/* PMU Peer Tutoring — student/senior PWA. Navy #0b2a4a, orange #f47a2a, Tajawal for Arabic. */
@font-face { font-family: "Tajawal"; font-weight: 400; font-display: swap; src: url("/assets/fonts/Tajawal-Regular.ttf") format("truetype"); }
@font-face { font-family: "Tajawal"; font-weight: 500; font-display: swap; src: url("/assets/fonts/Tajawal-Medium.ttf") format("truetype"); }
@font-face { font-family: "Tajawal"; font-weight: 700 900; font-display: swap; src: url("/assets/fonts/Tajawal-Bold.ttf") format("truetype"); }
:root {
  --pmu: #0b2a4a; --pmu-2: #16395f; --pmu-light: #eef2f6; --accent: #f47a2a; --accent-light: #fff4ea;
  --bg: #f4f6f8; --card: #fff; --ink: #1f2d3d; --muted: #5b6878; --line: #e3e8ee;
  --ok: #1f8a4c; --ok-bg: #e8f6ee; --err: #b42318; --err-bg: #fdecea; --info: #175cd3; --info-bg: #eaf1fd; --warn-bg: #fff6e0;
  --r: 14px; --shadow: 0 1px 2px rgba(11,42,74,.06), 0 8px 24px rgba(11,42,74,.07); --focus: 0 0 0 3px rgba(244,122,42,.45);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
html[lang="ar"] body { font-family: "Tajawal", "Segoe UI", Tahoma, Arial, sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); line-height: 1.5; padding-bottom: calc(72px + env(safe-area-inset-bottom)); }
a { color: var(--pmu); }
:focus-visible { outline: none; box-shadow: var(--focus); }
[hidden] { display: none !important; }
.top { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between; gap: .5rem; padding: .6rem 1rem; padding-top: calc(.6rem + env(safe-area-inset-top));
  background: radial-gradient(500px 200px at 95% -40%, rgba(244,122,42,.35), transparent 60%), linear-gradient(135deg, var(--pmu), var(--pmu-2)); color: #fff; }
.brand { display: flex; align-items: center; gap: .55rem; color: #fff; text-decoration: none; font-weight: 800; }
.brand .logo { width: 34px; height: 34px; border-radius: 50%; background: #fff; padding: 2px; }
.top-actions { display: flex; align-items: center; gap: .5rem; }
.lang-btn { color: #fff; font-weight: 700; text-decoration: none; border: 1px solid rgba(255,255,255,.4); border-radius: 999px; padding: .25rem .75rem; font-size: .85rem; }
.icon-btn { position: relative; color: #fff; text-decoration: none; font-size: 1.2rem; padding: .2rem .35rem; }
.badge { position: absolute; top: -4px; inset-inline-end: -6px; background: var(--accent); color: #fff; font-size: .65rem; font-weight: 800; border-radius: 999px; padding: 0 .35rem; line-height: 1.3rem; min-width: 1.3rem; text-align: center; }
.wrap { max-width: 560px; margin: 0 auto; padding: 1rem; }
.hero { padding: .5rem .25rem 1rem; }
.hero h1 { margin: 0 0 .35rem; font-size: 1.45rem; color: var(--pmu); }
.hero p { margin: 0; color: var(--muted); }
h1 { font-size: 1.35rem; color: var(--pmu); margin: .25rem 0 .9rem; }
h2 { font-size: 1.05rem; color: var(--pmu); margin: 0 0 .6rem; }
h3 { font-size: .98rem; margin: 0 0 .3rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--shadow); padding: 1rem 1.1rem; margin-bottom: 1rem; }
.center { text-align: center; }
.muted { color: var(--muted); }
small, .small { font-size: .82rem; }
.form { display: flex; flex-direction: column; gap: .35rem; }
.form label { font-weight: 600; font-size: .9rem; margin-top: .45rem; }
input, select, textarea { font: inherit; width: 100%; padding: .7rem .8rem; border: 1px solid #cdd5df; border-radius: 10px; background: #fff; color: var(--ink); }
textarea { resize: vertical; }
input:disabled { background: var(--pmu-light); color: var(--muted); }
.code-input { font-size: 1.6rem; letter-spacing: .5em; text-align: center; font-weight: 800; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: .4rem; font: inherit; font-weight: 700; padding: .7rem 1.1rem; border-radius: 999px; border: 1px solid var(--line); background: #fff; color: var(--pmu); text-decoration: none; cursor: pointer; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: #e06a1c; }
.btn-navy { background: var(--pmu); border-color: var(--pmu); color: #fff; }
.btn-ghost { background: transparent; }
.btn-danger { color: var(--err); border-color: #f3c2bd; }
.btn-sm { padding: .4rem .8rem; font-size: .85rem; }
.btn-block { width: 100%; margin-top: .8rem; }
.btn[disabled] { opacity: .55; cursor: not-allowed; }
.link-btn { background: none; border: 0; color: var(--pmu); text-decoration: underline; font: inherit; cursor: pointer; padding: .5rem 0; }
.row { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
.row-between { display: flex; gap: .5rem; align-items: center; justify-content: space-between; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; }
