/* ============ UTT — University Timetabling Engine ============ */
:root{
  --ink:#15242b; --ink2:#41565f; --line:#d8e0e3; --bg:#f2f5f6; --card:#fff;
  --brand:#0e5e63; --brand-dk:#0a4448;      /* deep teal — calm, academic */
  --gold:#b98a2f;                            /* locked / highlight accent */
  --ok:#1a7f4e; --warn:#b7791f; --bad:#b23a3a;
  --f2f:#e7f1ee; --f2f-b:#2f7a5f;           /* face-to-face cell */
  --vr:#eef0fa; --vr-b:#4a5ec4;             /* virtual cell */
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font:14px/1.5 "Segoe UI",system-ui,Arial,sans-serif}
a{color:var(--brand);text-decoration:none}

/* ---- shell ---- */
.topbar{background:var(--brand-dk);color:#fff;display:flex;align-items:center;
  gap:16px;padding:10px 20px}
.topbar .logo{font-weight:700;font-size:16px;letter-spacing:.4px}
.topbar .logo small{display:block;font-weight:400;font-size:11px;opacity:.75;letter-spacing:1.2px}
.topbar .who{margin-left:auto;font-size:12px;opacity:.85}
.topbar .who a{color:#ffd98a}
.nav{background:var(--brand);padding:0 12px;display:flex;flex-wrap:wrap}
.nav a{color:#e8f4f4;padding:9px 13px;font-size:13px;border-bottom:3px solid transparent}
.nav a:hover,.nav a.on{background:rgba(255,255,255,.08);border-bottom-color:var(--gold);color:#fff}
.wrap{max-width:1280px;margin:18px auto;padding:0 16px}

/* ---- page header ---- */
.page-hdr{display:flex;align-items:baseline;gap:12px;margin-bottom:14px}
.page-hdr h1{font-size:20px;margin:0}
.page-hdr .sub{color:var(--ink2);font-size:12px}

/* ---- cards / tables ---- */
.card{background:var(--card);border:1px solid var(--line);border-radius:8px;
  padding:16px;margin-bottom:16px}
.card h2{font-size:14px;margin:0 0 10px;color:var(--brand-dk);
  text-transform:uppercase;letter-spacing:.8px}
.dtbl{width:100%;border-collapse:collapse;font-size:13px}
.dtbl th{background:#eef3f4;text-align:left;padding:7px 9px;border:1px solid var(--line);
  font-size:11px;text-transform:uppercase;letter-spacing:.5px;color:var(--ink2)}
.dtbl td{padding:6px 9px;border:1px solid var(--line);vertical-align:top}
.dtbl tr:nth-child(even) td{background:#fafcfc}

/* ---- forms ---- */
.frm{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end}
.fld{display:flex;flex-direction:column;gap:3px}
.fld label{font-size:11px;text-transform:uppercase;letter-spacing:.5px;color:var(--ink2)}
input[type=text],input[type=password],input[type=number],select{
  padding:7px 9px;border:1px solid var(--line);border-radius:5px;font:inherit;
  background:#fff;min-width:120px}
input:focus,select:focus{outline:2px solid var(--brand);outline-offset:0;border-color:var(--brand)}
.btn{background:var(--brand);color:#fff;border:0;border-radius:5px;padding:8px 16px;
  font:inherit;font-weight:600;cursor:pointer}
.btn:hover{background:var(--brand-dk)}
.btn.gold{background:var(--gold)} .btn.gold:hover{background:#9a7126}
.btn.ghost{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.btn.sm{padding:3px 9px;font-size:12px;font-weight:500}
.btn.danger{background:var(--bad)}

/* ---- status / badges ---- */
.msg{padding:9px 12px;border-radius:6px;margin:10px 0;font-size:13px}
.msg.ok{background:#e6f4ec;color:var(--ok);border:1px solid #bfe3cf}
.msg.err{background:#fbe9e9;color:var(--bad);border:1px solid #efc6c6}
.badge{display:inline-block;padding:1px 8px;border-radius:10px;font-size:11px;font-weight:600}
.badge.f2f{background:var(--f2f);color:var(--f2f-b)}
.badge.vr{background:var(--vr);color:var(--vr-b)}
.badge.over{background:#fdf0e2;color:var(--warn)}
.badge.okb{background:#e6f4ec;color:var(--ok)}
.badge.badb{background:#fbe9e9;color:var(--bad)}

/* ---- dashboard stats ---- */
.stats{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}
.stat{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:8px;padding:12px 14px}
.stat b{display:block;font-size:24px;color:var(--brand-dk)}
.stat span{font-size:11px;text-transform:uppercase;letter-spacing:.6px;color:var(--ink2)}
.stat.warn{border-left-color:var(--warn)} .stat.bad{border-left-color:var(--bad)}

/* ---- THE timetable grid (the signature element) ---- */
.tt{width:100%;border-collapse:collapse;font-size:12px}
.tt th{background:var(--brand-dk);color:#fff;padding:8px 6px;border:1px solid #0c3a3d;
  font-size:11px;letter-spacing:.5px}
.tt td{border:1px solid var(--line);padding:4px;min-width:110px;height:56px;
  vertical-align:top;background:#fff}
.tt td.dayname{background:#eef3f4;font-weight:700;color:var(--brand-dk);
  min-width:80px;vertical-align:middle;text-align:center}
.cell{border-radius:5px;padding:5px 7px;margin-bottom:3px;line-height:1.3}
.cell.f2f{background:var(--f2f);border-left:3px solid var(--f2f-b)}
.cell.vr{background:var(--vr);border-left:3px solid var(--vr-b)}
.cell b{display:block;font-size:12px}
.cell small{color:var(--ink2);font-size:11px;display:block}
.cell .lock{color:var(--gold);font-weight:700}

/* ---- login ---- */
.login-bg{min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,var(--brand-dk) 0%,var(--brand) 55%,#12787e 100%)}
.login-box{background:#fff;border-radius:10px;padding:34px 32px;width:360px;
  box-shadow:0 18px 50px rgba(0,0,0,.35)}
.login-box h1{margin:0 0 2px;font-size:20px;color:var(--brand-dk)}
.login-box p{margin:0 0 20px;color:var(--ink2);font-size:12px;
  text-transform:uppercase;letter-spacing:1.5px}
.login-box .fld{margin-bottom:12px}
.login-box input{width:100%}
.login-box .btn{width:100%;margin-top:6px;padding:10px}

@media print{.topbar,.nav,.no-print{display:none!important}
  body{background:#fff}.wrap{max-width:none;margin:0}}
@media (max-width:760px){.tt td{min-width:80px}.wrap{padding:0 8px}}

/* ---------- RTL (Arabic) ---------- */
html[dir="rtl"] body { direction: rtl; }
html[dir="rtl"] .dtbl th, html[dir="rtl"] .dtbl td { text-align: right; }
html[dir="rtl"] .stat { border-left: none; border-right: 4px solid var(--teal); }
html[dir="rtl"] .stat.warn { border-right-color: var(--amber); }
html[dir="rtl"] .stat.bad { border-right-color: var(--red); }
html[dir="rtl"] .page-hdr .sub { margin-left: 0; margin-right: 12px; }
html[dir="rtl"] .tt td, html[dir="rtl"] .tt th { text-align: right; }
.langsw { color:#fff; font-weight:700; text-decoration:underline; }