:root{
  --blue:#123a63;
  --blue2:#0f2f50;
  --bg:#eef3f8;
  --card:#ffffff;
  --border:#d8e0ea;
  --text:#1f2937;
  --muted:#6b7280;
  --green:#0f766e;
  --orange:#ea580c;
  --red:#b91c1c;
  --purple:#6d28d9;
  --cyan:#0369a1;
  --soft-blue:#eff6ff;
  --soft-green:#ecfdf5;
  --soft-orange:#fff7ed;
  --soft-red:#fef2f2;
  --soft-purple:#f5f3ff;
  --soft-cyan:#ecfeff;
}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text);line-height:1.42}
a{color:inherit}
.layout{display:grid;grid-template-columns:245px 1fr;min-height:100vh}
.sidebar{background:linear-gradient(180deg,var(--blue),var(--blue2));color:white;padding:20px 16px;position:sticky;top:0;height:100vh;overflow:auto}
.brand{display:flex;gap:12px;align-items:center;border-bottom:1px solid rgba(255,255,255,.18);padding-bottom:18px;margin-bottom:18px}
.brand-eca{font-size:32px;font-weight:800;letter-spacing:5px}
.brand strong{display:block;font-size:15px}
.brand span{display:block;font-size:12px;opacity:.78;margin-top:2px}
.menu-title{font-size:11px;text-transform:uppercase;letter-spacing:.08em;opacity:.62;margin:18px 10px 8px}
.nav-link, summary{color:white;text-decoration:none;width:100%;border:0;background:transparent;text-align:left;display:flex;align-items:center;gap:10px;padding:12px;border-radius:13px;font-weight:bold;font-size:14px;cursor:pointer;opacity:.9;margin-bottom:6px;list-style:none}
summary::-webkit-details-marker{display:none}
.nav-link:hover,summary:hover{background:rgba(255,255,255,.15);opacity:1}
.nav-icon{width:30px;height:30px;border-radius:10px;background:rgba(255,255,255,.13);display:flex;align-items:center;justify-content:center;flex-shrink:0}
details[open] summary{background:rgba(255,255,255,.10)}
.submenu{margin-left:42px;margin-top:4px;margin-bottom:8px;display:grid;gap:4px}
.submenu a{color:white;text-decoration:none;font-size:13px;padding:8px 10px;border-radius:10px;opacity:.82}
.submenu a:hover{background:rgba(255,255,255,.12);opacity:1}
.main{padding:24px;overflow:auto}
.topbar{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;margin-bottom:22px}
.topbar h1{margin:0;color:#111827;font-size:28px}
.topbar p{margin:6px 0 0;color:var(--muted)}
.userbox{background:white;border:1px solid var(--border);border-radius:14px;padding:12px 14px;min-width:240px;box-shadow:0 4px 18px rgba(0,0,0,.04)}
.userbox strong,.userbox span,.userbox a{display:block;font-size:13px}
.userbox span{color:var(--muted);margin-top:3px}
.userbox a{color:var(--blue);font-weight:bold;text-decoration:none;margin-top:4px}
.grid{display:grid;gap:16px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:white;border:1px solid var(--border);border-radius:18px;padding:18px;box-shadow:0 8px 24px rgba(0,0,0,.045);margin-bottom:18px}
.card h2,.card h3{margin-top:0;color:var(--blue)}
.stat{background:white;border:1px solid var(--border);border-radius:18px;padding:18px;box-shadow:0 8px 24px rgba(0,0,0,.045);border-top:5px solid var(--blue)}
.stat.green{border-top-color:var(--green)}
.stat.orange{border-top-color:var(--orange)}
.stat.red{border-top-color:var(--red)}
.stat.purple{border-top-color:var(--purple)}
.stat.cyan{border-top-color:var(--cyan)}
.stat label{display:block;color:var(--muted);font-weight:bold;font-size:13px;margin:0}
.stat strong{display:block;font-size:31px;margin-top:6px}
.stat span{display:block;color:var(--muted);font-size:12px;margin-top:4px}
.actions{display:flex;flex-wrap:wrap;gap:8px}
.btn,button{border:0;border-radius:10px;padding:11px 14px;font-weight:bold;cursor:pointer;font-size:14px;text-decoration:none;display:inline-block}
.btn.primary,button.primary{background:var(--blue);color:white}
.btn.secondary,button.secondary{background:#e5e7eb;color:#111827}
.btn.green,button.green{background:var(--green);color:white}
.btn.orange,button.orange{background:var(--orange);color:white}
