/* ===========================================================
   BEST — Design system
   Tokens, base elements, navbar, buttons, cards, footer, utilities.
   Uses CSS logical properties so a single stylesheet drives LTR + RTL.
   =========================================================== */

:root {
  /* Brand */
  --color-teal-50:  #ECF7F6;
  --color-teal-100: #D3EDEB;
  --color-teal-200: #A6DBD7;
  --color-teal-300: #6EC4BE;
  --color-teal-400: #38ABA4;
  --color-teal-500: #0E8C8C;   /* primary brand */
  --color-teal-600: #0A7374;
  --color-teal-700: #075A5B;
  --color-teal-800: #064446;
  --color-teal-900: #042E30;

  --color-mint:     #7FD8C7;   /* accent */
  --color-coral:    #F4815A;   /* spot accent */

  /* Neutrals */
  --color-ink:      #0B1F22;   /* near-black, warm */
  --color-ink-soft: #1E3438;
  --color-slate:    #4B5F63;
  --color-muted:    #7C8D90;
  --color-line:     #E6E0D7;
  --color-cream:    #F7F5F1;   /* warm off-white */
  --color-cream-2:  #FBFAF6;
  --color-white:    #FFFFFF;

  /* Typography */
  --font-display: 'Sora', 'Plus Jakarta Sans', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, monospace;

  /* Spacing scale (8pt) */
  --space-1: .25rem; --space-2: .5rem;  --space-3: .75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem;  --space-10: 2.5rem;
  --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 6px; --radius: 10px; --radius-md: 14px;
  --radius-lg: 20px; --radius-xl: 28px; --radius-full: 999px;

  /* Shadows — soft, layered */
  --shadow-xs: 0 1px 2px rgba(11,31,34,.04);
  --shadow-sm: 0 2px 6px rgba(11,31,34,.05), 0 1px 2px rgba(11,31,34,.03);
  --shadow-md: 0 10px 24px -8px rgba(11,31,34,.10), 0 4px 10px -2px rgba(11,31,34,.04);
  --shadow-lg: 0 24px 50px -12px rgba(11,31,34,.18), 0 8px 16px -8px rgba(11,31,34,.08);
  --shadow-teal: 0 18px 40px -12px rgba(14,140,140,.35);

  /* Motion */
  --ease-out: cubic-bezier(.16,.84,.24,1);
  --ease-in-out: cubic-bezier(.4,0,.2,1);
  --dur-fast: 150ms;
  --dur:      280ms;
  --dur-slow: 520ms;

  /* Layout */
  --container: 1200px;
  --container-narrow: 880px;
  --nav-h: 76px;
}

/* ===========================================================
   Reset & base
   =========================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-ink);
  background: var(--color-cream);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: color var(--dur) var(--ease-out); }
a:hover { color: var(--color-teal-600); }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
p { margin: 0 0 var(--space-4); }

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--color-ink);
  margin: 0 0 var(--space-4);
}
h1 { font-size: clamp(2.25rem, 4.5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; }

::selection { background: var(--color-teal-200); color: var(--color-ink); }

:focus-visible {
  outline: 2px solid var(--color-teal-500);
  outline-offset: 3px;
  border-radius: 4px;
}

/* RTL: keep punctuation flow correct */
[dir="rtl"] body { font-family: 'Tajawal', var(--font-body); }
[dir="rtl"] h1, [dir="rtl"] h2, [dir="rtl"] h3, [dir="rtl"] h4 {
  font-family: 'Tajawal', var(--font-display);
  letter-spacing: 0;
}

/* ===========================================================
   Layout
   =========================================================== */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

section { padding-block: var(--space-24); position: relative; }
section.tight { padding-block: var(--space-16); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 14px;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--color-teal-700);
  background: var(--color-teal-50);
  border: 1px solid var(--color-teal-100);
  border-radius: var(--radius-full);
}
.eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--color-teal-500);
  box-shadow: 0 0 0 4px rgba(14,140,140,.18);
}

.section-head { text-align: center; max-width: 720px; margin-inline: auto; margin-bottom: var(--space-16); }
.section-head .eyebrow { margin-bottom: var(--space-5); }
.section-head h2 { margin-bottom: var(--space-4); }
.section-head p { color: var(--color-slate); font-size: 1.0625rem; margin: 0; }

/* ===========================================================
   Buttons
   =========================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 14px 26px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: .95rem;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  transition: transform var(--dur) var(--ease-out),
              box-shadow var(--dur) var(--ease-out),
              background-color var(--dur) var(--ease-out),
              color var(--dur) var(--ease-out),
              border-color var(--dur) var(--ease-out);
  white-space: nowrap;
  text-decoration: none;
  line-height: 1;
}
.btn i, .btn svg { font-size: 1em; }

.btn-primary {
  background: var(--color-teal-500);
  color: var(--color-white);
  box-shadow: var(--shadow-teal);
}
.btn-primary:hover {
  background: var(--color-teal-600);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 22px 48px -14px rgba(14,140,140,.55);
}

.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-line);
}
.btn-ghost:hover {
  background: var(--color-white);
  color: var(--color-teal-700);
  border-color: var(--color-teal-200);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn-dark {
  background: var(--color-ink);
  color: var(--color-white);
}
.btn-dark:hover { background: var(--color-ink-soft); color: var(--color-white); transform: translateY(-2px); }

.btn-sm { padding: 10px 18px; font-size: .85rem; }
.btn-lg { padding: 16px 30px; font-size: 1rem; }

