/* =================================================================
   MASTER.CSS — Tema MaSa / Majelis Seniman Aceh
   -----------------------------------------------------------------
   Berisi fondasi visual tema:
     1. CSS Variables  (warna, tipografi, spacing, transisi, layout)
     2. CSS Reset / Normalize
     3. Base Elements  (html, body, heading, link, img, list)
     4. Tipografi      (skala heading, helper class teks)
     5. Grid System    (.container, .section, .grid-*, .flex-*)
     6. Utility Classes (.label, .divider, .btn-*, .reveal, dll)
     7. Animasi Global (keyframes yang dipakai di seluruh tema)
   ================================================================= */


/* =================================================================
   1. CSS CUSTOM PROPERTIES (Variables)
   ================================================================= */

:root {

  /* ── Palet Warna Utama ──────────────────────────────────────── */
  --color-ink:         #0a0906;          /* latar gelap utama      */
  --color-parchment:   #f7f2e8;          /* teks & latar terang    */
  --color-gold:        #e0a830;          /* aksen emas (primer)    */
  --color-gold-light:  #f5c842;          /* amber terang           */
  --color-gold-glow:   rgba(224,168,48,0.25); /* bayangan emas     */

  /* ── Palet Warna Sekunder ──────────────────────────────────── */
  --color-rust:        #c04a2e;          /* terrakota / merah bata */
  --color-teal:        #2a7a6e;          /* hijau zamrud           */
  --color-indigo:      #3d3480;          /* indigo gelap           */
  --color-sage:        #4a6e52;          /* hijau sage             */

  /* ── Skala Latar Gelap ─────────────────────────────────────── */
  --color-ash:         #1e1c18;          /* section gelap          */
  --color-mid:         #2c2820;          /* section pertengahan    */
  --color-cream:       #faf7f0;          /* latar terang (light mode) */

  /* ── Teks & Elemen UI ──────────────────────────────────────── */
  --color-mist:        #d4ccb8;          /* teks sekunder          */

  /* ── Font Families ─────────────────────────────────────────── */
  --font-display:  'Cormorant Garamond', 'Garamond', Georgia, serif;
  --font-body:     'Jost', 'Gill Sans', sans-serif;
  --font-accent:   'Cinzel', 'Trajan Pro', serif;
  --font-mono:     'Courier New', monospace;

  /* ── Skala Spacing ─────────────────────────────────────────── */
  --space-xs:  0.5rem;   /*  8px */
  --space-sm:  1rem;     /* 16px */
  --space-md:  2rem;     /* 32px */
  --space-lg:  4rem;     /* 64px */
  --space-xl:  8rem;     /* 128px */

  /* ── Transisi & Easing ─────────────────────────────────────── */
  --ease-out:       cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out:    cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast:  180ms;
  --duration-med:   380ms;
  --duration-slow:  700ms;

  /* ── Layout ────────────────────────────────────────────────── */
  --max-width:      1400px;
  --content-width:  780px;
  --header-height:  80px;
}


/* =================================================================
   2. CSS RESET / NORMALIZE
   ================================================================= */

/* Box model universal */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Scroll halus & antialiasing */
html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Elemen media */
img,
video,
svg {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Tabel */
table { border-collapse: collapse; }

/* Form */
button,
input,
select,
textarea {
  font: inherit;
}

/* Hapus default list style */
ul,
ol {
  list-style: none;
}


/* =================================================================
   3. BASE ELEMENTS
   ================================================================= */

/* ── Body ──────────────────────────────────────────────────────── */
body {
  font-family: var(--font-body);
  background-color: var(--color-ink);
  color: var(--color-parchment);
  line-height: 1.7;
  overflow-x: hidden;
}

/* Varian halaman terang (tambahkan class .light-page pada <body>) */
body.light-page {
  background-color: var(--color-cream);
  color: var(--color-ash);
}

/* ── Link ──────────────────────────────────────────────────────── */
a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
}

/* ── Paragraf ──────────────────────────────────────────────────── */
p {
  max-width: 65ch;
}

/* ── Tabel ─────────────────────────────────────────────────────── */
table {
  width: 100%;
  font-size: 0.9rem;
}

th {
  font-family: var(--font-accent);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold);
  padding: var(--space-sm);
  border-bottom: 1px solid rgba(201,168,76,0.2);
  text-align: left;
}

td {
  padding: var(--space-sm);
  border-bottom: 1px solid rgba(245,240,232,0.06);
  color: var(--color-mist);
}

