/*
Theme Name:  Tutur Bangsa
Theme URI:   https://tuturbangsa.id
Author:      Tutur Bangsa Team
Description: Custom theme untuk platform literasi TuturBangsa.id — artikel, podcast, buku, dan program kelas menulis.
Version:     1.0.0
Requires at least: 6.4
Tested up to: 6.7
Requires PHP: 8.1
License:     Proprietary
Text Domain: tuturbangsa
Tags:        editorial, literary, custom-theme
*/

/* ============================================================
   DESIGN TOKENS — semua nilai visual terpusat di sini
   ============================================================ */
:root {

  /* Warna utama */
  --color-black:      #0D0D0D;
  --color-dark:       #1A1A1A;
  --color-dark-2:     #252525;
  --color-ink:        #2E2E2E;
  --color-gray-700:   #4A4A4A;
  --color-gray-600:   #5A5A5A;
  --color-gray-500:   #717171;
  --color-gray-400:   #9A9A9A;
  --color-gray-300:   #C4C4C4;
  --color-gray-200:   #E0E0E0;
  --color-gray-100:   #F0F0F0;
  --color-gray-50:    #F8F8F8;
  --color-white:      #FFFFFF;

  /* Warna brand */
  --color-primary:       #B22222;
  --color-primary-dark:  #8B1A1A;
  --color-primary-light: #FDF5F5;
  --color-accent:        #B22222;
  --color-accent-light:  #FDF5F5;

  /* Tipografi — self-hosted via assets/css/fonts.css */
  --font-serif:       'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans:        'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
  --font-mono:        'JetBrains Mono', 'Courier New', monospace;

  /* Alias sesuai .agents/scripts/fonts.css */
  --font-heading:     var(--font-serif);
  --font-body:        var(--font-sans);

  /* Ukuran font — skala modular 1.25 */
  --text-xs:    0.75rem;    /* 12px */
  --text-sm:    0.875rem;   /* 14px */
  --text-base:  1rem;       /* 16px */
  --text-md:    1.125rem;   /* 18px */
  --text-lg:    1.25rem;    /* 20px */
  --text-xl:    1.5rem;     /* 24px */
  --text-2xl:   1.875rem;   /* 30px */
  --text-3xl:   2.25rem;    /* 36px */
  --text-4xl:   3rem;       /* 48px */
  --text-5xl:   3.75rem;    /* 60px */
  --text-6xl:   4.5rem;     /* 72px */

  /* Line height */
  --leading-tight:  1.15;
  --leading-snug:   1.35;
  --leading-normal: 1.6;
  --leading-relaxed:1.8;
  --leading-loose:  2;

  /* 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;
  --space-32:  8rem;

  /* Border radius */
  --radius-sm:  3px;
  --radius:     6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-full: 9999px;

  /* Shadow */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
  --shadow:     0 4px 16px rgba(0,0,0,0.08);
  --shadow-md:  0 8px 32px rgba(0,0,0,0.10);
  --shadow-lg:  0 16px 48px rgba(0,0,0,0.12);
  --shadow-xl:  0 24px 64px rgba(0,0,0,0.16);

  /* Border */
  --border-light:  1px solid var(--color-gray-200);
  --border:        1px solid var(--color-gray-300);
  --border-dark:   1.5px solid var(--color-dark);

  /* Layout */
  --container-sm:   640px;
  --container-md:   768px;
  --container-lg:   1024px;
  --container-xl:   1200px;
  --container-2xl:  1440px;

  /* Sidebar */
  --sidebar-width:  320px;

  /* Header */
  --header-height:      64px;
  --topbar-height:      36px;

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

  /* Z-index */
  --z-dropdown:  100;
  --z-sticky:    200;
  --z-fixed:     300;
  --z-overlay:   400;
  --z-modal:     500;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-ink);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

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

/* ============================================================
   TIPOGRAFI
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--color-dark);
}

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

p {
  line-height: var(--leading-relaxed);
  color: var(--color-gray-700);
}

strong, b {
  font-weight: 700;
  color: var(--color-dark);
}

em, i {
  font-style: italic;
}

small {
  font-size: var(--text-sm);
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

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

.container--wide {
  max-width: var(--container-2xl);
}

/* ============================================================
   KOMPONEN: TOMBOL
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1;
  transition: all var(--transition);
  white-space: nowrap;
  cursor: pointer;
  border: 1.5px solid transparent;
}

