*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #faf9f6;
  --card: #ffffff;
  --text: #1a1a2e;
  --text-secondary: #555;
  --accent: #e63946;
  --accent2: #457b9d;
  --accent3: #2a9d8f;
  --accent4: #e9c46a;
  --border: #e0e0e0;
  --shadow: 0 2px 8px rgba(0,0,0,0.06);
  --radius: 12px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --jp-font: 'Yu Gothic', '游ゴシック', 'Noto Sans JP', sans-serif;
}

html { font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}

/* Minimal header */
header {
  background: var(--accent);
  color: white;
  padding: 0.6rem 1.2rem;
  box-shadow: 0 2px 10px rgba(0,0,0,0.12);
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-home {
  color: white;
  text-decoration: none;
  font-size: 1.3rem;
  line-height: 1;
}

.header-title {
  font-size: 1rem;
  font-weight: 700;
  color: white;
  text-decoration: none;
}

.header-title a {
  color: white;
  text-decoration: none;
}

.sidebar-toggle {
  background: none;
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 1.2rem;
  cursor: pointer;
  color: white;
  line-height: 1;
  transition: background 0.15s;
  z-index: 202;
  position: relative;
}

.sidebar-toggle:hover {
  background: rgba(255,255,255,0.15);
}

/* Sidebar */
.sidebar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.4);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}

.sidebar-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

.sidebar {
  position: fixed;
  top: 0;
  right: 0;
  width: 280px;
  height: 100%;
  background: var(--card);
  z-index: 201;
  box-shadow: -4px 0 20px rgba(0,0,0,0.1);
  transform: translateX(100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
}

.sidebar.open {
  transform: translateX(0);
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.sidebar-title {
  font-size: 1rem;
  font-weight: 700;
}

.sidebar-close {
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 4px;
  line-height: 1;
}

.sidebar-body {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}

.sidebar-section {
  padding: 12px 20px;
}

.sidebar-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.sidebar-levels {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.sidebar-level {
  min-width: 44px;
  padding: 6px 10px;
  border: 2px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s;
  font-family: var(--font);
}

.sidebar-level:hover {
  border-color: var(--accent2);
  background: #f0f8ff;
}

.sidebar-level.active {
  border-color: var(--accent2);
  background: var(--accent2);
  color: white;
}

.sidebar-level.disabled {
  opacity: 0.35;
  cursor: default;
}

.sidebar-level.disabled:hover {
  border-color: var(--border);
  background: var(--card);
}

.sidebar-link {
  display: block;
  padding: 10px 0;
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: color 0.15s;
}

.sidebar-link:hover {
  color: var(--accent2);
}

.sidebar-link.active {
  color: var(--accent2);
}

.sidebar-footer {
  border-top: 1px solid var(--border);
  padding: 12px 20px;
  margin-top: auto;
}

.home-link {
  font-size: 0.95rem;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 0;
  margin-bottom: 8px;
  align-items: center;
}

.toolbar .label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-right: 4px;
}

.toggle-btn {
  padding: 6px 16px;
  border: 2px solid var(--border);
  border-radius: 20px;
  background: var(--card);
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font);
}

.toggle-btn:hover {
  border-color: var(--accent2);
  background: #f0f8ff;
}

.toggle-btn.active {
  border-color: var(--accent2);
  background: var(--accent2);
  color: white;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 16px 20px 60px;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 24px;
  margin-bottom: 16px;
  border: 1px solid var(--border);
  transition: transform 0.15s;
}

.card:hover {
  transform: translateY(-1px);
}

/* Landing page level grid */
.level-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  padding: 0 0 40px;
}

.level-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  border: 1px solid var(--border);
  position: relative;
  text-decoration: none;
  color: var(--text);
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  align-items: center;
  gap: 18px;
}

.level-card::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 24px;
  right: 24px;
  height: 4px;
  border-radius: 0 0 4px 4px;
  background: var(--level-color, var(--accent));
}

.level-card::after {
  content: '';
  position: absolute;
  top: 5px;
  left: 44px;
  right: 44px;
  height: 2px;
  border-radius: 0 0 3px 3px;
  background: var(--level-color, var(--accent));
  opacity: 0.35;
  box-shadow: 0 3px 0 0 var(--level-color, var(--accent));
}

.level-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.08);
}

.level-badge {
  min-width: 56px;
  width: 56px;
  height: 56px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: white;
  flex-shrink: 0;
}

