/* ============================================================
   Akademika Semesta Nusantara — Global Styles
   ============================================================ */

/* ── Layout ── */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

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

/* ── Typography ── */
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--c-text);
  background: var(--c-bg);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: 1.15;
  font-weight: 700;
  color: var(--c-text);
}

h1 { font-size: var(--text-7xl); }
h2 { font-size: var(--text-5xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  color: var(--c-text-muted);
  line-height: 1.8;
  max-width: 70ch;
}

.text-gradient {
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-primary);
  margin-bottom: var(--space-4);
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--c-primary);
}

.section-title {
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--c-text-muted);
  max-width: 60ch;
  line-height: 1.7;
}

.text-center { text-align: center; }
.text-center .section-subtitle { margin-inline: auto; }

/* ── Section Spacing ── */
.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: var(--c-bg-dark);
  color: var(--c-text-on-dark);
}
.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--c-text-on-dark);
}
.section--dark p,
.section--dark .section-subtitle {
  color: var(--c-gray-400);
}
.section--dark .section-label {
  color: var(--c-accent);
}
.section--dark .section-label::before {
  background: var(--c-accent);
}
.section--alt {
  background: var(--c-bg-alt);
}

/* ── Accessibility ── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--c-primary);
  color: var(--c-white);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius);
  z-index: var(--z-toast);
  font-weight: 600;
  font-size: var(--text-sm);
  transition: top var(--t);
}

.skip-link:focus {
  top: 1rem;
}

*:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
}

/* ── Scroll Reveal Animations ── */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-reveal="left"] {
  transform: translateX(-40px);
}

[data-reveal="right"] {
  transform: translateX(40px);
}

[data-reveal="scale"] {
  transform: scale(0.92);
}

[data-reveal="fade"] {
  transform: none;
}

[data-reveal].visible {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
}

/* Stagger children */
[data-reveal-stagger] > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-reveal-stagger].visible > * {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal-stagger].visible > *:nth-child(1) { transition-delay: 0ms; }
[data-reveal-stagger].visible > *:nth-child(2) { transition-delay: 100ms; }
[data-reveal-stagger].visible > *:nth-child(3) { transition-delay: 200ms; }
[data-reveal-stagger].visible > *:nth-child(4) { transition-delay: 300ms; }
[data-reveal-stagger].visible > *:nth-child(5) { transition-delay: 400ms; }
[data-reveal-stagger].visible > *:nth-child(6) { transition-delay: 500ms; }

/* ── Magnetic Cursor Effect Area ── */
.magnetic {
  transition: transform var(--t-spring);
}

/* ── Custom Scrollbar ── */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--c-gray-100);
}
::-webkit-scrollbar-thumb {
  background: var(--c-primary-200);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--c-primary);
}

/* ── 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;
  }
  [data-reveal],
  [data-reveal-stagger] > * {
    opacity: 1;
    transform: none;
  }
}

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

.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-2,
  .grid-3,
  .grid-4 { grid-template-columns: 1fr; }
}