/* =========================================================
   Durrat Al Asima Scientific Bureau — stylesheet
   Palette: deep emerald-navy ink, pearl ivory, muted gold
   ========================================================= */

:root{
  --ink:            #0a2622;
  --ink-2:          #0e352f;
  --emerald:        #0f4a41;
  --emerald-soft:   #135e51;
  --pearl:          #faf6ec;
  --pearl-2:        #f2ead8;
  --cream:          #fffaf0;
  --gold:           #c9a24a;
  --gold-light:     #e9c877;
  --gold-deep:      #9c7a2f;
  --text-dark:      #16241f;
  --text-muted:     #4d5f57;
  --text-on-dark:   #eef4ee;
  --text-on-dark-muted: #b9c8c2;
  --radius: 16px;
  --shadow-lg: 0 30px 60px -20px rgba(10,38,34,0.35);
  --shadow-sm: 0 10px 24px -12px rgba(10,38,34,0.25);
  --ff-display: 'El Messiri', 'Cormorant Garamond', serif;
  --ff-body: 'Tajawal', sans-serif;
  --ff-en: 'Cormorant Garamond', serif;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--ff-body);
  color: var(--text-dark);
  background: var(--pearl);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
ul{ list-style:none; margin:0; padding:0; }
h1,h2,h3{ font-family: var(--ff-display); margin:0; line-height:1.25; color: var(--text-dark); }
p{ margin:0; }

.container{
  width:100%;
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: 24px;
}

/* Grain overlay for texture */
.grain{
  position:fixed; inset:0; z-index: 999; pointer-events:none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding: 14px 30px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .35s cubic-bezier(.2,.8,.2,1), box-shadow .35s ease, background .3s ease, color .3s ease, border-color .3s ease;
  white-space: nowrap;
}
.btn-gold{
  background: linear-gradient(135deg, var(--gold-light), var(--gold) 55%, var(--gold-deep));
  color: #201703;
  box-shadow: var(--shadow-sm);
}
.btn-gold:hover{ transform: translateY(-3px); box-shadow: 0 18px 30px -10px rgba(156,122,47,0.55); }
.btn-outline{
  background: transparent;
  color: var(--text-on-dark);
  border-color: rgba(238,244,238,0.4);
}
.btn-outline:hover{ background: rgba(238,244,238,0.1); border-color: var(--gold-light); transform: translateY(-3px); }

/* ---------- Topbar ---------- */
.topbar{
  background: var(--ink);
  color: var(--text-on-dark-muted);
  font-size: 0.8rem;
}
.topbar-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding-block: 8px;
  gap: 12px;
}
.topbar-contact{ display:flex; align-items:center; gap: 14px; }
.topbar-link{ display:inline-flex; align-items:center; gap:6px; color: var(--text-on-dark-muted); transition: color .25s; }
.topbar-link:hover{ color: var(--gold-light); }
.topbar-sep{ width:1px; height:12px; background: rgba(238,244,238,0.2); }
.topbar-brand-en{ font-family: var(--ff-en); letter-spacing:.06em; font-style: italic; font-size: 0.85rem; color: var(--gold-light); opacity:.85; }

/* ---------- Header ---------- */
.site-header{
  position: sticky; top:0; z-index: 200;
  background: rgba(250,246,236,0.85);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid rgba(10,38,34,0.08);
  transition: box-shadow .3s ease;
}
.header-inner{
  display:flex; align-items:center; gap: 28px;
  padding-block: 14px;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand-mark{ flex:none; display:flex; }
.brand-text{ display:flex; flex-direction:column; line-height:1.15; }
.brand-ar{ font-family: var(--ff-display); font-weight:600; font-size:1.05rem; color: var(--ink); }
.brand-ar em{ font-style:normal; color: var(--gold-deep); }
.brand-en{ font-family: var(--ff-en); font-size:0.68rem; letter-spacing:.18em; color: var(--text-muted); }

.main-nav{ display:flex; align-items:center; gap: 30px; margin-inline-start: 10px; }
.main-nav a{
  position:relative; font-weight:500; font-size:0.95rem; color: var(--text-dark); padding-block:6px;
}
.main-nav a::after{
  content:''; position:absolute; inset-inline:0; bottom:0; height:2px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  transform: scaleX(0); transform-origin: right;
  transition: transform .35s ease;
}
.main-nav a:hover::after{ transform: scaleX(1); }

.header-cta{ margin-inline-start:auto; padding:11px 26px; font-size:0.88rem; }
.nav-toggle{ display:none; }

