/* ═══════════════════════════════════════════════════
   ATLAS PRO ONTV — Base / Reset / Typography
   ═══════════════════════════════════════════════════ */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: 5rem;
}

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

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

img {
  height: auto;
}

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

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

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

ul, ol {
  list-style: none;
}

/* ── Typography ──────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--fw-bold);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-heading);
  color: var(--color-text);
}

h1 { font-size: var(--fs-h1); font-weight: var(--fw-black); }
h2 { font-size: var(--fs-h2); font-weight: var(--fw-extrabold); }
h3 { font-size: var(--fs-h3); font-weight: var(--fw-bold); }
h4 { font-size: var(--fs-h4); font-weight: var(--fw-bold); }

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
}

strong {
  font-weight: var(--fw-semibold);
  color: var(--color-text);
}

/* ── Selection ───────────────────────────────────── */
::selection {
  background: rgba(59, 130, 246, 0.18);
  color: var(--color-text);
}

/* ── Scrollbar ───────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg-section-alt);
}
::-webkit-scrollbar-thumb {
  background: rgba(59, 130, 246, 0.3);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(59, 130, 246, 0.5);
}

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

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

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

.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-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

/* ── Sections ────────────────────────────────────── */
.section {
  padding-block: var(--space-section);
}

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

.section--dark {
  background: var(--gradient-hero);
  color: var(--color-text-white);
}

.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--color-text-white);
}

.section--dark p {
  color: var(--color-text-white-muted);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: var(--space-3xl);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.15);
  color: var(--color-primary);
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}

.section-badge svg {
  width: 0.9rem;
  height: 0.9rem;
}

.section--dark .section-badge {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.25);
  color: var(--color-primary-light);
}

.section-title {
  margin-bottom: var(--space-md);
}

.section-title span {
  color: var(--color-primary);
}

.section-description {
  font-size: var(--fs-body-lg);
  color: var(--color-text-muted);
  max-width: 600px;
  margin-inline: auto;
}

.section--dark .section-description {
  color: var(--color-text-white-muted);
}

/* ── Fade-in Animation ───────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

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

/* Stagger children */
.fade-in-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}

.fade-in-stagger.is-visible > *:nth-child(1) { transition-delay: 0.05s; opacity: 1; transform: translateY(0); }
.fade-in-stagger.is-visible > *:nth-child(2) { transition-delay: 0.10s; opacity: 1; transform: translateY(0); }
.fade-in-stagger.is-visible > *:nth-child(3) { transition-delay: 0.15s; opacity: 1; transform: translateY(0); }
.fade-in-stagger.is-visible > *:nth-child(4) { transition-delay: 0.20s; opacity: 1; transform: translateY(0); }
.fade-in-stagger.is-visible > *:nth-child(5) { transition-delay: 0.25s; opacity: 1; transform: translateY(0); }
.fade-in-stagger.is-visible > *:nth-child(6) { transition-delay: 0.30s; opacity: 1; transform: translateY(0); }