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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  line-height: var(--lh-normal);
  color: var(--color-charcoal);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, video, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
input, textarea, select { font: inherit; }

/* ─── Typography ─── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-snug);
  letter-spacing: var(--ls-tight);
  color: var(--color-charcoal);
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); }

p { margin-bottom: var(--space-4); }
p:last-child { margin-bottom: 0; }

.text-display {
  font-family: var(--font-display);
  font-size: var(--fs-hero);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
}

.text-overline {
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--color-gold);
}

.text-lead {
  font-size: var(--fs-body-lg);
  line-height: var(--lh-relaxed);
  color: var(--color-stone);
}

.text-muted { color: var(--color-stone); }
.text-gold  { color: var(--color-gold); }
.text-center { text-align: center; }

/* ─── Layout ─── */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-6);
}
.container--narrow { max-width: var(--container-md); }
.container--wide   { max-width: var(--container-2xl); }

.section {
  padding: var(--space-24) 0;
  position: relative;
}
.section--sm { padding: var(--space-16) 0; }
.section--lg { padding: var(--space-32) 0; }
.section--dark {
  background-color: var(--bg-dark);
  color: var(--color-ivory);
}
.section--dark h1, .section--dark h2, .section--dark h3, .section--dark h4 {
  color: var(--color-ivory);
}

/* ─── Grid ─── */
.grid { display: grid; gap: var(--space-8); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ─── Utilities ─── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); border: 0;
}
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }

/* ═══════════════════════════════════════════════════
   ANIMATIONS — Elegant & Refined
   ═══════════════════════════════════════════════════ */

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.97); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Gentle gold pulse */
@keyframes goldPulse {
  0%, 100% { box-shadow: 0 2px 15px rgba(184, 148, 62, 0.1); }
  50% { box-shadow: 0 4px 25px rgba(184, 148, 62, 0.2); }
}

/* Soft float */
@keyframes floatGentle {
  0%   { transform: translateY(0); }
  50%  { transform: translateY(-6px); }
  100% { transform: translateY(0); }
}

/* Typing cursor */
@keyframes blink {
  0%, 50% { border-color: var(--color-gold); }
  51%, 100% { border-color: transparent; }
}

/* Number glow */
@keyframes numberGlow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.85; }
}

/* Grid pulse */
@keyframes gridPulse {
  0%, 100% { opacity: 0.015; }
  50% { opacity: 0.035; }
}

.animate-fade-in-up { animation: fadeInUp var(--dur-slower) var(--ease-out) both; }
.animate-fade-in { animation: fadeIn var(--dur-slow) var(--ease-out) both; }
.animate-float { animation: floatGentle 5s ease-in-out infinite; }
.animate-delay-1 { animation-delay: 100ms; }
.animate-delay-2 { animation-delay: 200ms; }
.animate-delay-3 { animation-delay: 300ms; }
.animate-delay-4 { animation-delay: 400ms; }
.animate-delay-5 { animation-delay: 500ms; }

/* ─── Scroll animations ─── */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-slower) var(--ease-out), transform var(--dur-slower) var(--ease-out);
}
[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Skeleton loader ─── */
.skeleton {
  background: linear-gradient(90deg, rgba(0,0,0,0.03) 25%, rgba(0,0,0,0.06) 50%, rgba(0,0,0,0.03) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

/* ─── Subtle Grid Background (tech hint) ─── */
.tech-grid-bg {
  position: relative;
}
.tech-grid-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(184, 148, 62, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(184, 148, 62, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridPulse 6s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
}