/* ─── BASE RESET + GLOBALS ────────────────────────────────────────────────── */

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

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color 0.25s ease, color 0.25s ease;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul[role='list'], ol[role='list'] { list-style: none; }

input, button, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4, h5, h6 {
  text-wrap: balance;
  line-height: 1.12;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
}

p, li, figcaption {
  text-wrap: pretty;
  max-width: 68ch;
}

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

button { cursor: pointer; background: none; border: none; }

::selection {
  background: oklch(from var(--color-primary) l c h / 0.2);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@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;
  }
}

/* ─── LAYOUT UTILITIES ────────────────────────────────────────────────────── */

.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
}

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

.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}

.section--tight {
  padding-block: clamp(var(--space-10), 5vw, var(--space-20));
}

/* ─── TYPOGRAPHY UTILITIES ────────────────────────────────────────────────── */

.eyebrow {
  font-size: var(--text-xs);
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 60ch;
}

/* ─── BUTTON SYSTEM ───────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.75rem 1.75rem;
  font-size: var(--text-sm);
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--radius-md);
  transition: background var(--transition-interactive), color var(--transition-interactive), box-shadow var(--transition-interactive), transform var(--transition-interactive);
  white-space: nowrap;
  text-decoration: none;
}

.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 8px oklch(from var(--color-primary) l c h / 0.3);
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  box-shadow: 0 4px 16px oklch(from var(--color-primary) l c h / 0.35);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}
.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-highlight);
}

.btn--outline-white {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.4);
}
.btn--outline-white:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
}

/* ─── DIVIDERS ────────────────────────────────────────────────────────────── */

.divider {
  height: 1px;
  background: var(--color-divider);
  border: none;
}

/* ─── CARDS ───────────────────────────────────────────────────────────────── */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: box-shadow var(--transition-interactive), transform var(--transition-interactive);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* ─── DARK MODE TOGGLE ────────────────────────────────────────────────────── */

.theme-toggle {
  width: 2.25rem;
  height: 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition-interactive), background var(--transition-interactive);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}