/* ============================================================
   Department of Medicine — Kuwait University
   Colours derived from the KU logo:
     KU cyan  #00aeef  ·  KU gold #fff200  ·  black · white
   Institutional treatment: deep navy (darkened KU blue) as primary,
   KU cyan as bright accent, softened gold as secondary accent.
   Display: Newsreader (serif)  Body: Inter  Arabic: Noto Naskh/Sans Arabic
   ============================================================ */

:root {
  --ink:      #062a3d;   /* deep navy — darkened KU blue */
  --ink-2:    #0a3d54;
  --ku-blue:  #00aeef;   /* signature KU cyan */
  --ku-blue-d:#0090c8;
  --brass:    #e6b800;   /* softened KU gold */
  --brass-2:  #b98a00;   /* readable gold for text */
  --paper:    #f6f7f5;
  --paper-2:  #eceef0;
  --card:     #ffffff;
  --slate:    #47585e;
  --line:     #dbe0e2;
  --line-2:   #c6ced1;
  --danger:   #a2412f;
  --ok:       #2f6b4f;

  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --wrap: 1120px;
  --radius: 6px;
  --shadow: 0 1px 2px rgba(6,42,61,.06), 0 8px 24px rgba(6,42,61,.07);
}

html[dir="rtl"] body { font-family: "Noto Sans Arabic", var(--sans); }
html[dir="rtl"] .serif,
html[dir="rtl"] h1, html[dir="rtl"] h2, html[dir="rtl"] h3,
html[dir="rtl"] .display { font-family: "Noto Naskh Arabic", var(--serif); }

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { font-family: var(--serif); font-weight: 500; line-height: 1.15; margin: 0; }
a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--brass-2); }
img { max-width: 100%; display: block; }

.eyebrow {
  font-size: .74rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--brass-2); font-weight: 600;
}
html[dir="rtl"] .eyebrow { letter-spacing: 0; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(247,245,239,.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar .wrap { display: flex; align-items: center; gap: 20px; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; line-height: 1.1; }
.brand-logo { width: 40px; height: 40px; object-fit: contain; }
.brand-text { display: flex; flex-direction: column; }
.brand b { font-family: var(--serif); font-size: 1.12rem; font-weight: 600; }
.brand span { font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--slate); }
.nav { margin-inline-start: auto; display: flex; align-items: center; gap: 22px; }
.nav a { font-size: .9rem; color: var(--slate); }
.nav a:hover { color: var(--ink); }
.lang-toggle { font-size: .82rem; border: 1px solid var(--line-2); border-radius: 999px; padding: 4px 12px; color: var(--ink); }
.btn-signin { font-size: .85rem; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--sans); font-size: .92rem; font-weight: 500;
  padding: 11px 20px; border-radius: var(--radius);
  border: 1px solid transparent; cursor: pointer; transition: .15s;
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--ink-2); color: #fff; }
.btn-ghost { background: transparent; border-color: var(--line-2); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }
.btn-brass { background: var(--brass); color: #fff; }
.btn-brass:hover { background: var(--brass-2); color: #fff; }
.btn-sm { padding: 7px 13px; font-size: .82rem; }
.btn-danger { background: transparent; color: var(--danger); border-color: #e0c9c2; }
.btn-danger:hover { background: var(--danger); color: #fff; }

/* ---------- hero ---------- */
.hero {
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(0,174,239,.22), transparent 55%),
    linear-gradient(180deg, #062a3d, #041d2b);
  color: #eef5f8; padding: 88px 0 76px; position: relative; overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 100% 2.2rem; opacity: .5; pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; max-width: 880px; }
.hero .eyebrow { color: var(--brass); }
.hero h1 {
  font-size: clamp(2.3rem, 5vw, 3.7rem); color: #fff; margin: 18px 0 20px;
  letter-spacing: -.01em;
}
.hero p { font-size: 1.16rem; color: #cdd8d6; max-width: 640px; }
.hero-actions { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }

/* ---------- stats strip ---------- */
.stats {
  background: var(--card); border-bottom: 1px solid var(--line);
  border-top: 3px solid var(--ku-blue);
}
.stats .wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat {
  padding: 34px 24px; text-align: center; border-inline-start: 1px solid var(--line);
}
.stat:first-child { border-inline-start: none; }
.stat .num { font-family: var(--serif); font-size: 2.7rem; color: var(--ink); line-height: 1; }
.stat .lbl { font-size: .82rem; color: var(--slate); margin-top: 8px; letter-spacing: .02em; }

/* ---------- section frame ---------- */
.section { padding: 74px 0; }
.section-head { max-width: 640px; margin-bottom: 40px; }
.section-head h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); margin: 10px 0 12px; }
.section-head p { color: var(--slate); margin: 0; }

