/* ═══════════════════════════════════════════════════════
   shared.css — MedBridge Cambodia Design System
   Single source of truth for tokens, nav, footer,
   buttons, utilities, animations, and mobile menu.
   ═══════════════════════════════════════════════════════ */

/* ── DESIGN TOKENS ── */
:root {
  --teal-50:#EFFEFB; --teal-100:#C8FFF5; --teal-200:#91FEEB; --teal-300:#53F0DB;
  --teal-400:#1DD5C4; --teal-500:#0EB5A8; --teal-600:#089189; --teal-700:#0B746F; --teal-800:#0E5C59;
  --amber-50:#FFFBEB; --amber-100:#FEF3C7; --amber-200:#FDE68A; --amber-300:#FCD34D;
  --amber-400:#FBBF24; --amber-500:#F59E0B; --amber-600:#D97706;
  --coral-50:#FFF5F0; --coral-100:#FFEDD5; --coral-400:#FB923C; --coral-500:#F97316; --coral-600:#EA580C;
  --green-50:#F0FDF4; --green-100:#DCFCE7; --green-500:#22C55E; --green-600:#16A34A; --green-700:#15803D;
  --slate-50:#F8FAFC; --slate-100:#F1F5F9; --slate-200:#E2E8F0; --slate-300:#CBD5E1;
  --slate-400:#94A3B8; --slate-500:#64748B; --slate-600:#475569; --slate-700:#334155;
  --slate-800:#1E293B; --slate-900:#0F172A;
  --serif:'Libre Baskerville',Georgia,serif;
  --sans:'DM Sans',-apple-system,BlinkMacSystemFont,sans-serif;
  --nav-h:72px;
  --section-px:clamp(20px,5vw,80px);
  --max-w:1200px;
  --radius:16px; --radius-sm:10px; --radius-lg:24px; --radius-full:9999px;
  --shadow-xs:0 1px 2px rgba(15,23,42,.04);
  --shadow-sm:0 2px 8px rgba(15,23,42,.06);
  --shadow-md:0 4px 20px rgba(15,23,42,.08);
  --shadow-lg:0 12px 40px rgba(15,23,42,.1);
  --shadow-teal:0 8px 32px rgba(14,181,168,.2);
  --shadow-amber:0 8px 32px rgba(245,158,11,.2);
  --shadow-coral:0 8px 24px rgba(249,115,22,.25);
}

/* ── RESET ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{font-family:var(--sans);background:#fff;color:var(--slate-700);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--slate-100)}
::-webkit-scrollbar-thumb{background:var(--teal-500);border-radius:3px}

/* ── LAYOUT ── */
.container{max-width:var(--max-w);margin:0 auto;padding:0 var(--section-px)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* ── TYPOGRAPHY UTILITIES ── */
.section-label{
  font-family:var(--sans);font-size:12px;font-weight:700;
  letter-spacing:3px;text-transform:uppercase;
  display:inline-flex;align-items:center;gap:10px;margin-bottom:14px;
}
.section-label--teal{color:var(--teal-600)}
.section-label--amber{color:var(--amber-600)}
.section-label--coral{color:var(--coral-500)}
.section-label--white{color:rgba(255,255,255,.7)}
.label-dot{width:8px;height:8px;border-radius:50%;display:inline-block}
.label-dot--teal{background:var(--teal-400)}
.label-dot--amber{background:var(--amber-400)}
.label-dot--coral{background:var(--coral-400)}

.section-title{font-family:var(--serif);font-size:clamp(30px,4vw,48px);font-weight:700;line-height:1.2;color:var(--slate-800)}
.section-title em{font-style:italic;font-weight:400}
.section-title--white{color:#fff}
.section-title--white em{color:var(--teal-300)}
.highlight-teal{color:var(--teal-600)}
.highlight-amber{color:var(--amber-600)}
.highlight-coral{color:var(--coral-500)}

.section-lead{font-size:17px;font-weight:400;color:var(--slate-500);line-height:1.75;max-width:600px;margin-top:14px}
.section-lead--white{color:rgba(255,255,255,.55)}