.btn.red,button.red{background:var(--red);color:white}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse;min-width:920px}
th,td{padding:12px 13px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top;font-size:14px}
th{background:#f8fafc;color:#475569;font-size:12px;text-transform:uppercase;letter-spacing:.04em}
tr:hover td{background:#fbfdff}
.pill{display:inline-flex;align-items:center;border-radius:999px;padding:5px 9px;font-size:12px;font-weight:bold;white-space:nowrap}
.pill.green{background:var(--soft-green);color:var(--green)}
.pill.orange{background:var(--soft-orange);color:var(--orange)}
.pill.red{background:var(--soft-red);color:var(--red)}
.pill.blue{background:var(--soft-blue);color:var(--blue)}
.pill.purple{background:var(--soft-purple);color:var(--purple)}
.pill.cyan{background:var(--soft-cyan);color:var(--cyan)}
label{display:block;font-weight:bold;margin:12px 0 6px}
input,select,textarea{width:100%;border:1px solid var(--border);border-radius:10px;padding:11px 12px;font-size:15px;background:white}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.filters{display:grid;grid-template-columns:1.2fr .8fr .8fr .8fr auto;gap:10px;background:#fafcff;border:1px solid var(--border);border-radius:14px;padding:12px;margin-bottom:15px}
.alert{padding:13px 15px;border-radius:12px;margin-bottom:16px;font-weight:bold}
.alert.success{background:#ecfdf5;color:#065f46}
.alert.error{background:#fef2f2;color:#991b1b}
.bar{height:10px;background:#e5e7eb;border-radius:999px;overflow:hidden;margin-top:8px}
.bar span{display:block;height:100%;background:var(--green);border-radius:999px}
.grade-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.grade-card{border:1px solid var(--border);border-radius:15px;padding:14px;background:#fbfdff}
.lang-switch{display:flex;background:#ffe8a3;border:2px solid #f59e0b;border-radius:999px;padding:4px;gap:4px;width:max-content;margin-bottom:18px}
.lang-switch button{background:transparent;color:#7c2d12;border-radius:999px;padding:8px 13px}
.lang-switch button.active{background:#f97316;color:white}
.public-page{max-width:980px;margin:24px auto;background:white;border-radius:18px;box-shadow:0 12px 35px rgba(0,0,0,.08);overflow:hidden}
.public-header{background:linear-gradient(135deg,var(--blue),var(--blue2));color:white;padding:26px 30px}
.public-header h1{margin:0;color:white;font-size:26px}
.public-header p{margin:8px 0 0;opacity:.9}
.public-content{padding:28px 30px}
.notice{background:#f4f7fb;border:1px solid var(--border);border-radius:14px;padding:16px;margin-bottom:20px}
.student-card{border:1px solid var(--border);border-radius:14px;padding:15px;margin-bottom:12px;background:#fff}
.consent-options{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.option{border:1px solid var(--border);border-radius:12px;padding:13px;display:flex;gap:10px;background:#fafafa;cursor:pointer}
.signature-pad{width:100%;height:170px;border:1px dashed #94a3b8;border-radius:10px;background:white;touch-action:none}
.declaration{margin-top:14px;border:1px solid var(--border);background:#fff7ed;border-radius:14px;padding:14px;display:flex;gap:12px}
.declaration input{width:auto;transform:scale(1.2)}
@media(max-width:1100px){.layout{grid-template-columns:1fr}.sidebar{height:auto;position:relative}.grid-4,.grid-3,.grid-2,.grade-grid{grid-template-columns:1fr 1fr}.filters{grid-template-columns:1fr 1fr}}
@media(max-width:680px){.main{padding:15px}.topbar{display:block}.userbox{margin-top:12px}.grid-4,.grid-3,.grid-2,.grade-grid,.filters,.form-row,.consent-options{grid-template-columns:1fr}.actions{flex-direction:column}.btn,button{width:100%;text-align:center}.public-page{margin:0;border-radius:0}.public-header,.public-content{padding:20px 16px}.signature-pad{height:210px}table{min-width:850px}}