/* ---------- Hero ---------- */
.hero{
  position: relative;
  min-height: 92vh;
  display:flex; align-items:center;
  background: radial-gradient(120% 130% at 80% 0%, #123f37 0%, var(--ink-2) 45%, var(--ink) 100%);
  color: var(--text-on-dark);
  overflow:hidden;
  padding-block: 90px 60px;
}
.hero-bg{ position:absolute; inset:0; z-index:0; }
.hero-glow{
  position:absolute; top:-10%; left:50%; transform: translateX(-50%);
  width: 900px; height: 900px; border-radius:50%;
  background: radial-gradient(circle, rgba(233,200,119,0.16), transparent 65%);
  filter: blur(10px);
}
.hero-molecule{
  position:absolute; inset: -6% -10% -10% -10%; width:120%; height:120%;
  animation: driftRotate 90s linear infinite;
}
@keyframes driftRotate{ from{ transform: rotate(0deg);} to{ transform: rotate(360deg);} }

.hero-inner{ position:relative; z-index:1; text-align:center; }
.eyebrow{
  font-family: var(--ff-en); font-style: italic; letter-spacing:.2em; font-size:0.95rem;
  color: var(--gold-light); margin-bottom: 18px; text-transform: uppercase;
}
.hero h1{ font-size: clamp(2.6rem, 6vw, 5rem); font-weight:600; }
.hero-line{ display:block; }
.hero-line-accent{ color: var(--gold-light); }
.hero-sub{
  max-width: 680px; margin: 26px auto 0; font-size: 1.1rem; line-height:1.9;
  color: var(--text-on-dark-muted);
}
.hero-actions{ display:flex; align-items:center; justify-content:center; gap:16px; margin-top: 38px; flex-wrap: wrap; }

.hero-stats{
  display:flex; justify-content:center; gap: clamp(20px,5vw,64px);
  margin-top: 64px; flex-wrap:wrap;
  border-top: 1px solid rgba(238,244,238,0.14);
  padding-top: 36px;
}
.hstat{ display:flex; flex-direction:column; align-items:center; gap:4px; }
.hstat-num{ font-family: var(--ff-display); font-size:2.1rem; color: var(--gold-light); font-weight:600; }
.hstat-label{ font-size:0.85rem; color: var(--text-on-dark-muted); }

.hero-scroll{
  position:absolute; bottom: 26px; left:50%; transform: translateX(-50%);
  width:26px; height:42px; border:1.5px solid rgba(238,244,238,0.4); border-radius:14px;
}
.hero-scroll span{
  position:absolute; top:8px; left:50%; transform: translateX(-50%);
  width:4px; height:8px; border-radius:2px; background: var(--gold-light);
  animation: scrollDot 1.8s ease-in-out infinite;
}
@keyframes scrollDot{ 0%{ opacity:1; top:8px;} 70%{opacity:0; top:22px;} 100%{opacity:0; top:8px;} }

/* ---------- Sections generic ---------- */
.section{ padding-block: 110px; }
.kicker{
  font-family: var(--ff-en); font-style: italic; letter-spacing:.16em; text-transform:uppercase;
  color: var(--gold-deep); font-size:0.95rem; margin-bottom:12px;
}
.kicker.gold{ color: var(--gold-light); }
.center{ text-align:center; }
h2{ font-size: clamp(1.8rem, 3.4vw, 2.6rem); }
h2.light{ color: var(--text-on-dark); }
.section-sub{
  max-width: 620px; margin: 16px auto 0; color: var(--text-muted); font-size:1.05rem; line-height:1.85;
}
.section-sub.light{ color: var(--text-on-dark-muted); }

/* ---------- About ---------- */
.about-grid{
  display:grid; grid-template-columns: 0.85fr 1.15fr; gap: 72px; align-items:center;
}
.about-visual{ position:relative; }
.about-svg{ width:100%; height:auto; filter: drop-shadow(var(--shadow-lg)); }
.about-badge{
  position:absolute; bottom: 6%; right: -6%;
  background: var(--pearl); border: 1px solid rgba(201,162,74,0.4);
  border-radius: var(--radius); padding: 16px 22px;
  box-shadow: var(--shadow-sm);
  display:flex; flex-direction:column; align-items:center; text-align:center; gap:2px;
  min-width: 130px;
}
.about-badge-num{ font-family: var(--ff-display); color: var(--gold-deep); font-size:1.6rem; font-weight:700; }
.about-badge-txt{ font-size:0.78rem; color: var(--text-muted); }

.about-copy h2{ margin-top:6px; margin-bottom: 22px; }
.lead{ font-size:1.1rem; line-height:1.95; color: var(--text-dark); margin-bottom:16px; }
.about-copy p:not(.lead):not(.kicker){ color: var(--text-muted); line-height:1.95; margin-bottom: 12px; }

