:root{
  --bg:#f4f7fb;--card:#fff;--text:#1d2633;--muted:#6b7280;--primary:#2563eb;--primary2:#1e40af;--danger:#dc2626;--ok:#16a34a;--border:#e5e7eb;--shadow:0 16px 50px rgba(15,23,42,.12);
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;background:linear-gradient(135deg,#eef5ff,#f8fbff);color:var(--text)}
a{text-decoration:none;color:inherit}
.center-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.login-card{width:100%;max-width:430px;background:var(--card);border-radius:28px;padding:34px;box-shadow:var(--shadow);border:1px solid var(--border)}
.logo{display:flex;align-items:center;gap:12px;margin-bottom:20px}.logo-mark{width:54px;height:54px;border-radius:18px;background:linear-gradient(135deg,var(--primary),#06b6d4);display:grid;place-items:center;color:#fff;font-size:26px;font-weight:800}.logo h1{font-size:24px;margin:0}.logo p{margin:4px 0 0;color:var(--muted);font-size:14px}
.form-group{margin:16px 0}.form-group label{display:block;font-weight:700;margin-bottom:8px}
.input,.select,textarea{width:100%;padding:14px 15px;border:1px solid var(--border);border-radius:14px;background:#fff;font-size:15px;outline:none}
.input:focus,.select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:14px;padding:13px 18px;font-weight:800;cursor:pointer;background:var(--primary);color:#fff;transition:.18s}
.btn:hover{background:var(--primary2);transform:translateY(-1px)}
.btn-full{width:100%}.btn-danger{background:var(--danger)}.btn-ok{background:var(--ok)}.btn-light{background:#eef2ff;color:#1e40af}.btn-light:hover{background:#dfe8ff}
.alert{padding:12px 14px;border-radius:14px;margin:14px 0;background:#fff7ed;color:#9a3412;border:1px solid #fed7aa}.success{background:#ecfdf5;color:#166534;border-color:#bbf7d0}
.layout{display:grid;grid-template-columns:270px 1fr;min-height:100vh}
.sidebar{background:linear-gradient(180deg,#0f172a,#08132f);color:#fff;padding:22px;position:sticky;top:0;height:100vh}
.brand{font-size:22px;font-weight:900;margin-bottom:22px}
.menu a{display:block;padding:13px 14px;border-radius:14px;margin:8px 0;color:#dbeafe;transition:.18s}
.menu a:hover,.menu a.active{background:rgba(255,255,255,.12);color:#fff}
.main{padding:26px}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;gap:16px}
.topbar h2{margin:0;font-size:28px}
.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.card{background:#fff;border:1px solid var(--border);border-radius:24px;padding:22px;box-shadow:0 8px 24px rgba(15,23,42,.06)}
.card-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px}
.card-head h3{margin:0}
.pill{display:inline-flex;align-items:center;padding:7px 12px;border-radius:999px;background:#eef2ff;color:#334155;font-size:12px;font-weight:800}
.pill-live{background:#dcfce7;color:#166534}
.stat .num{font-size:34px;font-weight:900}.stat .label{color:var(--muted);margin-top:6px}
.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:13px;border-bottom:1px solid var(--border);text-align:left;font-size:14px}.table th{background:#f8fafc;font-weight:900}
.badge{padding:6px 10px;border-radius:999px;font-size:12px;font-weight:800}.badge-active{background:#dcfce7;color:#166534}.badge-completed{background:#e0e7ff;color:#3730a3}.badge-auto_closed{background:#fee2e2;color:#991b1b}
.session-hero{display:grid;grid-template-columns:1.2fr .8fr;gap:20px}
.highlight-card{background:linear-gradient(180deg,#ffffff,#f9fbff)}
.quick-card{background:linear-gradient(180deg,#ffffff,#fbfbff)}
.timer{font-size:58px;font-weight:950;letter-spacing:-1px;color:#1e293b;margin:8px 0 16px}
.quick{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.quick-btn{min-height:48px;border:1px solid #dbe4ff}
.footer-note{color:var(--muted);font-size:13px;margin-top:16px}.no-top{margin-top:4px}
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}.filters .input,.filters .select{max-width:220px}
.section-title-row{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;margin-bottom:10px}
.tool-note{padding:10px 14px;background:#f8fafc;border:1px solid var(--border);border-radius:14px;color:#475569;font-size:13px;font-weight:700}
.tools-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;margin-top:15px}
.modern-tools-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.beautiful-tool{display:flex;flex-direction:column;align-items:center;text-align:center;gap:10px;background:linear-gradient(180deg,#ffffff 0%,#f8fbff 100%);border:1px solid #dbe5f1;border-radius:22px;padding:20px 16px;min-height:180px;box-shadow:0 10px 26px rgba(15,23,42,.06);transition:.18s}
.beautiful-tool:hover{transform:translateY(-3px);box-shadow:0 16px 30px rgba(15,23,42,.12);border-color:#bfd2ff;background:linear-gradient(180deg,#ffffff,#eef4ff)}
.tool-icon{width:62px;height:62px;border-radius:18px;display:grid;place-items:center;font-size:30px;background:linear-gradient(135deg,#eff6ff,#dbeafe);box-shadow:inset 0 1px 0 rgba(255,255,255,.8)}
.tool-title{font-size:17px;font-weight:900;color:#0f172a;line-height:1.2}
.tool-desc{font-size:13px;line-height:1.45;color:#64748b}
.info-rule-card{background:linear-gradient(180deg,#fff,#fbfdff)}
.session-meta p{margin:12px 0;font-size:16px}
@media(max-width:1280px){.modern-tools-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:900px){.layout{grid-template-columns:1fr}.sidebar{height:auto;position:relative}.grid{grid-template-columns:1fr 1fr}.session-hero{grid-template-columns:1fr}.modern-tools-grid{grid-template-columns:repeat(2,1fr)}.tool-note{display:none}}
@media(max-width:560px){.grid{grid-template-columns:1fr}.topbar{display:block}.quick{grid-template-columns:1fr}.modern-tools-grid{grid-template-columns:1fr}.timer{font-size:44px}}