.btn--primary {
  background: var(--color-dark);
  color: var(--color-white);
  border-color: var(--color-dark);
}

.btn--primary:hover {
  background: var(--color-black);
  border-color: var(--color-black);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.btn--outline {
  background: transparent;
  color: var(--color-dark);
  border-color: var(--color-dark);
}

.btn--outline:hover {
  background: var(--color-dark);
  color: var(--color-white);
}

.btn--ghost {
  background: transparent;
  color: var(--color-gray-500);
  border-color: var(--color-gray-300);
}

.btn--ghost:hover {
  border-color: var(--color-dark);
  color: var(--color-dark);
}

.btn--white {
  background: var(--color-white);
  color: var(--color-dark);
  border-color: var(--color-white);
}

.btn--white:hover {
  background: var(--color-gray-100);
}

.btn--white-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.5);
}

.btn--white-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-white);
}

.btn--sm {
  padding: 7px 16px;
  font-size: var(--text-xs);
}

.btn--lg {
  padding: 14px 30px;
  font-size: var(--text-base);
}

.btn--icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-full);
}

/* ============================================================
   KOMPONEN: BADGE / LABEL
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1.5;
}

.badge--dark {
  background: var(--color-dark);
  color: var(--color-white);
}

.badge--light {
  background: var(--color-gray-100);
  color: var(--color-gray-700);
}

.badge--outline {
  background: transparent;
  color: var(--color-gray-500);
  border: 1px solid var(--color-gray-300);
}

/* ============================================================
   KOMPONEN: CARD ARTIKEL
   ============================================================ */
.card-article {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  height: 100%;
}

.card-article__image {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-gray-100);
  aspect-ratio: 16/10;
}

.card-article__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card-article:hover .card-article__image img {
  transform: scale(1.04);
}

.card-article__image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-100);
  color: var(--color-gray-400);
  font-size: var(--text-sm);
}

.card-article__category {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-gray-500);
}

.card-article__title {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: var(--leading-snug);
  color: var(--color-dark);
  transition: color var(--transition-fast);
}

.card-article:hover .card-article__title {
  color: var(--color-black);
}

.card-article__title--sm {
  font-size: var(--text-md);
}

.card-article__title--lg {
  font-size: var(--text-3xl);
}

.card-article__excerpt {
  font-size: var(--text-base);
  color: var(--color-gray-500);
  line-height: var(--leading-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-article__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-gray-400);
  margin-top: auto;
}

.card-article__meta-sep {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--color-gray-300);
  flex-shrink: 0;
}

.card-article__author {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.card-article__author-avatar {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--color-gray-200);
  flex-shrink: 0;
}

/* ============================================================
   KOMPONEN: DIVIDER
   ============================================================ */
.divider {
  border: none;
  border-top: var(--border-light);
  margin: var(--space-8) 0;
}

.divider--dark {
  border-color: var(--color-gray-300);
}

/* ============================================================
   KOMPONEN: SECTION LABEL
   ============================================================ */
.section-label {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.section-label__line {
  flex: 1;
  height: 1px;
  background: var(--color-gray-200);
}

.section-label__text {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gray-400);
  white-space: nowrap;
}

/* ============================================================
   KOMPONEN: AVATAR
   ============================================================ */
.avatar {
  border-radius: 50%;
  object-fit: cover;
  background: var(--color-gray-200);
  flex-shrink: 0;
}

.avatar--xs  { width: 24px; height: 24px; }
.avatar--sm  { width: 32px; height: 32px; }
.avatar--md  { width: 40px; height: 40px; }
.avatar--lg  { width: 56px; height: 56px; }
.avatar--xl  { width: 80px; height: 80px; }
.avatar--2xl { width: 120px; height: 120px; }

/* ============================================================
   KOMPONEN: TAG
   ============================================================ */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-gray-500);
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tag:hover {
  border-color: var(--color-dark);
  color: var(--color-dark);
}

.tag--active {
  background: var(--color-dark);
  color: var(--color-white);
  border-color: var(--color-dark);
}

/* ============================================================
   KOMPONEN: INPUT FORM
   ============================================================ */
.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-gray-500);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: var(--border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-dark);
  background: var(--color-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-dark);
  box-shadow: 0 0 0 3px rgba(26,26,26,0.08);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-gray-400);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