.flash { border-radius: 10px; padding: .7rem .9rem; margin-bottom: 1rem; font-weight: 600; }
.flash-success { background: var(--ok-bg); color: var(--ok); }
.flash-error { background: var(--err-bg); color: var(--err); }
.flash-info { background: var(--info-bg); color: var(--info); }
.flash-warn { background: var(--warn-bg); color: #8a5a00; }
.chip { display: inline-flex; align-items: center; gap: .25rem; padding: .15rem .6rem; border-radius: 999px; font-size: .78rem; font-weight: 700; background: var(--pmu-light); color: var(--pmu); }
.chip-online { background: var(--info-bg); color: var(--info); }
.chip-physical { background: var(--accent-light); color: #b4530f; }
.chip-ok { background: var(--ok-bg); color: var(--ok); }
.chip-warn { background: var(--warn-bg); color: #8a5a00; }
.chip-err { background: var(--err-bg); color: var(--err); }
.list { list-style: none; margin: 0; padding: 0; }
.list > li { border-top: 1px solid var(--line); padding: .75rem 0; }
.list > li:first-child { border-top: 0; }
.item-link { display: block; text-decoration: none; color: inherit; }
.course-code { font-weight: 800; color: var(--pmu); }
.search { position: relative; }
.search input { padding-inline-start: 2.4rem; border-radius: 999px; }
.search::before { content: "\1F50D"; position: absolute; inset-inline-start: .9rem; top: 50%; transform: translateY(-50%); font-size: .95rem; opacity: .6; }
.filters { display: flex; gap: .4rem; overflow-x: auto; padding: .6rem 0; }
.filters a, .filters button { white-space: nowrap; }
.filters select, .filters input { width: auto; flex: 0 0 auto; max-width: 14rem; }
.pill { padding: .35rem .85rem; border-radius: 999px; border: 1px solid var(--line); background: #fff; text-decoration: none; color: var(--ink); font-size: .85rem; font-weight: 600; }
.pill.on { background: var(--pmu); border-color: var(--pmu); color: #fff; }
.slot { display: flex; gap: .75rem; align-items: flex-start; }
.slot-when { min-width: 4.2rem; text-align: center; background: var(--pmu-light); border-radius: 10px; padding: .35rem .3rem; }
.slot-when b { display: block; font-size: 1.15rem; color: var(--pmu); }
.slot-when span { font-size: .72rem; color: var(--muted); font-weight: 700; }
.slot-body { flex: 1; min-width: 0; }
.slot-meta { color: var(--muted); font-size: .85rem; }
.day-head { font-weight: 800; color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; margin: 1rem .2rem .4rem; }
html[lang="ar"] .day-head { letter-spacing: 0; }
.empty { text-align: center; padding: 1.5rem 1rem; color: var(--muted); }
.empty .big { font-size: 2.2rem; display: block; }
.stars { color: var(--accent); letter-spacing: .05em; }
.star-input { display: flex; flex-direction: row-reverse; justify-content: flex-end; gap: .2rem; }
[dir=rtl] .star-input { justify-content: flex-start; }
.star-input input { position: absolute; opacity: 0; width: 1px; }
.star-input label { font-size: 2rem; color: #cfd6df; cursor: pointer; margin: 0; }
.star-input input:checked ~ label, .star-input label:hover, .star-input label:hover ~ label { color: var(--accent); }
.kv { display: grid; grid-template-columns: auto 1fr; gap: .35rem .9rem; margin: .5rem 0; }
.kv dt { color: var(--muted); font-size: .85rem; }
.kv dd { margin: 0; font-weight: 600; }
.demo-list { display: flex; flex-direction: column; gap: .4rem; }
.demo-list .btn { justify-content: space-between; }
.tabs { display: flex; gap: .3rem; margin-bottom: .8rem; overflow-x: auto; }
.tabbar { position: fixed; inset-inline: 0; bottom: 0; z-index: 30; display: grid; grid-template-columns: repeat(4, 1fr); background: #fff; border-top: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom); box-shadow: 0 -6px 20px rgba(11,42,74,.06); }
.tabbar a { display: flex; flex-direction: column; align-items: center; gap: .1rem; padding: .5rem .2rem .55rem; text-decoration: none; color: var(--muted); font-size: .72rem; font-weight: 700; }
.tabbar a .ti { font-size: 1.25rem; filter: grayscale(1); opacity: .75; }
.tabbar a.on { color: var(--accent); }
.tabbar a.on .ti { filter: none; opacity: 1; }
.check { display: flex; gap: .5rem; align-items: center; font-weight: 500 !important; }
.check input { width: auto; }
.checks { display: flex; flex-wrap: wrap; gap: .3rem .9rem; }
.week { display: grid; grid-template-columns: repeat(7, 1fr); gap: .25rem; }
.week label { display: flex; flex-direction: column; align-items: center; margin: 0; padding: .35rem 0; border: 1px solid var(--line); border-radius: 8px; font-size: .78rem; }
.week input { width: auto; }
@media (max-width: 380px) { .grid2 { grid-template-columns: 1fr; } }