.pillars{ margin-top: 30px; display:grid; gap:18px; }
.pillar{ display:flex; gap:16px; align-items:flex-start; }
.pillar-icon{ color: var(--gold); font-size:1.1rem; margin-top:4px; }
.pillar h3{ font-size:1.1rem; margin-bottom:4px; }
.pillar p{ color: var(--text-muted); font-size:0.95rem; line-height:1.8; }

/* ---------- Services ---------- */
.services{ background: linear-gradient(180deg, var(--pearl), var(--pearl-2)); }
.cards-grid{
  margin-top: 56px;
  display:grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.service-card{
  background: var(--cream);
  border: 1px solid rgba(10,38,34,0.06);
  border-radius: var(--radius);
  padding: 34px 28px;
  transition: transform .4s cubic-bezier(.2,.8,.2,1), box-shadow .4s ease, border-color .4s ease;
}
.service-card:hover{
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(201,162,74,0.4);
}
.service-icon{
  width:56px; height:56px; border-radius:14px;
  display:flex; align-items:center; justify-content:center;
  background: linear-gradient(135deg, var(--emerald), var(--ink-2));
  color: var(--gold-light);
  margin-bottom: 22px;
}
.service-icon svg{ width:28px; height:28px; }
.service-card h3{ font-size:1.2rem; margin-bottom:10px; }
.service-card p{ color: var(--text-muted); font-size:0.95rem; line-height:1.85; }

/* ---------- Quality band ---------- */
.quality-band{
  position:relative;
  background: linear-gradient(160deg, var(--ink-2), var(--emerald) 60%, var(--ink-2));
  color: var(--text-on-dark);
  padding-block: 110px;
  overflow:hidden;
}
.quality-bg{
  position:absolute; inset:0;
  background:
    radial-gradient(circle at 15% 20%, rgba(233,200,119,0.12), transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(233,200,119,0.10), transparent 45%);
}
.quality-grid{
  position:relative; z-index:1;
  margin-top: 56px;
  display:grid; grid-template-columns: repeat(4, 1fr); gap: 28px;
}
.quality-item{
  border-top: 1px solid rgba(233,200,119,0.35);
  padding-top: 20px;
}
.qnum{ font-family: var(--ff-en); font-style:italic; color: var(--gold-light); font-size:1.6rem; }
.quality-item h3{ color: var(--text-on-dark); font-size:1.1rem; margin: 10px 0 8px; }
.quality-item p{ color: var(--text-on-dark-muted); font-size:0.92rem; line-height:1.8; }

/* ---------- Partners ---------- */
.partners-grid{
  margin-top: 50px;
  display:grid; grid-template-columns: repeat(6, 1fr); gap: 18px;
}
.partner-slot{
  aspect-ratio: 3/2;
  border: 1px dashed rgba(10,38,34,0.2);
  border-radius: 12px;
  display:flex; align-items:center; justify-content:center;
  color: rgba(10,38,34,0.35);
  font-family: var(--ff-en); letter-spacing:.1em; font-size:0.8rem;
  background: var(--cream);
}
.partners-note{ text-align:center; margin-top:22px; color: var(--text-muted); font-size:0.85rem; }

/* ---------- Contact ---------- */
.contact{ background: var(--pearl); }
.contact-grid{
  display:grid; grid-template-columns: 0.9fr 1.1fr; gap: 64px;
}
.contact-info .kicker{ margin-bottom:8px; }
.contact-info h2{ margin-bottom:16px; }
.contact-info .lead{ margin-bottom: 34px; }
.contact-list{ display:grid; gap: 22px; margin-bottom: 34px; }
.contact-list li{ display:flex; gap:16px; align-items:flex-start; }
.ci-icon{
  flex:none; width:42px; height:42px; border-radius:12px;
  background: linear-gradient(135deg, var(--emerald), var(--ink-2));
  color: var(--gold-light);
  display:flex; align-items:center; justify-content:center;
}
.contact-list strong{ display:block; font-size:0.85rem; color: var(--text-muted); margin-bottom:2px; font-weight:500; }
.contact-list a, .contact-list span{ font-weight:600; color: var(--text-dark); }
.contact-list a:hover{ color: var(--gold-deep); }

.social-row{ display:flex; gap:12px; }
.social-btn{
  width:42px; height:42px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  background: var(--ink-2); color: var(--gold-light);
  transition: transform .3s ease, background .3s ease;
}
.social-btn:hover{ transform: translateY(-4px); background: var(--emerald); }