.level-info {
  flex: 1;
  min-width: 0;
}

.level-info .level-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.3;
}

.level-info .level-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-top: 4px;
  line-height: 1.4;
}

.level-actions {
  display: flex;
  gap: 6px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.level-actions span {
  font-size: 0.7rem;
  padding: 3px 10px;
  background: #f0f0f0;
  border-radius: 10px;
  font-weight: 600;
  color: var(--text-secondary);
}

.level-actions span:hover {
  background: #e0e0e0;
}

.coming-soon {
  font-size: 0.7rem;
  padding: 3px 12px;
  background: #fff3cd;
  color: #856404;
  border-radius: 8px;
  font-weight: 700;
  display: inline-block;
  margin-top: 8px;
  letter-spacing: 0.5px;
}

/* Kategori cards */
.kategori-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin: 16px 0;
}

.kategori-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
  border: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: transform 0.15s, box-shadow 0.15s;
}

.kategori-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.kategori-card .icon {
  font-size: 2rem;
  margin-bottom: 8px;
}

.kategori-card .nama {
  font-weight: 700;
  font-size: 0.95rem;
}

.kategori-card .count {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Vocab / Grammar list */
.vocab-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.vocab-item:last-child {
  border-bottom: none;
}

.vocab-item .kanji {
  font-size: 1.3rem;
  font-weight: 700;
  font-family: var(--jp-font);
}

.vocab-item .furigana {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.vocab-item .romaji {
  font-size: 0.9rem;
  color: #888;
  font-style: italic;
  margin-top: 2px;
}

.vocab-item .arti {
  font-size: 0.95rem;
  color: var(--accent2);
  font-weight: 600;
  margin-top: 2px;
}

.vocab-item .contoh {
  margin-top: 8px;
  padding: 10px 14px;
  background: #f8f9fa;
  border-radius: 8px;
  font-size: 0.9rem;
  border-left: 3px solid var(--accent3);
}

.vocab-item .contoh .kalimat {
  font-family: var(--jp-font);
}

.speak-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 6px;
  font-size: 0.85rem;
  cursor: pointer;
  margin-left: 6px;
  vertical-align: middle;
  line-height: 1;
  transition: background 0.15s;
}

.speak-btn:hover {
  background: #f0f8ff;
  border-color: var(--accent2);
}

.contoh .speak-btn {
  font-size: 0.75rem;
  padding: 1px 5px;
  margin-left: 4px;
}

.vocab-item .contoh .terjemahan {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 2px;
}

/* Grammar */
.grammar-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.grammar-item:last-child {
  border-bottom: none;
}

.grammar-item .pola {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
  font-family: var(--jp-font);
}

.grammar-item .pola-romaji {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-style: italic;
  margin-top: 2px;
}

.grammar-item .penjelasan {
  margin-top: 6px;
  font-size: 0.95rem;
}

.grammar-item .struktur {
  margin-top: 8px;
  padding: 10px 14px;
  background: #fff8e1;
  border-radius: 8px;
  font-size: 0.85rem;
  font-family: var(--jp-font);
  white-space: pre-line;
  border-left: 3px solid var(--accent4);
}

.grammar-item .contoh-box {
  margin-top: 10px;
}

.grammar-item .contoh-item {
  padding: 8px 12px;
  margin-top: 6px;
  background: #f8f9fa;
  border-radius: 8px;
  border-left: 3px solid var(--accent2);
}

.grammar-item .contoh-item .kalimat {
  font-family: var(--jp-font);
}

/* Ruby (furigana) */
ruby {
  ruby-align: center;
}

rt {
  font-size: 0.55em;
  letter-spacing: 0.5px;
  color: var(--accent);
  user-select: none;
}

/* Toggles */
.romaji-hidden .romaji-text {
  display: none;
}

.furigana-hidden rt {
  display: none;
}

.translation-hidden .translation-text {
  display: none;
}

/* Reading */
.reading-header {
  margin-bottom: 20px;
}

.reading-header .judul {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--jp-font);
}

.reading-header .judul-romaji {
  color: var(--text-secondary);
  font-style: italic;
  margin-top: 2px;
}

.reading-line {
  padding: 6px 0;
  font-size: 1.05rem;
  font-family: var(--jp-font);
  line-height: 2;
}

.reading-line .romaji-text {
  display: block;
  font-size: 0.8rem;
  color: #888;
  font-style: italic;
  font-family: var(--font);
  margin-top: -4px;
}

