:root {
  --bg: #f4f7fb;
  --surface: rgba(255,255,255,.88);
  --surface-solid: #ffffff;
  --surface-2: #eef4f7;
  --text: #102027;
  --muted: #667781;
  --border: rgba(16, 73, 69, .12);
  --primary: #00a865;
  --primary-2: #00d17e;
  --primary-dark: #007a4b;
  --cyan: #14b8d4;
  --violet: #7c5cff;
  --orange: #ff8247;
  --danger: #d92d20;
  --warning: #d97706;
  --shadow: 0 18px 48px rgba(13, 52, 49, .10);
  --radius: 20px;
  --sidebar: #06161f;
}

[data-theme="dark"] {
  --bg: #061018;
  --surface: rgba(11, 28, 39, .90);
  --surface-solid: #0c1b25;
  --surface-2: #102632;
  --text: #f4fbff;
  --muted: #9bb0bc;
  --border: rgba(126, 232, 202, .12);
  --shadow: 0 18px 55px rgba(0, 0, 0, .30);
  --sidebar: #030b11;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 70% 5%, rgba(20,184,212,.10), transparent 24rem),
    radial-gradient(circle at 20% 70%, rgba(0,209,126,.09), transparent 25rem),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
img { max-width: 100%; display: block; }

.shell { min-height: 100vh; display: grid; grid-template-columns: 260px minmax(0,1fr); }
.sidebar {
  position: sticky; top: 0; height: 100vh; padding: 24px 18px;
  background:
    radial-gradient(circle at 30% 0%, rgba(0,209,126,.18), transparent 16rem),
    linear-gradient(180deg, #071a22 0%, var(--sidebar) 100%);
  color: #eaf9f4; border-right: 1px solid rgba(255,255,255,.06);
  display: flex; flex-direction: column; z-index: 20;
}
.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 30px; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 14px; display:grid; place-items:center;
  background: linear-gradient(135deg, var(--primary-2), var(--cyan)); color:#001b14; font-weight:900;
  box-shadow: 0 8px 30px rgba(0,209,126,.25);
}
.brand strong { display:block; font-size: 17px; letter-spacing:.02em; }
.brand small { color:#95afa8; }
.nav-label { color:#708e88; font-size:11px; text-transform:uppercase; letter-spacing:.12em; margin:16px 12px 8px; }
.nav-link {
  display:flex; align-items:center; gap:12px; padding:12px 14px; border-radius:14px;
  color:#b7cbc5; margin:2px 0; transition:.18s ease;
}
.nav-link:hover, .nav-link.active { background:linear-gradient(90deg, rgba(0,209,126,.22), rgba(0,209,126,.06)); color:#fff; transform:translateX(2px); }
.nav-link.active { border-left:3px solid var(--primary-2); }
.nav-icon { width:22px; text-align:center; }
.sidebar-footer { margin-top:auto; display:grid; gap:10px; }
.profile-mini { display:flex; align-items:center; gap:10px; padding:12px; background:rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.07); border-radius:15px; }
.avatar { width:42px; height:42px; border-radius:50%; object-fit:cover; background:linear-gradient(135deg,#d6f8ec,#92dfc5); display:grid; place-items:center; color:#063326; font-weight:800; flex:0 0 auto; }
.avatar.lg { width:92px; height:92px; font-size:28px; }
.avatar.xl { width:124px; height:124px; font-size:34px; border:5px solid rgba(255,255,255,.75); box-shadow:var(--shadow); }

.main { min-width: 0; }
.topbar {
  height: 78px; padding: 14px 28px; display:flex; align-items:center; gap:18px; position:sticky; top:0; z-index:15;
  backdrop-filter: blur(18px); background:color-mix(in srgb, var(--surface-solid) 82%, transparent); border-bottom:1px solid var(--border);
}
.searchbox { flex:1; max-width:680px; position:relative; }
.searchbox input { width:100%; padding:13px 44px 13px 44px; border:1px solid var(--border); background:var(--surface); color:var(--text); border-radius:15px; outline:none; }
.searchbox input:focus { border-color:var(--primary); box-shadow:0 0 0 4px rgba(0,168,101,.10); }
.search-icon { position:absolute; left:16px; top:13px; color:var(--muted); }
.top-actions { margin-left:auto; display:flex; align-items:center; gap:10px; }
.icon-btn { width:42px; height:42px; border:1px solid var(--border); background:var(--surface); color:var(--text); border-radius:14px; display:grid; place-items:center; }

.content { padding:28px; max-width:1600px; margin:0 auto; }
.page-head { display:flex; justify-content:space-between; align-items:flex-start; gap:20px; margin-bottom:22px; }
.page-head h1 { margin:0 0 6px; font-size:clamp(28px,3vw,42px); letter-spacing:-.04em; }
.page-head p { margin:0; color:var(--muted); }

.grid { display:grid; gap:18px; }
.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)); }
.grid-sidebar { grid-template-columns: minmax(0,1fr) 340px; }
.card {
  background:var(--surface); border:1px solid var(--border); border-radius:var(--radius); box-shadow:var(--shadow);
  backdrop-filter:blur(16px); overflow:hidden;
}
.card-body { padding:22px; }
.card-head { padding:18px 22px; border-bottom:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; gap:14px; }
.card-head h2, .card-head h3 { margin:0; font-size:18px; }

.hero-card {
  position:relative; min-height:245px; padding:32px; overflow:hidden;
  background:
    linear-gradient(120deg, rgba(5,28,35,.96), rgba(4,56,58,.85)),
    radial-gradient(circle at 85% 25%, rgba(20,184,212,.35), transparent 16rem);
  color:#fff; border-radius:26px; box-shadow:var(--shadow);
}
.hero-card:after { content:""; position:absolute; right:-120px; top:-160px; width:430px; height:430px; border:1px solid rgba(0,255,177,.18); border-radius:50%; box-shadow:0 0 0 45px rgba(0,255,177,.025),0 0 0 90px rgba(0,255,177,.02),0 0 0 135px rgba(0,255,177,.015); }
.hero-card h1 { font-size:clamp(30px,4vw,48px); margin:0 0 10px; letter-spacing:-.04em; }
.hero-card p { color:#b8d6d2; max-width:650px; }
.hero-stats { margin-top:28px; display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:12px; position:relative; z-index:2; }
.stat-glass { padding:16px; border:1px solid rgba(255,255,255,.12); background:rgba(255,255,255,.07); border-radius:17px; backdrop-filter:blur(14px); }
.stat-glass strong { font-size:25px; display:block; }
.stat-glass span { font-size:12px; color:#b9d4d0; }

.stat-card { padding:20px; display:flex; align-items:center; gap:14px; }
.stat-icon { width:52px; height:52px; border-radius:16px; display:grid; place-items:center; color:#fff; font-size:22px; }
.stat-icon.green { background:linear-gradient(135deg,var(--primary),var(--primary-2)); }
.stat-icon.purple { background:linear-gradient(135deg,#6348e8,#9f7cff); }
.stat-icon.blue { background:linear-gradient(135deg,#1376e9,#2fb7ff); }
.stat-icon.orange { background:linear-gradient(135deg,#f36c22,#ffad56); }
.stat-card strong { font-size:28px; display:block; }
.stat-card small { color:var(--muted); }

.btn { display:inline-flex; align-items:center; justify-content:center; gap:8px; border:0; border-radius:13px; padding:11px 17px; font-weight:700; transition:.18s ease; }
.btn:hover { transform:translateY(-1px); }
.btn-primary { background:linear-gradient(135deg,var(--primary),var(--primary-2)); color:#fff; box-shadow:0 8px 24px rgba(0,168,101,.22); }
.btn-secondary { background:var(--surface-2); color:var(--text); border:1px solid var(--border); }
.btn-outline { background:transparent; color:var(--primary); border:1px solid color-mix(in srgb,var(--primary) 55%, var(--border)); }
.btn-danger { background:#fee4e2; color:#b42318; }
.btn-sm { padding:8px 12px; border-radius:10px; font-size:13px; }
.btn-block { width:100%; }

.form-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:16px; }
.form-group { display:grid; gap:7px; }
.form-group.full { grid-column:1/-1; }
label { font-size:13px; font-weight:700; }
.input, select, textarea {
  width:100%; border:1px solid var(--border); border-radius:13px; padding:12px 13px; background:var(--surface-solid); color:var(--text); outline:none;
}
.input:focus, select:focus, textarea:focus { border-color:var(--primary); box-shadow:0 0 0 4px rgba(0,168,101,.10); }
textarea { min-height:120px; resize:vertical; }
.help { font-size:12px; color:var(--muted); }
.error { color:var(--danger); font-size:12px; }
.check-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:10px; }
.check-card { display:flex; gap:9px; align-items:flex-start; padding:12px; border:1px solid var(--border); border-radius:13px; background:var(--surface-solid); }

.alert { border-radius:14px; padding:13px 16px; margin-bottom:16px; border:1px solid; }
.alert-success { background:#ecfdf3; color:#067647; border-color:#abefc6; }
.alert-warning { background:#fffaeb; color:#b54708; border-color:#fedf89; }
.alert-error { background:#fef3f2; color:#b42318; border-color:#fecdca; }
[data-theme="dark"] .alert-success { background:#073b2a; color:#8df0bd; border-color:#146c4c; }
[data-theme="dark"] .alert-warning { background:#3a2c08; color:#ffd277; border-color:#6b4b0b; }
[data-theme="dark"] .alert-error { background:#3b1111; color:#ffaaaa; border-color:#6d2222; }

.badge { display:inline-flex; align-items:center; gap:5px; padding:5px 9px; border-radius:999px; font-size:11px; font-weight:800; }
.badge-success { background:#dcfae6; color:#067647; }
.badge-warning { background:#fef0c7; color:#b54708; }
.badge-danger { background:#fee4e2; color:#b42318; }
.badge-neutral { background:var(--surface-2); color:var(--muted); }
.badge-info { background:#e0f2fe; color:#026aa2; }

.alumni-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:16px; }
.alumni-card { padding:20px; transition:.2s ease; }
.alumni-card:hover { transform:translateY(-4px); border-color:rgba(0,168,101,.35); }
.alumni-top { display:flex; gap:14px; align-items:center; }
.alumni-card h3 { margin:0 0 4px; font-size:17px; }
.meta { color:var(--muted); font-size:13px; }
.chips { display:flex; flex-wrap:wrap; gap:7px; margin-top:14px; }
.chip { background:var(--surface-2); color:var(--muted); border:1px solid var(--border); padding:6px 9px; border-radius:999px; font-size:11px; }
.card-actions { display:flex; gap:8px; margin-top:16px; }

.progress { height:8px; background:var(--surface-2); border-radius:999px; overflow:hidden; }
.progress > span { display:block; height:100%; background:linear-gradient(90deg,var(--primary),var(--cyan)); border-radius:inherit; }

.table-wrap { overflow:auto; }
table { width:100%; border-collapse:collapse; }
th, td { padding:13px 14px; text-align:left; border-bottom:1px solid var(--border); font-size:13px; vertical-align:middle; }
th { color:var(--muted); text-transform:uppercase; letter-spacing:.06em; font-size:11px; }
tr:hover td { background:color-mix(in srgb,var(--surface-2) 55%, transparent); }

.filters { display:grid; grid-template-columns:2fr repeat(3,1fr) auto; gap:10px; align-items:end; }
.pagination { display:flex; gap:6px; flex-wrap:wrap; margin-top:18px; }
.pagination a, .pagination span { min-width:36px; height:36px; display:grid; place-items:center; border:1px solid var(--border); border-radius:10px; background:var(--surface); }
.pagination .active span { background:var(--primary); color:#fff; }