/* ===========================================================
   Navbar
   =========================================================== */
.nav {
  position: fixed; inset-block-start: 0; inset-inline: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center;
  background: rgba(247, 245, 241, .72);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-block-end: 1px solid transparent;
  transition: background var(--dur), border-color var(--dur), box-shadow var(--dur);
}
.nav.scrolled {
  background: rgba(255, 255, 255, .9);
  border-block-end-color: var(--color-line);
  box-shadow: 0 1px 0 rgba(11,31,34,.04);
}
.nav .container { display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); }
.nav-brand { display: inline-flex; align-items: center; gap: 10px; }
.nav-brand img { height: 38px; width: auto; }
.nav-menu { display: flex; align-items: center; gap: var(--space-2); }
.nav-menu a {
  position: relative;
  padding: 10px 14px;
  font-size: .92rem;
  font-weight: 500;
  color: var(--color-ink-soft);
  border-radius: var(--radius-full);
}
.nav-menu a:hover { color: var(--color-teal-700); background: rgba(14,140,140,.07); }
.nav-menu a.lang-pill {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--color-line);
  padding: 8px 14px;
  background: var(--color-white);
}
.nav-menu a.lang-pill:hover { border-color: var(--color-teal-300); color: var(--color-teal-700); }
.nav-cta { margin-inline-start: var(--space-2); }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border-radius: var(--radius-full);
  background: var(--color-white);
  border: 1px solid var(--color-line);
  align-items: center; justify-content: center;
  position: relative;
}
.nav-toggle span {
  position: absolute;
  inset-inline: 12px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
  transition: transform var(--dur) var(--ease-out), opacity var(--dur);
}
.nav-toggle span:nth-child(1) { top: 16px; }
.nav-toggle span:nth-child(2) { top: 22px; }
.nav-toggle span:nth-child(3) { top: 28px; }
.nav-toggle.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset-block-start: var(--nav-h);
  inset-inline: 0;
  background: var(--color-white);
  border-block-end: 1px solid var(--color-line);
  transform: translateY(-110%);
  transition: transform var(--dur) var(--ease-out);
  z-index: 99;
  padding: var(--space-6);
  box-shadow: var(--shadow-lg);
}
.mobile-menu.active { transform: translateY(0); }
.mobile-menu ul { display: flex; flex-direction: column; gap: var(--space-2); }
.mobile-menu a {
  display: block; padding: 14px 18px;
  border-radius: var(--radius);
  font-weight: 500; color: var(--color-ink-soft);
}
.mobile-menu a:hover { background: var(--color-teal-50); color: var(--color-teal-700); }

/* ===========================================================
   Footer
   =========================================================== */
.footer {
  background: var(--color-ink);
  color: rgba(255,255,255,.78);
  padding-block: var(--space-20) var(--space-8);
  margin-block-start: var(--space-24);
  position: relative;
  overflow: hidden;
}
.footer::before {
  content: '';
  position: absolute;
  inset-block-start: -120px; inset-inline-end: -100px;
  width: 420px; height: 420px;
  background: radial-gradient(closest-side, rgba(14,140,140,.45), transparent 70%);
  filter: blur(20px);
  pointer-events: none;
}
.footer .container { position: relative; z-index: 1; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-12);
  padding-block-end: var(--space-12);
  border-block-end: 1px solid rgba(255,255,255,.08);
}
.footer-brand h3 {
  color: var(--color-white);
  font-size: 1.5rem;
  margin-bottom: var(--space-3);
  letter-spacing: .08em;
}
.footer-brand p { color: rgba(255,255,255,.65); font-size: .95rem; max-width: 36ch; }
.footer-socials { display: flex; gap: var(--space-3); margin-block-start: var(--space-5); }
.footer-socials a {
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.85);
  border: 1px solid rgba(255,255,255,.08);
  transition: all var(--dur) var(--ease-out);
}
.footer-socials a:hover { background: var(--color-teal-500); color: var(--color-white); border-color: transparent; transform: translateY(-3px); }
.footer-col h4 {
  color: var(--color-white);
  font-size: .85rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-bottom: var(--space-5);
}
.footer-col ul { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-col a {
  color: rgba(255,255,255,.72);
  font-size: .95rem;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}
.footer-col a:hover { color: var(--color-white); }
.footer-col a i { color: var(--color-teal-300); width: 18px; text-align: center; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-block-start: var(--space-6);
  font-size: .85rem;
  color: rgba(255,255,255,.55);
}

/* ===========================================================
   Floating utility buttons (scroll-top, whatsapp)
   =========================================================== */
.fab {
  position: fixed;
  inset-block-end: 26px;
  inset-inline-end: 26px;
  width: 52px; height: 52px;
  border-radius: var(--radius-full);
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--color-white);
  color: var(--color-teal-600);
  border: 1px solid var(--color-line);
  box-shadow: var(--shadow-md);
  opacity: 0; pointer-events: none;
  transition: opacity var(--dur), transform var(--dur), background var(--dur);
  z-index: 90;
}
.fab.visible { opacity: 1; pointer-events: auto; }
.fab:hover { background: var(--color-teal-500); color: var(--color-white); transform: translateY(-3px); border-color: transparent; }
.fab.whatsapp {
  inset-block-end: 90px;
  background: #25D366;
  color: var(--color-white);
  border-color: transparent;
  opacity: 1; pointer-events: auto;
  box-shadow: 0 14px 28px -12px rgba(37,211,102,.6);
}
.fab.whatsapp:hover { background: #1ebd57; }

/* ===========================================================
   Generic card surface
   =========================================================== */
.surface {
  background: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out), border-color var(--dur);
}
.surface:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-teal-100);
}