/* ============================================================
   BASE — Reset, Typography, Global Styles
   ============================================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scrollbar-color: var(--color-gray-dark) var(--color-dark);
  scrollbar-width: thin;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Custom scrollbar (Webkit) */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--color-dark);
}
::-webkit-scrollbar-thumb {
  background: var(--color-gray-dark);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray);
}

/* Selection */
::selection {
  background: var(--color-accent);
  color: var(--color-black);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-editorial);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text);
  text-wrap: balance;
}

h1 { font-size: var(--text-hero); letter-spacing: 0.01em; }
h2 { font-size: var(--text-4xl); letter-spacing: 0.02em; }
h3 { font-size: var(--text-2xl); letter-spacing: 0.02em; }
h4 { font-size: var(--text-xl); letter-spacing: 0.03em; }

p {
  line-height: var(--leading-relaxed);
  color: var(--color-text-muted);
  text-wrap: pretty;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
  color: var(--color-accent);
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

/* Focus styles for accessibility */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ── Utility Classes ── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--section-pad-x);
}

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

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

.section {
  padding: var(--section-pad-y) 0;
  position: relative;
}

/* Section labels */
.section-label {
  font-family: var(--font-primary);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 1px;
  background: var(--color-accent);
}

/* Divider */
.divider {
  width: 100%;
  height: 1px;
  background: var(--color-border);
  border: none;
}

/* Screen reader only */
.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;
}

/* Text accents */
.text-accent {
  color: var(--color-accent);
}

.text-muted {
  color: var(--color-text-muted);
}

/* Reveal animation base class */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays */
.reveal[data-delay="1"] { transition-delay: 100ms; }
.reveal[data-delay="2"] { transition-delay: 200ms; }
.reveal[data-delay="3"] { transition-delay: 300ms; }
.reveal[data-delay="4"] { transition-delay: 400ms; }
.reveal[data-delay="5"] { transition-delay: 500ms; }
.reveal[data-delay="6"] { transition-delay: 600ms; }