:root{--bg:#f6f4ef;--panel:#fffdf8;--ink:#27221d;--muted:#7d7469;--line:#e7dfd2;--brand:#7357ff;--brand2:#ff8a65;--green:#2f9e44;--amber:#d97706;--red:#dc2626;--blue:#2563eb;--shadow:0 18px 45px rgba(39,34,29,.08)}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif;color:var(--ink);background:linear-gradient(140deg,#fbf8ef,#f3f0ff);display:grid;grid-template-columns:280px 1fr;min-height:100vh}.sidebar{padding:22px;background:#17141f;color:white;position:sticky;top:0;height:100vh}.brand{display:flex;gap:12px;align-items:center;margin-bottom:26px}.brand small{display:block;color:#bcb5cf;margin-top:3px}.logo{width:46px;height:46px;border-radius:15px;background:linear-gradient(135deg,var(--brand),var(--brand2));display:grid;place-items:center;font-weight:800}nav{display:grid;gap:8px}nav button{border:0;width:100%;text-align:left;padding:12px 14px;border-radius:14px;background:transparent;color:#eee;cursor:pointer;font-size:15px}nav button.active,nav button:hover{background:rgba(255,255,255,.12)}.pill{float:right;background:rgba(255,255,255,.18);padding:1px 8px;border-radius:99px;font-size:12px}.side-note{position:absolute;bottom:20px;left:22px;right:22px;padding:14px;border:1px solid rgba(255,255,255,.12);border-radius:16px;background:rgba(255,255,255,.07);font-size:13px}.side-note code{display:block;white-space:normal;color:#d7ccff;margin-top:7px}main{padding:26px 34px}.topbar{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;margin-bottom:22px}h1{margin:0;font-size:32px}p{color:var(--muted)}.actions{display:flex;gap:10px;flex-wrap:wrap}.button,button{border:0;border-radius:12px;background:var(--brand);color:white;padding:10px 13px;font-weight:700;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:7px}.ghost{background:white;color:var(--ink);border:1px solid var(--line)}.danger{background:#fee2e2;color:#991b1b}.green{background:#dcfce7;color:#166534}.amber{background:#fef3c7;color:#92400e}.grid{display:grid;gap:16px}.cards{grid-template-columns:repeat(4,minmax(160px,1fr))}.card,.panel{background:rgba(255,253,248,.85);border:1px solid rgba(231,223,210,.75);border-radius:22px;box-shadow:var(--shadow);padding:18px}.card strong{display:block;font-size:29px;margin-top:8px}.panel h2,.panel h3{margin-top:0}.toolbar{display:flex;gap:10px;align-items:center;justify-content:space-between;margin:12px 0;flex-wrap:wrap}.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0 16px}.tabs button{background:white;color:var(--ink);border:1px solid var(--line)}.tabs button.active{background:var(--ink);color:white}.table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:white}table{width:100%;border-collapse:collapse;min-width:980px}th,td{padding:11px 12px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}th{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);background:#fbfaf6;position:sticky;top:0}td.phone,th.phone{min-width:145px;white-space:nowrap}tr.interest-registration td{background:#fff7ed}.badge{display:inline-flex;border-radius:999px;padding:4px 9px;font-size:12px;font-weight:800;background:#eee;margin:2px}.b-green{background:#dcfce7;color:#166534}.b-amber{background:#fef3c7;color:#92400e}.b-blue{background:#dbeafe;color:#1d4ed8}.b-red{background:#fee2e2;color:#991b1b}.muted{color:var(--muted)}select,input,textarea{width:100%;border:1px solid var(--line);border-radius:10px;padding:8px 9px;background:white;color:var(--ink)}textarea{min-height:40px}.inline{min-width:120px}.wide{min-width:180px}.row-actions{display:flex;gap:6px;flex-wrap:wrap}.row-actions button{padding:7px 9px;font-size:12px}.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}.course-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px}.group-card{border:1px solid var(--line);border-radius:18px;background:white;padding:15px}.students-list{display:grid;gap:8px;margin-top:10px}.student-row{display:flex;justify-content:space-between;gap:10px;border:1px solid var(--line);border-radius:13px;padding:9px;align-items:center}.modal{position:fixed;inset:0;background:rgba(20,16,30,.5);display:grid;place-items:center;padding:20px;z-index:20}.hidden{display:none}.modal-card{width:min(720px,100%);max-height:90vh;overflow:auto;background:white;border-radius:22px;padding:22px;position:relative}.modal-close{position:absolute;right:14px;top:12px;background:#eee;color:#333;border-radius:50%;width:34px;height:34px;padding:0}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}.form-grid label{font-weight:700;font-size:13px}.form-grid label span{display:block;margin-bottom:5px}.form-actions{grid-column:1/-1;display:flex;justify-content:flex-end;gap:10px;margin-top:8px}.notice{background:#eef2ff;border:1px solid #c7d2fe;color:#312e81;padding:12px;border-radius:14px;margin:12px 0}.empty{color:var(--muted);padding:18px}.toast{position:fixed;right:20px;bottom:20px;background:#17141f;color:white;padding:13px 15px;border-radius:14px;box-shadow:var(--shadow);z-index:30}@media(max-width:900px){body{grid-template-columns:1fr}.sidebar{position:relative;height:auto}.side-note{position:static;margin-top:20px}main{padding:18px}.cards{grid-template-columns:repeat(2,1fr)}.topbar,.two{display:block}.form-grid{grid-template-columns:1fr}}