/* ============================================================
   KOMPONEN: PROGRESS BAR
   ============================================================ */
.progress-bar {
  width: 100%;
  height: 3px;
  background: var(--color-gray-100);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  background: var(--color-dark);
  border-radius: var(--radius-full);
  transition: width var(--transition);
}

/* ============================================================
   KOMPONEN: SKELETON LOADER
   ============================================================ */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-gray-100) 25%,
    var(--color-gray-200) 50%,
    var(--color-gray-100) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-pulse 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-pulse {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ============================================================
   KOMPONEN: BREADCRUMB
   ============================================================ */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) 0;
  font-size: var(--text-sm);
  color: var(--color-gray-400);
}

.breadcrumb a {
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--color-dark);
}

.breadcrumb__sep {
  color: var(--color-gray-300);
  font-size: var(--text-xs);
}

.breadcrumb__current {
  color: var(--color-dark);
  font-weight: 600;
}

/* ============================================================
   KOMPONEN: ALERT / NOTICE
   ============================================================ */
.notice {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius);
  border-left: 3px solid;
  font-size: var(--text-sm);
}

.notice--info {
  background: var(--color-gray-50);
  border-color: var(--color-gray-400);
  color: var(--color-gray-700);
}

.notice--success {
  background: #F0FDF4;
  border-color: #22C55E;
  color: #166534;
}

.notice--warning {
  background: #FFFBEB;
  border-color: #F59E0B;
  color: #92400E;
}

.notice--error {
  background: #FEF2F2;
  border-color: #EF4444;
  color: #991B1B;
}

/* ============================================================
   KOMPONEN: PAGINATION
   ============================================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-8) 0;
}

.pagination__item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-gray-500);
  border: var(--border-light);
  transition: all var(--transition-fast);
}

.pagination__item:hover,
.pagination__item--active {
  background: var(--color-dark);
  color: var(--color-white);
  border-color: var(--color-dark);
}

/* ============================================================
   KOMPONEN: BOOK COVER
   ============================================================ */
.book-cover {
  position: relative;
  border-radius: 2px 6px 6px 2px;
  overflow: hidden;
  box-shadow:
    inset -3px 0 8px rgba(0,0,0,0.15),
    var(--shadow);
  background: var(--color-gray-200);
}

.book-cover::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background: rgba(0,0,0,0.15);
  z-index: 1;
}

.book-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ============================================================
   READING PROGRESS BAR (top of page)
   ============================================================ */
#reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--color-dark);
  z-index: calc(var(--z-fixed) + 10);
  transition: width 100ms linear;
}

/* ============================================================
   GRID SYSTEM
   ============================================================ */
.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); }
.grid-5  { display: grid; grid-template-columns: repeat(5, 1fr); gap: var(--space-6); }

/* ============================================================
   RESPONSIVE UTILITIES
   ============================================================ */
@media (max-width: 1024px) {
  :root {
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
  }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-5 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 2.5rem;
    --header-height: 56px;
  }
  .container {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }
  .grid-2, .grid-3, .grid-4, .grid-5 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  :root {
    --text-3xl: 1.5rem;
    --text-4xl: 1.875rem;
    --text-5xl: 2.25rem;
  }
}

/* ============================================================
   HELPER CLASSES
   ============================================================ */
.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-center { text-align: center; }
.text-right  { text-align: right; }

.mt-auto { margin-top: auto; }
.mb-auto { margin-bottom: auto; }

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── TOAST NOTIFICATION ───────────────────────────────────── */
.tb-toast {
  position: fixed;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  background: var(--color-dark);
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-xl);
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.25s, transform 0.25s;
  pointer-events: none;
  white-space: nowrap;
}

.tb-toast--show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.tb-toast--error {
  background: #DC2626;
}

/* ── FOLLOW BUTTON ────────────────────────────────────────── */
.js-follow-author.is-following {
  background: var(--color-gray-100);
  border-color: var(--color-gray-300);
  color: var(--color-gray-600);
}

/* ── SAVE BUTTON ──────────────────────────────────────────── */
.js-save-post.is-saved svg {
  fill: var(--color-dark);
}

/* ── ARCHIVE EMPTY STATE ──────────────────────────────────── */
.archive-empty {
  text-align: center;
  padding: var(--space-16) var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.archive-empty__icon {
  font-size: 3rem;
  opacity: 0.25;
  line-height: 1;
}

.archive-empty__title {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-dark);
}

.archive-empty__sub {
  font-size: var(--text-base);
  color: var(--color-gray-400);
}