/* ── ANIMATIONS ── */
@keyframes pulse-dot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.8)}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeSlideRight{from{opacity:0;transform:translateX(-16px)}to{opacity:1;transform:translateX(0)}}
@keyframes confetti-pop{0%{transform:scale(0) rotate(0deg);opacity:0}50%{transform:scale(1.2) rotate(180deg);opacity:1}100%{transform:scale(1) rotate(360deg);opacity:1}}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .65s cubic-bezier(.22,1,.36,1),transform .65s cubic-bezier(.22,1,.36,1)}
.reveal.visible{opacity:1;transform:translateY(0)}

/* Dot texture — reusable background */
.bg-dots{
  position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle,var(--teal-200) 1px,transparent 1px);
  background-size:32px 32px;opacity:.3;
}
.bg-dots--dark{
  background-image:radial-gradient(circle,rgba(14,181,168,.15) 1px,transparent 1px);
  background-size:40px 40px;opacity:1;
}
.bg-dots--white{
  background-image:radial-gradient(circle,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:28px 28px;opacity:1;
}
.bg-dots--coral{
  background-image:radial-gradient(circle,var(--coral-400) 1px,transparent 1px);
  background-size:40px 40px;opacity:.08;
}

/* ── BUTTONS ── */
.btn{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--sans);
  font-size:14px;font-weight:600;letter-spacing:.3px;
  padding:14px 28px;border-radius:var(--radius-sm);border:none;cursor:pointer;
  transition:transform .2s,box-shadow .25s;
}
.btn:hover{transform:translateY(-2px)}
.btn--teal{background:linear-gradient(135deg,var(--teal-500),var(--teal-600));color:#fff}
.btn--teal:hover{box-shadow:var(--shadow-teal)}
.btn--amber{background:linear-gradient(135deg,var(--amber-400),var(--amber-500));color:var(--slate-900)}
.btn--amber:hover{box-shadow:var(--shadow-amber)}
.btn--coral{background:linear-gradient(135deg,var(--coral-500),var(--coral-600));color:#fff}
.btn--coral:hover{box-shadow:var(--shadow-coral)}
.btn--white{background:#fff;color:var(--teal-700)}.btn--white:hover{box-shadow:var(--shadow-lg)}
.btn--outline{background:transparent;border:2px solid var(--slate-200);color:var(--slate-700)}
.btn--outline:hover{border-color:var(--teal-500);color:var(--teal-600)}
.btn--outline-white{background:transparent;border:2px solid rgba(255,255,255,.2);color:rgba(255,255,255,.8)}
.btn--outline-white:hover{border-color:var(--teal-300);color:var(--teal-300)}
.btn--pill{border-radius:var(--radius-full)}
.btn--sm{font-size:13px;padding:10px 20px}

/* ══════════════════════════════════
   NAVIGATION — unified across all pages
   ══════════════════════════════════ */
.site-nav{
  position:fixed;top:0;left:0;right:0;height:var(--nav-h);
  background:rgba(255,255,255,.92);backdrop-filter:blur(20px) saturate(1.5);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 var(--section-px);z-index:1000;
  border-bottom:1px solid rgba(0,0,0,.06);
}
.nav-brand{display:flex;align-items:center}
.nav-logo-img{height:200px;width:auto;display:block}

.nav-links{display:flex;align-items:center;gap:28px;list-style:none}
.nav-links a{font-size:13px;font-weight:500;color:var(--slate-500);transition:color .2s;position:relative}
.nav-links a:hover{color:var(--teal-600)}
/* Active page link */
.nav-links a[aria-current="page"]{color:var(--teal-600);font-weight:600}
.nav-links a[aria-current="page"]::after{
  content:'';position:absolute;bottom:-6px;left:0;right:0;
  height:2px;background:var(--teal-500);border-radius:1px;
}
/* Webinar highlight in nav */
.nav-links .nav-link--webinars{color:var(--coral-500);font-weight:600}
.nav-links .nav-link--webinars:hover{color:var(--coral-600)}
.nav-links .nav-link--webinars[aria-current="page"]::after{background:var(--coral-500)}
/* Hospital link secondary style */
.nav-links .nav-link--hospitals{color:var(--slate-400);font-size:12px}
.nav-links .nav-link--hospitals:hover{color:var(--teal-500)}
.nav-links .nav-link--hospitals[aria-current="page"]{color:var(--teal-600);font-size:13px}
.nav-links .nav-link--hospitals[aria-current="page"]::after{background:var(--teal-500)}

/* Nav CTA variants */
.nav-cta{
  font-size:13px;font-weight:600;color:#fff !important;
  background:linear-gradient(135deg,var(--teal-500),var(--teal-600));
  padding:9px 20px;border-radius:var(--radius-sm);
  transition:box-shadow .2s,transform .2s;
}
.nav-cta:hover{box-shadow:var(--shadow-teal);transform:translateY(-1px)}
.nav-cta::after{display:none !important}
.nav-cta--amber{background:linear-gradient(135deg,var(--amber-400),var(--amber-500));color:var(--slate-900) !important}
.nav-cta--amber:hover{box-shadow:var(--shadow-amber)}
.nav-cta--coral{background:linear-gradient(135deg,var(--coral-500),var(--coral-600))}
.nav-cta--coral:hover{box-shadow:var(--shadow-coral)}

/* Mobile toggle */
.nav-mobile-toggle{
  display:none;background:none;border:none;cursor:pointer;
  width:28px;height:20px;position:relative;
}
.nav-mobile-toggle span{
  display:block;width:100%;height:2px;background:var(--slate-600);
  border-radius:1px;position:absolute;left:0;transition:.3s;
}
.nav-mobile-toggle span:nth-child(1){top:0}
.nav-mobile-toggle span:nth-child(2){top:9px}
.nav-mobile-toggle span:nth-child(3){top:18px}
/* Animated X state */
.nav-mobile-toggle.is-open span:nth-child(1){top:9px;transform:rotate(45deg)}
.nav-mobile-toggle.is-open span:nth-child(2){opacity:0}
.nav-mobile-toggle.is-open span:nth-child(3){top:9px;transform:rotate(-45deg)}

/* ══════════════════════════════════
   MOBILE MENU — unified
   ══════════════════════════════════ */
.mobile-menu{
  position:fixed;top:var(--nav-h);left:0;right:0;
  background:#fff;padding:0 var(--section-px);
  box-shadow:var(--shadow-lg);
  z-index:999;border-bottom:2px solid var(--teal-400);
  max-height:0;overflow:hidden;
  transition:max-height .35s cubic-bezier(.22,1,.36,1),padding .35s;
}
.mobile-menu.is-open{
  max-height:500px;
  padding:16px var(--section-px) 24px;
}
.mm-link{
  display:block;font-size:15px;font-weight:500;color:var(--slate-600);
  padding:12px 0;border-bottom:1px solid var(--slate-100);transition:color .2s;
}
.mm-link:hover{color:var(--teal-600)}
.mm-link[aria-current="page"]{color:var(--teal-600);font-weight:700}
.mm-link--accent{color:var(--coral-500) !important;font-weight:600}
.mm-link--accent[aria-current="page"]{color:var(--coral-600) !important}
.mm-cta{
  display:block;text-align:center;margin-top:12px;
  font-size:14px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,var(--teal-500),var(--teal-600));
  padding:14px;border-radius:var(--radius-sm);
}
.mm-cta--amber{background:linear-gradient(135deg,var(--amber-400),var(--amber-500));color:var(--slate-900)}
.mm-cta--coral{background:linear-gradient(135deg,var(--coral-500),var(--coral-600))}

/* ══════════════════════════════════
   FOOTER — unified across all pages
   ══════════════════════════════════ */
.site-footer{background:var(--slate-900);padding:64px 0 0;border-top:1px solid rgba(255,255,255,.06)}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;
  max-width:var(--max-w);margin:0 auto;padding:0 var(--section-px);
}
.footer-brand-desc{font-size:13.5px;color:rgba(255,255,255,.3);line-height:1.7;margin-top:16px;max-width:280px}
.footer-col-title{font-size:11px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:rgba(255,255,255,.5);margin-bottom:18px}
.footer-links{list-style:none}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:13.5px;color:rgba(255,255,255,.3);transition:color .2s}
.footer-links a:hover{color:var(--teal-400)}

