/* ============================================================
   Global Styles — Reset, Base, Typography, Layout Utilities
   ============================================================ */

/* ─── Reset ──────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 12px);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--clr-text);
  background: var(--clr-bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background var(--t-slow), color var(--t-slow);
  /* Subtle fade-in every time a page loads */
  animation: pageFadeIn .45s ease both;
}

body[data-menu-open] { overflow: hidden; }

/* Page exit: fade out before navigating to the next page */
body.is-navigating {
  animation: pageFadeOut .26s ease forwards;
  pointer-events: none;
}

img, video, svg {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
  object-fit: cover;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: var(--leading-tight);
  color: var(--clr-dark);
  transition: color var(--t-slow);
}

[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
  color: var(--clr-text);
}

p { color: var(--clr-text-muted); }

/* ─── Layout Utilities ───────────────────────────────────── */
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--sp-8);
}

.container--sm {
  max-width: var(--container-sm);
}

.section {
  padding-block: var(--section-y);
}

.section--light  { background: var(--clr-bg); }
.section--white  { background: var(--clr-bg-card); }
.section--dark   { background: var(--clr-dark); color: #e2e8f0; }
.section--green  { background: var(--clr-primary); color: #fff; }

/* ─── Section Header ─────────────────────────────────────── */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--sp-16);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  background: var(--clr-primary-alpha);
  border: 1px solid var(--clr-primary-border);
  color: var(--clr-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--r-full);
  margin-bottom: var(--sp-5);
  letter-spacing: var(--tracking-wide);
}

.section-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--clr-primary);
  box-shadow: 0 0 0 3px var(--clr-primary-border);
  flex-shrink: 0;
}

.section-title {
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  font-weight: 800;
  margin-bottom: var(--sp-4);
  letter-spacing: -.02em;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--clr-text-muted);
  line-height: var(--leading-relaxed);
  max-width: 580px;
  margin: 0 auto;
}

.text-gradient {
  background: linear-gradient(120deg, var(--clr-primary), var(--clr-gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ─── Grid Utilities ─────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-6); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--sp-6); }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .container { padding-inline: var(--sp-5); }
  .section { padding-block: var(--sp-14); }
  .section-title { font-size: var(--text-2xl); }
  .section-header { margin-bottom: var(--sp-10); }
}

@media (max-width: 640px) {
  /* Push page content above the fixed bottom nav bar */
  body { padding-bottom: calc(58px + env(safe-area-inset-bottom, 0px)); }
}

@media (max-width: 480px) {
  .container { padding-inline: var(--sp-4); }
  .section { padding-block: var(--sp-10); }
  .section-title { font-size: clamp(var(--text-xl), 6vw, var(--text-2xl)); }
  .section-badge { font-size: 11px; padding: 5px 12px; }
}

/* ─── Visually Hidden (accessibility) ───────────────────── */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ─── Focus Styles ───────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--clr-primary);
  outline-offset: 3px;
  border-radius: 3px;
}