/* ============================================================
   GILI 2026 — Global Stylesheet
   https://gili.unram.ac.id
   ============================================================ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;600;700;800&family=Nunito:wght@400;500;600;700&display=swap');

/* ── CSS Variables ── */
:root {
  /* Colors */
  --color-primary-dark:  #0a2342;
  --color-primary-teal:  #00b4d8;
  --color-accent-green:  #2ec4b6;
  --color-accent-yellow: #ffd166;
  --color-bg:            #f0f4f8;
  --color-white:         #ffffff;
  --color-text:          #1a2e44;
  --color-text-muted:    #5a7184;
  --color-border:        #d1dce8;

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, rgba(10,35,66,0.88) 0%, rgba(0,180,216,0.72) 100%);
  --gradient-card: linear-gradient(135deg, #0a2342 0%, #00b4d8 100%);

  /* Typography */
  --font-heading: 'Sora', sans-serif;
  --font-body:    'Nunito', sans-serif;

  --fs-xs:   0.75rem;   /* 12px */
  --fs-sm:   0.875rem;  /* 14px */
  --fs-base: 1rem;      /* 16px */
  --fs-md:   1.125rem;  /* 18px */
  --fs-lg:   1.25rem;   /* 20px */
  --fs-xl:   1.5rem;    /* 24px */
  --fs-2xl:  2rem;      /* 32px */
  --fs-3xl:  2.5rem;    /* 40px */
  --fs-4xl:  3rem;      /* 48px */

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border radius */
  --radius-sm:   0.375rem;
  --radius-md:   0.75rem;
  --radius-lg:   1rem;
  --radius-xl:   1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(10,35,66,0.08), 0 1px 2px rgba(10,35,66,0.06);
  --shadow-md:  0 4px 16px rgba(10,35,66,0.10), 0 2px 6px rgba(10,35,66,0.08);
  --shadow-lg:  0 10px 40px rgba(10,35,66,0.14), 0 4px 12px rgba(10,35,66,0.10);
  --shadow-xl:  0 20px 60px rgba(10,35,66,0.18);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;

  /* Layout */
  --container-max: 1200px;
  --navbar-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary-teal);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: var(--font-body);
}

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-primary-dark);
}

h1 { font-size: var(--fs-4xl); }
h2 { font-size: var(--fs-3xl); }
h3 { font-size: var(--fs-2xl); }
h4 { font-size: var(--fs-xl); }
h5 { font-size: var(--fs-lg); }
h6 { font-size: var(--fs-md); }

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

/* ── Layout Utilities ── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.section {
  padding-block: var(--space-20);
}

.section-sm {
  padding-block: var(--space-12);
}

.section-title {
  font-size: var(--fs-3xl);
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--color-primary-dark);
  text-align: center;
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--fs-md);
  color: var(--color-text-muted);
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: var(--space-12);
}

.section-label {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 700;
  font-family: var(--font-heading);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary-teal);
  margin-bottom: var(--space-3);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary-teal);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(0,180,216,0.35);
}

.btn-primary:hover {
  background: var(--color-accent-green);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(46,196,182,0.40);
}

.btn-secondary {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255,255,255,0.7);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.15);
  color: var(--color-white);
  border-color: var(--color-white);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary-teal);
  border: 2px solid var(--color-primary-teal);
}

.btn-outline:hover {
  background: var(--color-primary-teal);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-accent {
  background: var(--color-accent-yellow);
  color: var(--color-primary-dark);
  box-shadow: 0 4px 14px rgba(255,209,102,0.40);
}

.btn-accent:hover {
  background: #f5c842;
  color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,209,102,0.50);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--fs-base);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-xs);
}

/* ── Cards ── */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-body {
  padding: var(--space-6);
}

/* ── Badge ── */
.badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: 700;
  font-family: var(--font-heading);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.badge-teal {
  background: rgba(0,180,216,0.12);
  color: var(--color-primary-teal);
}

.badge-green {
  background: rgba(46,196,182,0.12);
  color: var(--color-accent-green);
}

.badge-yellow {
  background: rgba(255,209,102,0.20);
  color: #b8860b;
}

/* ── Divider ── */
.divider {
  width: 60px;
  height: 4px;
  background: var(--gradient-card);
  border-radius: var(--radius-full);
  margin: var(--space-4) auto var(--space-6);
}

.divider-left {
  margin-left: 0;
}

/* ── Grid helpers ── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }

/* ── Flex helpers ── */
.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    { display: flex; flex-direction: column; }
.gap-2  { gap: var(--space-2); }
.gap-4  { gap: var(--space-4); }
.gap-6  { gap: var(--space-6); }
.gap-8  { gap: var(--space-8); }

/* ── Text utilities ── */
.text-center  { text-align: center; }
.text-white   { color: var(--color-white); }
.text-muted   { color: var(--color-text-muted); }
.text-teal    { color: var(--color-primary-teal); }
.text-yellow  { color: var(--color-accent-yellow); }
.font-heading { font-family: var(--font-heading); }
.font-bold    { font-weight: 700; }

/* ── Scroll animation ── */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

.fade-in-delay-1 { transition-delay: 100ms; }
.fade-in-delay-2 { transition-delay: 200ms; }
.fade-in-delay-3 { transition-delay: 300ms; }
.fade-in-delay-4 { transition-delay: 400ms; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  :root {
    --fs-4xl: 2.5rem;
    --fs-3xl: 2rem;
  }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --fs-4xl: 2rem;
    --fs-3xl: 1.75rem;
    --fs-2xl: 1.5rem;
  }
  .container { padding-inline: var(--space-4); }
  .section   { padding-block: var(--space-12); }
  .grid-2,
  .grid-3,
  .grid-4 { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  :root {
    --fs-4xl: 1.75rem;
    --fs-3xl: 1.5rem;
  }
}