.footer-bottom{
  max-width:var(--max-w);margin:48px auto 0;padding:20px var(--section-px);
  border-top:1px solid rgba(255,255,255,.06);
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
}
.footer-copy{font-size:12px;color:rgba(255,255,255,.2)}
.footer-langs{display:flex;gap:6px}
.footer-lang-btn{
  font-size:11px;font-weight:600;padding:4px 10px;border-radius:4px;
  border:1px solid rgba(255,255,255,.1);background:transparent;
  color:rgba(255,255,255,.25);cursor:pointer;transition:all .2s;
}
.footer-lang-btn.active{background:rgba(14,181,168,.2);border-color:rgba(14,181,168,.3);color:var(--teal-400)}
.footer-lang-btn:hover{border-color:rgba(255,255,255,.3);color:rgba(255,255,255,.5)}
.footer-disclaimer{
  max-width:var(--max-w);margin:0 auto;padding:16px var(--section-px) 24px;
  font-size:11px;color:rgba(255,255,255,.12);line-height:1.6;
}

/* ══════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════ */
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-links{display:none}
  .nav-mobile-toggle{display:block}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:12px}
}

/* ══════════════════════════════════
   FORM COMPONENTS — shared across all pages
   ══════════════════════════════════ */
.w3-form-group{display:flex;flex-direction:column;gap:5px}
.w3-label{font-size:12px;font-weight:600;color:var(--slate-500);text-transform:uppercase;letter-spacing:.5px}
.w3-input,.w3-select,.w3-textarea{
  border:1.5px solid var(--slate-200);border-radius:var(--radius-sm);
  padding:11px 14px;font-family:var(--sans);font-size:14px;color:var(--slate-800);
  outline:none;transition:border-color .2s;background:#fff;width:100%;
}
.w3-input:focus,.w3-select:focus,.w3-textarea:focus{border-color:var(--teal-400)}
.w3-input::placeholder,.w3-textarea::placeholder{color:var(--slate-300)}
.w3-select{appearance:none;cursor:pointer}
.w3-textarea{resize:vertical;min-height:80px}
.w3-submit{
  width:100%;font-family:var(--sans);font-size:14px;font-weight:600;
  background:linear-gradient(135deg,var(--teal-500),var(--teal-600));
  color:#fff;border:none;border-radius:var(--radius-sm);padding:14px;
  cursor:pointer;transition:box-shadow .2s,transform .2s;
}
.w3-submit:hover{box-shadow:0 8px 32px rgba(14,181,168,.2);transform:translateY(-1px)}
.w3-submit:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}
.w3-submit--amber{background:linear-gradient(135deg,var(--amber-400),var(--amber-500));color:var(--slate-900)}
.w3-submit--amber:hover{box-shadow:0 8px 32px rgba(245,158,11,.2)}
.w3-submit--coral{background:linear-gradient(135deg,var(--coral-500),var(--coral-600))}
.w3-submit--coral:hover{box-shadow:0 8px 24px rgba(249,115,22,.25)}

.form-success{
  display:none;margin-top:12px;padding:14px 18px;
  background:var(--green-50);border:1px solid var(--green-500);
  border-radius:var(--radius-sm);font-size:14px;color:var(--green-600);
}
.form-error{
  display:none;margin-top:12px;padding:14px 18px;
  background:#FEF2F2;border:1px solid #DC2626;
  border-radius:var(--radius-sm);font-size:14px;color:#DC2626;
}

/* Dark form variant (for dark backgrounds) */
.w3-input--dark,.w3-select--dark,.w3-textarea--dark{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  color:#fff;
}
.w3-input--dark::placeholder,.w3-textarea--dark::placeholder{color:rgba(255,255,255,.25)}
.w3-input--dark:focus,.w3-select--dark:focus,.w3-textarea--dark:focus{border-color:var(--teal-400)}
.w3-select--dark option{background:var(--slate-800);color:#fff}
.w3-label--dark{color:rgba(255,255,255,.5)}

/* Image utilities */
.img-cover{width:100%;height:100%;object-fit:cover}
.img-rounded{border-radius:var(--radius-lg)}

/* Avatar placeholders */
.avatar{
  width:80px;height:80px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:28px;font-weight:700;color:#fff;
}