.reading-terjemahan {
  margin-top: 16px;
  padding: 14px 18px;
  background: #f0f7f4;
  border-radius: var(--radius);
  border-left: 4px solid var(--accent3);
}

.reading-terjemahan h3 {
  font-size: 0.9rem;
  color: var(--accent3);
  margin-bottom: 6px;
}

/* Reading list grid */
.reading-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 14px;
  padding: 8px 0;
}

.reading-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  border: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: transform 0.15s, box-shadow 0.15s;
}

.reading-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.reading-card .icon {
  font-size: 2rem;
  margin-bottom: 10px;
}

.reading-card .title {
  font-weight: 700;
  font-size: 1.05rem;
  font-family: var(--jp-font);
}

.reading-card .title-romaji {
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-style: italic;
  margin-top: 2px;
  margin-bottom: 10px;
}

.reading-card .level-badge-sm {
  display: inline-block;
  padding: 2px 12px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--accent2);
  color: white;
  letter-spacing: 0.5px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent2);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.back-link:hover {
  text-decoration: underline;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.page-subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.breadcrumb {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.breadcrumb a {
  color: var(--accent2);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.search-box {
  width: 100%;
  padding: 10px 16px;
  border: 2px solid var(--border);
  border-radius: 24px;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
  font-family: var(--font);
  margin-bottom: 16px;
}

.search-box:focus {
  border-color: var(--accent2);
}

.hero {
  text-align: center;
  padding: 40px 20px 20px;
}

.hero h2 {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.hero p {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 500px;
  margin: 0 auto;
}

footer {
  text-align: center;
  padding: 24px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border);
  margin-top: 40px;
}

/* Level picker modal */
.level-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.level-modal-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

.level-modal {
  background: var(--card);
  border-radius: 16px;
  padding: 32px 28px;
  max-width: 400px;
  width: 90%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
  text-align: center;
}

.level-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.level-modal h2 {
  font-size: 1.3rem;
  font-weight: 700;
}

.level-modal-close {
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 4px;
  line-height: 1;
}

.level-modal .modal-sub {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.level-modal-options {
  display: flex;
  gap: 12px;
}

.level-modal-option {
  flex: 1;
  padding: 20px 8px;
  border: 2px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
  cursor: pointer;
  text-decoration: none;
  color: var(--text);
  transition: all 0.15s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.level-modal-option:hover {
  border-color: var(--accent2);
  background: #f0f8ff;
  transform: translateY(-2px);
}

.level-modal-option .icon {
  font-size: 1.8rem;
}

.level-modal-option .label {
  font-weight: 700;
  font-size: 0.85rem;
}

@media (max-width: 480px) {
  .level-modal-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .level-modal-option {
    padding: 14px 8px;
  }
}

/* === HEADER AUTH === */
.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
}
.header-right .header-user {
  display: flex;
  align-items: center;
  gap: 6px;
}
.header-right .header-avatar {
  width: 28px; height: 28px;
  border-radius: 50%; object-fit: cover;
}
.header-right .header-uname {
  font-size: 0.8rem;
  font-weight: 600;
  color: rgba(255,255,255,0.9);
  max-width: 90px;
  overflow: hidden; text-overflow: ellipsis;
  white-space: nowrap;
}
.header-right .header-logout-btn {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 6px;
  padding: 3px 9px;
  font-size: 0.7rem;
  font-weight: 600;
  color: #fff;
  cursor: pointer; font-family: inherit;
  transition: background 0.15s;
}
.header-right .header-logout-btn:hover {
  background: rgba(255,77,77,0.3);
  border-color: rgba(255,77,77,0.5);
}

/* === PAGE FADE-IN === */
.page-fade {
  animation: pageFadeIn 0.35s ease;
}
@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === PAGE HEADER BADGE === */
.level-badge-page {
  display: inline-block;
  padding: 2px 14px;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
  letter-spacing: 0.03em;
}

@media (max-width: 600px) {
  html { font-size: 14px; }
  .container { padding: 12px 14px 40px; }
  .card { padding: 14px 16px; }
  .hero { padding: 24px 14px; }
  .hero h2 { font-size: 1.4rem; }
  .level-grid { grid-template-columns: 1fr; }
  .kategori-grid { grid-template-columns: repeat(2, 1fr); }
  header { padding: 1rem; }
}

@media (max-width: 400px) {
  .kategori-grid { grid-template-columns: 1fr; }
}