.auth-page { min-height:100vh; display:grid; grid-template-columns:1.1fr .9fr; }
.auth-visual { padding:56px; display:flex; flex-direction:column; justify-content:space-between; color:#fff; background:
  linear-gradient(135deg, rgba(2,18,27,.96), rgba(0,89,73,.82)),
  radial-gradient(circle at 30% 20%, rgba(0,209,126,.35), transparent 20rem); position:relative; overflow:hidden; }
.auth-visual:after { content:""; position:absolute; inset:auto -150px -180px auto; width:520px; height:520px; border-radius:50%; border:1px solid rgba(255,255,255,.10); box-shadow:0 0 0 60px rgba(255,255,255,.025),0 0 0 120px rgba(255,255,255,.02); }
.auth-visual h1 { font-size:clamp(44px,6vw,76px); line-height:.98; letter-spacing:-.06em; max-width:700px; }
.auth-visual p { color:#bfddd6; font-size:18px; max-width:620px; }
.auth-panel { padding:42px; display:grid; place-items:center; }
.auth-box { width:min(470px,100%); }
.auth-box h2 { font-size:34px; margin:0 0 8px; letter-spacing:-.04em; }
.auth-box > p { color:var(--muted); margin:0 0 26px; }
.divider { display:flex; align-items:center; gap:10px; color:var(--muted); font-size:12px; margin:18px 0; }
.divider:before,.divider:after { content:""; height:1px; background:var(--border); flex:1; }

.profile-cover { height:210px; background:linear-gradient(120deg,#062537,#00a865 140%); position:relative; overflow:hidden; }
.profile-cover:after { content:""; position:absolute; inset:0; background:radial-gradient(circle at 75% 30%, rgba(20,184,212,.45), transparent 18rem); }
.profile-header { margin-top:-62px; position:relative; z-index:2; display:flex; align-items:flex-end; gap:20px; padding:0 28px 24px; }
.profile-header h1 { margin:0 0 5px; }
.profile-main { flex:1; }
.profile-actions { display:flex; gap:8px; }
.detail-list { display:grid; gap:14px; }
.detail-row { display:grid; grid-template-columns:150px 1fr; gap:14px; }
.detail-row dt { color:var(--muted); }
.detail-row dd { margin:0; }

.empty { padding:42px; text-align:center; color:var(--muted); }
.empty-icon { width:70px; height:70px; margin:0 auto 14px; display:grid; place-items:center; border-radius:22px; background:var(--surface-2); font-size:28px; }

.mobile-toggle { display:none; }

@media (max-width: 1180px) {
  .grid-4 { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .alumni-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .grid-sidebar { grid-template-columns:1fr; }
  .hero-stats { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .filters { grid-template-columns:1fr 1fr; }
}
@media (max-width: 860px) {
  .shell { grid-template-columns:1fr; }
  .sidebar { position:fixed; inset:0 auto 0 0; width:260px; transform:translateX(-100%); transition:.25s ease; }
  .sidebar.open { transform:translateX(0); }
  .mobile-toggle { display:grid; }
  .topbar { padding:12px 16px; }
  .content { padding:18px 14px 28px; }
  .grid-2,.grid-3,.grid-4,.alumni-grid,.form-grid { grid-template-columns:1fr; }
  .check-grid { grid-template-columns:1fr 1fr; }
  .auth-page { grid-template-columns:1fr; }
  .auth-visual { display:none; }
  .auth-panel { padding:28px 18px; }
  .page-head { flex-direction:column; }
  .profile-header { flex-direction:column; align-items:flex-start; }
  .profile-actions { width:100%; }
  .profile-actions .btn { flex:1; }
}
@media (max-width: 560px) {
  .check-grid, .filters, .hero-stats { grid-template-columns:1fr; }
  .topbar .searchbox { display:none; }
  .content { padding-top:14px; }
  .hero-card { padding:24px 18px; }
  .detail-row { grid-template-columns:1fr; gap:4px; }
}