: #fff; border: 1px solid var(--sh-border);
    border-radius: var(--sh-radius); padding: 24px;
    box-shadow: 0 18px 40px rgba(15,23,42,.08);
}
.sh-uni__widget h3 { margin: 0 0 8px; font-size: 1.1rem; }
.sh-uni-hint { margin: 0 0 12px; font-size: 13px; color: var(--sh-muted); }
.sh-linkbox { display: flex; gap: 8px; }
.sh-linkbox input {
    flex: 1; min-width: 0; padding: 11px 12px; border-radius: 10px;
    border: 1px solid #cbd5e1; font: inherit; font-size: 12px;
}
.sh-link-custom { display: block; margin-top: 14px; font-size: 12px; font-weight: 700; color: var(--sh-muted); }
.sh-link-custom input {
    display: block; width: 100%; margin-top: 6px; padding: 10px 12px;
    border-radius: 10px; border: 1px solid #cbd5e1; font: inherit;
}
.sh-uni-example { margin: 16px 0 0; font-size: 12px; color: var(--sh-muted); line-height: 1.6; }
.sh-uni-example code { background: #f1f5f9; padding: 2px 6px; border-radius: 6px; }

.sh-cta {
    padding: 56px 0;
    background: linear-gradient(135deg, var(--sh-primary-dark), var(--sh-accent));
    color: #fff; text-align: center;
}
.sh-cta h2 { margin: 0 0 10px; font-size: 1.8rem; }
.sh-cta p { margin: 0 0 22px; opacity: .9; }

.sh-footer {
    padding: 28px 0; border-top: 1px solid #e2e8f0;
    background: #fff; text-align: center; font-size: 13px; color: var(--sh-muted);
}
.sh-footer a { color: var(--sh-primary); text-decoration: none; font-weight: 600; }
.sh-footer__inner p { margin: 4px 0; }

@media (max-width: 900px) {
    .sh-hero__grid, .sh-uni, .sh-modules { grid-template-columns: 1fr; }
    .sh-topnav a:not(.sh-btn) { display: none; }
}
@media (max-width: 520px) {
    .sh-hero__stats { grid-template-columns: 1fr; }
    .sh-linkbox { flex-direction: column; }
}