/* ---------- lab index (signature element) ---------- */
.lab-index { border-top: 1px solid var(--line-2); }
.lab-row {
  display: grid; grid-template-columns: 54px 1fr auto;
  gap: 24px; align-items: center;
  padding: 26px 8px; border-bottom: 1px solid var(--line);
  transition: background .15s;
}
.lab-row:hover { background: var(--paper-2); }
.lab-row .idx { font-family: var(--serif); font-size: 1.2rem; color: var(--brass-2); }
.lab-row .body h3 { font-size: 1.4rem; margin-bottom: 6px; }
.lab-row .body .pi { font-size: .9rem; color: var(--slate); }
.lab-row .body .pi b { color: var(--ink); font-weight: 600; }
.lab-row .go {
  font-size: .85rem; color: var(--brass-2); white-space: nowrap; display: inline-flex; gap: 6px;
}
html[dir="rtl"] .lab-row .go .arw { transform: scaleX(-1); }

/* ---------- chairman ---------- */
.chairman { background: var(--paper-2); }
.chairman .wrap { display: grid; grid-template-columns: 220px 1fr; gap: 48px; align-items: start; }
.chairman .portrait {
  width: 220px; height: 264px; object-fit: cover; border-radius: var(--radius);
  background: var(--ink); box-shadow: var(--shadow);
}
.chairman .portrait.placeholder {
  display: flex; align-items: center; justify-content: center;
  color: #6f8a8f; font-family: var(--serif); font-size: 3rem;
}
.chairman blockquote {
  margin: 0; font-family: var(--serif); font-size: 1.4rem; line-height: 1.5;
  color: var(--ink); position: relative; padding-inline-start: 26px;
  border-inline-start: 3px solid var(--brass);
}
.chairman .sig { margin-top: 22px; }
.chairman .sig b { display: block; font-family: var(--serif); font-size: 1.05rem; }
.chairman .sig span { font-size: .88rem; color: var(--slate); }

/* ---------- lab detail page ---------- */
.lab-hero { background: linear-gradient(180deg,#062a3d,#041d2b); color:#eef5f8; padding: 60px 0 54px; }
.lab-hero .wrap { display: grid; grid-template-columns: 150px 1fr; gap: 36px; align-items: center; }
.lab-hero .pi-photo {
  width: 150px; height: 150px; border-radius: 50%; object-fit: cover;
  border: 3px solid rgba(0,174,239,.7); background: #0a3d54;
}
.lab-hero .pi-photo.placeholder {
  display:flex; align-items:center; justify-content:center;
  font-family: var(--serif); font-size: 2.6rem; color:#7fa;
}
.lab-hero h1 { color:#fff; font-size: clamp(1.9rem,4vw,2.7rem); margin-bottom: 8px; }
.lab-hero .pi-line { color:#cdd8d6; }
.lab-hero .pi-line b { color:#fff; }
.back-link { color:#bcae87; font-size:.85rem; }

.lab-body { padding: 60px 0; }
.lab-grid { display:grid; grid-template-columns: 1fr 320px; gap: 56px; align-items:start; }
.block { margin-bottom: 44px; }
.block h2 { font-size: 1.4rem; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.block p { color: #33454a; }

.pi-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow);
}
.pi-card h3 { font-size: 1.1rem; }
.pi-card .t { font-size:.85rem; color: var(--brass-2); margin: 4px 0 12px; }
.pi-card p { font-size:.92rem; color:#3a4a4e; margin: 0; }

.tags { display:flex; flex-wrap:wrap; gap:8px; }
.tag {
  background: var(--paper-2); border:1px solid var(--line);
  padding: 6px 13px; border-radius: 999px; font-size:.84rem; color: var(--ink);
}
.members-list { list-style:none; padding:0; margin:0; }
.members-list li { padding: 12px 0; border-bottom:1px solid var(--line); display:flex; justify-content:space-between; gap:16px; }
.members-list li:last-child { border-bottom:none; }
.members-list .m-name { font-weight: 600; }
.members-list .m-role { color: var(--slate); font-size:.88rem; }

.pub { padding: 16px 0; border-bottom: 1px solid var(--line); }
.pub:last-child { border-bottom:none; }
.pub .p-title { font-family: var(--serif); font-size: 1.06rem; }
.pub .p-meta { font-size:.86rem; color: var(--slate); margin-top: 4px; }
.pub .p-meta em { font-style: italic; }

.proj { padding: 18px 0; border-bottom: 1px solid var(--line); }
.proj:last-child { border-bottom:none; }
.proj .p-head { display:flex; align-items:center; gap:10px; margin-bottom:6px; }
.proj .p-title { font-family: var(--serif); font-size:1.1rem; }
.badge { font-size:.72rem; letter-spacing:.05em; text-transform:uppercase; padding: 3px 9px; border-radius: 999px; font-weight:600; }
.badge.active { background:#e6f0e9; color: var(--ok); }
.badge.completed { background:#eceae2; color: var(--slate); }

