/* ===========================================
   GLOBAL CSS — Variables, Reset, Typography,
   Utilities, Layout
   =========================================== */

/* --- CSS Variables --- */
:root {
  /* Brand Colors */
  --color-teal:       #14B8A6;
  --color-teal-light: #5EEAD4;
  --color-teal-dark:  #0f766e;
  --color-navy:       #0F172A;
  --color-navy-mid:   #1E293B;
  --color-navy-light: #334155;
  --color-white:      #FFFFFF;
  --color-off-white:  #F8FAFC;
  --color-gray-100:   #F1F5F9;
  --color-gray-200:   #E2E8F0;
  --color-gray-400:   #94A3B8;
  --color-gray-600:   #475569;
  --color-gray-800:   #1E293B;
  --color-text:       #0F172A;
  --color-text-muted: #64748B;

  /* Gradients */
  --gradient-teal: linear-gradient(135deg, var(--color-teal-dark), var(--color-teal));
  --gradient-navy: linear-gradient(135deg, var(--color-navy), var(--color-navy-mid));
  --gradient-hero: linear-gradient(135deg, #071a12 0%, #0d2b1e 50%, #0f3828 100%);

  /* Typography */
  --font-sans:    'DM Sans', sans-serif;
  --font-serif:   'Playfair Display', serif;
  --font-body:    'Inter', sans-serif;

  /* Font Sizes */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border Radius */
  --radius-sm:  0.375rem;
  --radius-md:  0.75rem;
  --radius-lg:  1rem;
  --radius-xl:  1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.12);
  --shadow-xl:  0 16px 48px rgba(0,0,0,0.16);
  --shadow-teal:    0 4px 20px rgba(14,139,127,0.25);
  --shadow-teal-sm: 0 2px 8px  rgba(14,139,127,0.18), 0 1px 3px rgba(0,0,0,0.06);
  --shadow-teal-md: 0 4px 18px rgba(14,139,127,0.22), 0 2px 6px rgba(0,0,0,0.08);
  --shadow-teal-lg: 0 8px 32px rgba(14,139,127,0.26), 0 4px 12px rgba(0,0,0,0.10);

  /* Glass System */
  --glass-bg:        rgba(255,255,255,0.55);
  --glass-bg-dark:   rgba(255,255,255,0.08);
  --glass-border:    rgba(255,255,255,0.32);
  --glass-blur:      blur(24px) saturate(180%);
  --glass-highlight: inset 0 1px 0 rgba(255,255,255,0.85);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.22s ease;
  --transition-slow: 0.38s ease;

  /* Layout */
  --container-max: 1200px;
  --section-py:    var(--space-20);
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input, textarea, select { font: inherit; }

/* --- Typography --- */
h1, h2, h3, h4, h5 {
  font-family: var(--font-serif);
  line-height: 1.25;
  color: var(--color-navy);
}
h1 { font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl)); }
h2 { font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl)); }
h3 { font-size: clamp(var(--text-xl),  3vw, var(--text-2xl)); }
h4 { font-size: var(--text-xl); }
p  { color: var(--color-text-muted); line-height: 1.75; }

/* --- Layout --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.section { padding: var(--section-py) 0; }
.section-sm { padding: var(--space-12) 0; }

/* --- Section Labels & Headings --- */
.section-label {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-teal-dark);
  background: rgba(14,139,127,0.10);
  border: 1px solid rgba(14,139,127,0.22);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}
.section-heading {
  margin-bottom: var(--space-4);
  color: var(--color-navy);
}
.section-sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 640px;
  margin-bottom: var(--space-12);
}
.text-center { text-align: center; }
.text-center .section-sub { margin-left: auto; margin-right: auto; }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.75rem 1.75rem;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
  cursor: pointer;
}
.btn-primary {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-teal-dark) 0%, var(--color-teal) 100%);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(14,139,127,.22), 0 1px 3px rgba(14,139,127,.14);
  transition: transform var(--transition-base), box-shadow var(--transition-base), filter var(--transition-base);
}
.btn-primary::after {
  content: "";
  position: absolute;
  top: -50%; left: -120%;
  width: 50%; height: 200%;
  background: linear-gradient(105deg, transparent 35%, rgba(255,255,255,.30) 50%, transparent 65%);
  transform: skewX(-20deg);
  pointer-events: none;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(14,139,127,.32), 0 2px 6px rgba(14,139,127,.18);
  filter: brightness(1.04);
}
.btn-primary:hover::after { animation: fx-shine .55s ease forwards; }
.btn-primary:active { transform: translateY(0); filter: brightness(0.98); }
.btn-outline {
  border: 1.5px solid rgba(14,139,127,.55);
  color: var(--color-teal-dark);
  background: rgba(14,139,127,.06);
  transition: all var(--transition-base);
}
.btn-outline:hover {
  background: var(--color-teal);
  border-color: var(--color-teal);
  color: var(--color-white);
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 6px 20px rgba(14,139,127,.38);
}
.btn-white {
  background: rgba(255,255,255,.92);
  color: var(--color-teal-dark);
  box-shadow: 0 4px 14px rgba(0,0,0,.10), 0 1px 3px rgba(0,0,0,.06);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.60);
  transition: all var(--transition-base);
}
.btn-white:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 8px 24px rgba(14,139,127,.24), 0 2px 8px rgba(0,0,0,.08);
  background: #fff;
}
.btn-lg { padding: 1rem 2.25rem; font-size: var(--text-base); }
.btn-sm { padding: 0.5rem 1.25rem; font-size: var(--text-xs); }

/* --- Badges / Tags --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
}
.badge-teal   { background: rgba(14,139,127,0.12); color: var(--color-teal-dark); }
.badge-navy   { background: rgba(15,23,42,0.08);   color: var(--color-navy); }
.badge-white  { background: rgba(255,255,255,0.15); color: var(--color-white); border: 1px solid rgba(255,255,255,0.3); }

/* --- Grid Utilities --- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-8); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-8); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-8); }

/* --- Flex Utilities --- */
.flex        { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between{ display: flex; align-items: center; justify-content: space-between; }
.gap-4  { gap: var(--space-4); }
.gap-6  { gap: var(--space-6); }
.gap-8  { gap: var(--space-8); }

/* --- Visibility --- */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }

/* --- Divider --- */
.divider { height: 1px; background: var(--color-gray-200); margin: var(--space-8) 0; }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  :root { --section-py: var(--space-16); }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .container { padding: 0 var(--space-4); }
}

.section-alt { background: var(--color-off-white); }