.contact-form{
  background: var(--cream);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(10,38,34,0.06);
  display:grid; gap: 20px; align-content:start;
}
.form-row{ display:grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field{ display:grid; gap: 8px; }
.field label{ font-size:0.85rem; font-weight:600; color: var(--text-muted); }
.field input, .field textarea{
  font-family: var(--ff-body);
  border: 1px solid rgba(10,38,34,0.15);
  border-radius: 10px;
  padding: 13px 16px;
  font-size: 0.95rem;
  background: #fff;
  color: var(--text-dark);
  resize: vertical;
  transition: border-color .25s, box-shadow .25s;
}
.field input:focus, .field textarea:focus{
  outline:none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(201,162,74,0.18);
}
.form-submit{ margin-top:6px; }
.form-note{ font-size:0.85rem; color: var(--emerald-soft); min-height: 1em; }

.map-wrap{
  margin-top: 80px; border-radius: var(--radius); overflow:hidden;
  box-shadow: var(--shadow-lg); max-width:1240px; margin-inline:auto;
  border: 1px solid rgba(10,38,34,0.08);
}
.map-wrap iframe{ width:100%; height: 380px; border:0; filter: grayscale(0.15) contrast(1.05); }

/* ---------- Footer ---------- */
.site-footer{ background: var(--ink); color: var(--text-on-dark-muted); }
.footer-grid{
  display:grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 50px;
  padding-block: 70px 40px;
}
.footer-brand p{ margin-top: 16px; font-size:0.92rem; line-height:1.85; max-width: 320px; }
.footer-brand .brand-ar{ color: var(--text-on-dark); }
.footer-brand .brand-en{ color: var(--gold-light); opacity:0.8; }
.footer-links, .footer-contact{ display:flex; flex-direction:column; gap: 14px; }
.footer-links h4, .footer-contact h4{
  color: var(--text-on-dark); font-family: var(--ff-display); font-weight:600; margin-bottom: 6px; font-size:1.05rem;
}
.footer-links a, .footer-contact a{ font-size:0.92rem; transition: color .25s; }
.footer-links a:hover, .footer-contact a:hover{ color: var(--gold-light); }
.footer-contact p{ font-size:0.92rem; }

.footer-bottom{ border-top: 1px solid rgba(238,244,238,0.1); }
.footer-bottom-inner{
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:8px;
  padding-block: 20px; font-size:0.82rem;
}
.footer-en{ font-family: var(--ff-en); font-style:italic; letter-spacing:.05em; color: var(--gold-light); opacity:.7; }

/* ---------- WhatsApp float ---------- */
.whatsapp-float{
  position: fixed; bottom: 26px; left: 26px; z-index: 300;
  width:58px; height:58px; border-radius:50%;
  background: linear-gradient(135deg,#25d366,#1da851);
  color:#fff; display:flex; align-items:center; justify-content:center;
  box-shadow: 0 14px 30px -8px rgba(37,211,102,0.55);
  animation: floatPulse 3s ease-in-out infinite;
}
@keyframes floatPulse{ 0%,100%{ transform: translateY(0);} 50%{ transform: translateY(-6px);} }

/* ---------- Reveal-on-scroll ---------- */
[data-reveal]{
  opacity:0; transform: translateY(26px);
  transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1);
}
[data-reveal].is-visible{ opacity:1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 980px){
  .about-grid, .contact-grid{ grid-template-columns: 1fr; }
  .cards-grid{ grid-template-columns: repeat(2,1fr); }
  .quality-grid{ grid-template-columns: repeat(2,1fr); }
  .partners-grid{ grid-template-columns: repeat(3,1fr); }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .about-badge{ right: 4%; }
}

@media (max-width: 760px){
  .topbar-brand-en{ display:none; }
  .main-nav{
    position: fixed; inset-inline:0; top: 0; height:100vh;
    background: var(--ink); flex-direction:column; justify-content:center; gap: 34px;
    transform: translateX(100%); transition: transform .45s cubic-bezier(.2,.8,.2,1);
    z-index: 250;
  }
  .main-nav.is-open{ transform: translateX(0); }
  .main-nav a{ color: var(--text-on-dark); font-size:1.3rem; font-family: var(--ff-display); }
  .header-cta{ display:none; }
  .nav-toggle{
    display:flex; flex-direction:column; gap:5px; width:32px; z-index:260;
    background:none; border:none; cursor:pointer; padding: 6px;
  }
  .nav-toggle span{ height:2px; background: var(--ink); border-radius:2px; transition: transform .3s, opacity .3s; }
  .nav-toggle.is-active span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
  .nav-toggle.is-active span:nth-child(2){ opacity:0; }
  .nav-toggle.is-active span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

  .cards-grid{ grid-template-columns: 1fr; }
  .quality-grid{ grid-template-columns: 1fr 1fr; }
  .partners-grid{ grid-template-columns: repeat(2,1fr); }
  .form-row{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; text-align:center; }
  .footer-brand p{ margin-inline:auto; }
  .contact-list li{ text-align:right; }
  .hero-stats{ gap: 26px; }
}