.contact-card {
  background: var(--ink); color:#eef1ee; border-radius: var(--radius); padding: 22px;
}
.contact-card a { color:#fff; font-weight:600; }
.contact-card .lbl { font-size:.8rem; color:#9fb3b6; text-transform:uppercase; letter-spacing:.1em; }

/* ---------- footer ---------- */
.footer { background:#041d2b; color:#b8c8ce; padding: 48px 0 34px; margin-top: 40px; }
.footer .wrap { display:flex; justify-content:space-between; gap:24px; flex-wrap:wrap; }
.footer b { color:#fff; font-family: var(--serif); }
.footer a { color:#cfe; }
.footer .copy { border-top:1px solid rgba(255,255,255,.12); margin-top: 28px; padding-top: 18px; font-size:.82rem; color:#8ba0a3; }
.footer .disclaimer { margin: 0 0 10px; font-size:.8rem; color:#7c9298; max-width: 720px; }

/* ---------- flash ---------- */
.flash { padding: 12px 18px; border-radius: var(--radius); margin-bottom: 14px; font-size:.9rem; }
.flash.success { background:#e6f0e9; color: var(--ok); border:1px solid #bcd8c6; }
.flash.error { background:#f6e7e3; color: var(--danger); border:1px solid #e3c6bd; }

/* ---------- empty ---------- */
.empty { color: var(--slate); font-style: italic; }

/* ---------- forms & cards (auth pages) ---------- */
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow);
}
.field { margin-bottom: 16px; }
.field label { display: block; font-size: .86rem; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.field .hint { font-weight: 400; color: var(--slate); font-size: .8rem; }
.field input[type=text], .field input[type=email], .field input[type=password],
.field input[type=number], .field input[type=url], .field select, .field textarea {
  width: 100%; padding: 11px 13px; border: 1px solid var(--line-2); border-radius: var(--radius);
  font-family: var(--sans); font-size: .95rem; color: var(--ink); background: #fff;
}
.field textarea { min-height: 92px; resize: vertical; line-height: 1.5; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--ku-blue); box-shadow: 0 0 0 3px rgba(0,174,239,.15);
}
.checkbox { display: flex; align-items: center; gap: 8px; font-size: .9rem; }
.muted { color: var(--slate); font-size: .9rem; }

/* ---------- insights dashboard ---------- */
.ins-kpis {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px; margin-bottom: 24px;
}
.ins-kpi {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; text-align: center; box-shadow: var(--shadow);
  border-top: 3px solid var(--ku-blue);
}
.ins-kpi .num { font-family: var(--serif); font-size: 2.2rem; color: var(--ink); line-height: 1; }
.ins-kpi .lbl { font-size: .8rem; color: var(--slate); margin-top: 8px; }
.ins-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.chart-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 22px; box-shadow: var(--shadow);
}
.chart-card h3 { font-size: 1.05rem; margin-bottom: 14px; }
.chart-card.ins-wide { grid-column: 1 / -1; }
.chart-box { position: relative; height: 300px; }
@media (max-width: 780px) { .ins-grid { grid-template-columns: 1fr; } }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .stats .wrap { grid-template-columns: repeat(2,1fr); }
  .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .stat:nth-child(odd) { border-inline-start: none; }
  .chairman .wrap { grid-template-columns: 1fr; }
  .chairman .portrait { width: 180px; height: 216px; }
  .lab-grid { grid-template-columns: 1fr; }
  .lab-hero .wrap { grid-template-columns: 1fr; text-align: center; justify-items: center; }
  .lab-row { grid-template-columns: 40px 1fr; }
  .lab-row .go { grid-column: 2; }
}
@media (max-width: 560px) {
  .stats .wrap { grid-template-columns: 1fr 1fr; }
  .hero { padding: 60px 0 52px; }
}

/* ---------- mobile navigation (hamburger) ---------- */
.nav-toggle {
  display: none;
  margin-inline-start: auto;
  background: transparent; border: 1px solid var(--line-2); border-radius: var(--radius);
  color: var(--ink); padding: 6px 8px; cursor: pointer; line-height: 0;
}
.nav-toggle:hover { border-color: var(--ink); }

@media (max-width: 760px) {
  .nav-toggle { display: inline-flex; align-items: center; }
  .topbar .wrap { position: relative; }
  .nav {
    position: absolute; top: 100%; inset-inline: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    max-height: 0; overflow: hidden; padding: 0;
    transition: max-height .25s ease;
  }
  .nav.open { max-height: 420px; }
  .nav a {
    padding: 14px 24px; border-top: 1px solid var(--line);
    font-size: .98rem; color: var(--ink);
  }
  .nav a:first-child { border-top: none; }
  .nav .lang-toggle {
    border: none; border-radius: 0; padding: 14px 24px;
    border-top: 1px solid var(--line); text-align: start;
  }
  .nav .btn-signin {
    background: var(--ink); color: #fff; margin: 12px 24px; border-radius: var(--radius);
    text-align: center; padding: 12px;
  }
  .nav .btn-signin:hover { background: var(--ink-2); color: #fff; }
}