/* ── Kode ──────────────────────────────────────────────────────── */
code,
pre {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--color-ash);
  color: var(--color-gold-light);
}

code {
  padding: 2px 6px;
  border-radius: 2px;
}

pre {
  padding: var(--space-md);
  overflow-x: auto;
  white-space: pre;
}

/* ── HR ────────────────────────────────────────────────────────── */
hr {
  border: none;
  border-top: 1px solid rgba(201,168,76,0.2);
  margin: var(--space-md) 0;
}


/* =================================================================
   4. TIPOGRAFI
   ================================================================= */

/* ── Heading Skala ─────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem,   4.5vw, 4rem);  }
h2 { font-size: clamp(1.6rem, 3vw,   2.8rem); }
h3 { font-size: clamp(1.2rem, 2vw,   1.7rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.9rem; }

/* ── Helper Tipografi ──────────────────────────────────────────── */

/* Label kecil bergaya Cinzel — dipakai di atas judul seksi */
.label {
  font-family: var(--font-accent);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-gold);
}

/* Teks serif miring bergaya editorial */
.serif-italic {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
}

/* Accent heading — garis emas di atas judul */
.accent-heading::before {
  content: '';
  display: block;
  width: 40px;
  height: 2px;
  background: var(--color-gold);
  margin-bottom: var(--space-sm);
}

/* Ornament dekoratif */
.ornament {
  color: var(--color-gold);
  font-family: var(--font-display);
  font-size: 2rem;
  opacity: 0.4;
}


/* =================================================================
   5. GRID SYSTEM & LAYOUT
   ================================================================= */

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

/* ── Section Wrapper ───────────────────────────────────────────── */
.section        { padding: var(--space-xl) 0; }
.section--tight { padding: var(--space-lg) 0; }

/* ── Grid Kolom ────────────────────────────────────────────────── */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
}

/* ── Flexbox 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; }

/* ── Alignment Helpers ─────────────────────────────────────────── */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-left   { text-align: left; }


/* =================================================================
   6. UTILITY CLASSES
   ================================================================= */

/* ── Divider (garis emas) ──────────────────────────────────────── */
.divider {
  width: 60px;
  height: 1px;
  background: var(--color-gold);
  margin: var(--space-md) 0;
}

.divider--center { margin: var(--space-md) auto; }
.divider--rust   { background: var(--color-rust); }

/* ── Tombol (Buttons) ──────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 36px;
  font-family: var(--font-body);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--duration-med) var(--ease-out);
  border: none;
  text-decoration: none;
}

/* Tombol utama — background emas */
.btn--primary {
  background: var(--color-gold);
  color: var(--color-ink);
}

.btn--primary:hover {
  background: var(--color-gold-light);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(201,168,76,0.3);
}

/* Tombol outline — border transparan */
.btn--outline {
  background: transparent;
  color: var(--color-parchment);
  border: 1px solid rgba(245,240,232,0.3);
}

.btn--outline:hover {
  border-color: var(--color-parchment);
  background: rgba(245,240,232,0.05);
}

/* Tombol ghost — hanya teks + garis bawah */
.btn--ghost {
  background: transparent;
  color: var(--color-gold);
  padding: 0;
  letter-spacing: 0.2em;
  position: relative;
  border: none;
}

.btn--ghost::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--color-gold);
  transform: scaleX(0.4);
  transform-origin: left;
  transition: transform var(--duration-med) var(--ease-out);
}

.btn--ghost:hover::after { transform: scaleX(1); }

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

/* ── Spacing Helpers ───────────────────────────────────────────── */
.mt-sm { margin-top:    var(--space-sm); }
.mt-md { margin-top:    var(--space-md); }
.mt-lg { margin-top:    var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }


/* =================================================================
   7. ANIMASI GLOBAL
   ================================================================= */

/* Fade + slide dari bawah */
@keyframes fade-in {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Fade overlay masuk */
@keyframes overlay-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Hero parallax lambat */
@keyframes hero-parallax {
  from { transform: scale(1.05) translateY(0); }
  to   { transform: scale(1.05) translateY(-3%); }
}

/* Scroll indicator */
@keyframes scroll-line {
  0%   { transform: scaleY(0); transform-origin: top;    opacity: 1; }
  50%  { transform: scaleY(1); transform-origin: top;    opacity: 1; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0.3; }
}

/* Trigger class untuk animate-in */
.animate-in {
  animation: fade-in 0.8s var(--ease-out) both;
}

/* ── Scroll Reveal (Intersection Observer) ─────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out),
              transform 0.8s var(--ease-out);
}

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

/* Delay stagger untuk kartu berurutan */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }