/* ── DESIGN SYSTEM & BASE VARIABLES ───────────────────────────────────────── */
:root {
  /* Fonts */
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* HSL Colors - Dark Theme (Default) */
  --bg-app: hsl(224, 25%, 7%);
  --bg-gradient: radial-gradient(circle at 50% 0%, hsl(262, 45%, 15%) 0%, hsl(224, 25%, 7%) 70%);
  --panel-bg: hsla(223, 20%, 12%, 0.6);
  --panel-border: hsla(0, 0%, 100%, 0.07);
  --panel-border-hover: hsla(174, 85%, 48%, 0.3);
  --text-primary: hsl(210, 20%, 98%);
  --text-secondary: hsl(215, 15%, 75%);
  --text-muted: hsl(215, 10%, 55%);
  
  --accent-teal: hsl(174, 85%, 48%);
  --accent-purple: hsl(262, 75%, 65%);
  --accent-purple-glow: hsla(262, 75%, 65%, 0.25);
  --accent-teal-glow: hsla(174, 85%, 48%, 0.2);
  --logo-title-accent: var(--accent-purple);
  
  --card-bg: hsla(223, 20%, 14%, 0.4);
  --card-bg-hover: hsla(223, 20%, 14%, 0.7);
  --card-bg-active: hsla(174, 85%, 48%, 0.08);
  --card-border-active: hsl(174, 85%, 48%);
  
  --input-bg-focus: hsla(223, 20%, 14%, 0.6);
  
  --shadow-premium: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px hsla(174, 85%, 48%, 0.15);
  
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;

  /* Category specific variables - Dark Theme (Default) */
  --cat-general-bg: var(--accent-teal-glow);
  --cat-general-text: var(--accent-teal);
  --cat-general-border: hsla(174, 85%, 48%, 0.2);

  --cat-linguistics-bg: var(--accent-purple-glow);
  --cat-linguistics-text: var(--accent-purple);
  --cat-linguistics-border: hsla(262, 75%, 65%, 0.25);

  --cat-science-bg: hsla(199, 89%, 48%, 0.2);
  --cat-science-text: hsl(199, 89%, 68%);
  --cat-science-border: hsla(199, 89%, 48%, 0.3);

  --cat-math-bg: hsla(349, 89%, 48%, 0.2);
  --cat-math-text: hsl(349, 89%, 68%);
  --cat-math-border: hsla(349, 89%, 48%, 0.3);

  --cat-computer-bg: hsla(48, 89%, 48%, 0.2);
  --cat-computer-text: hsl(48, 89%, 68%);
  --cat-computer-border: hsla(48, 89%, 48%, 0.3);
}

/* Light Theme Variables */
@media (prefers-color-scheme: light) {
  :root {
    --bg-app: hsl(210, 30%, 96%);
    --bg-gradient: radial-gradient(circle at 50% 0%, hsl(262, 50%, 92%) 0%, hsl(210, 30%, 96%) 70%);
    --panel-bg: rgba(255, 255, 255, 0.7);
    --panel-border: rgba(0, 0, 0, 0.08);
    --panel-border-hover: hsla(262, 75%, 65%, 0.3);
    --text-primary: hsl(224, 25%, 12%);
    --text-secondary: hsl(220, 15%, 35%);
    --text-muted: hsl(220, 10%, 55%);
    
    --accent-teal: hsl(262, 75%, 55%);
    --accent-purple: hsl(174, 85%, 35%);
    --accent-purple-glow: hsla(174, 85%, 35%, 0.15);
    --accent-teal-glow: hsla(262, 75%, 55%, 0.1);
    --logo-title-accent: var(--accent-teal);
    
    --card-bg: rgba(255, 255, 255, 0.5);
    --card-bg-hover: rgba(255, 255, 255, 0.7);
    --card-bg-active: hsla(262, 75%, 55%, 0.06);
    --card-border-active: hsl(262, 75%, 55%);
    
    --input-bg-focus: rgba(255, 255, 255, 0.8);
    
    --shadow-premium: 0 8px 24px 0 rgba(100, 110, 140, 0.1);
    --shadow-glow: 0 0 20px hsla(262, 75%, 55%, 0.1);

    /* Category specific variables - Light Theme */
    --cat-general-bg: var(--accent-teal-glow);
    --cat-general-text: var(--accent-teal);
    --cat-general-border: hsla(262, 75%, 55%, 0.15);

    --cat-linguistics-bg: var(--accent-purple-glow);
    --cat-linguistics-text: var(--accent-purple);
    --cat-linguistics-border: hsla(174, 85%, 35%, 0.2);

    --cat-science-bg: hsla(199, 89%, 40%, 0.1);
    --cat-science-text: hsl(199, 89%, 35%);
    --cat-science-border: hsla(199, 89%, 40%, 0.15);

    --cat-math-bg: hsla(349, 89%, 40%, 0.1);
    --cat-math-text: hsl(349, 89%, 35%);
    --cat-math-border: hsla(349, 89%, 40%, 0.15);

    --cat-computer-bg: hsla(48, 89%, 30%, 0.1);
    --cat-computer-text: hsl(48, 89%, 30%);
    --cat-computer-border: hsla(48, 89%, 30%, 0.15);
  }
}

/* ── BASE STYLES ──────────────────────────────────────────────────────────── */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background: var(--bg-app);
  background-image: var(--bg-gradient);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Stunning Floating Glowing Blobs */
.glass-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.glass-bg::before, .glass-bg::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.15;
}

.glass-bg::before {
  width: 40vw;
  height: 40vw;
  background: var(--accent-purple);
  top: -10vw;
  right: 10vw;
}

.glass-bg::after {
  width: 30vw;
  height: 30vw;
  background: var(--accent-teal);
  bottom: 10vw;
  left: 5vw;
}

/* Custom Premium Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--panel-border);
  border-radius: 4px;
  transition: var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ── HEADER ────────────────────────────────────────────────────────────────── */
.app-header {
  border-bottom: 1px solid var(--panel-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: sticky;
  top: 0;
  z-index: 100;
  background: hsla(224, 25%, 7%, 0.3);
}

@media (prefers-color-scheme: light) {
  .app-header {
    background: rgba(255, 255, 255, 0.3);
  }
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  width: 28px;
  height: 28px;
  object-fit: contain;
  transition: var(--transition-smooth);
  pointer-events: none;
}

.logo-area:has(.logo-link.active) .logo-icon {
  cursor: pointer;
  pointer-events: auto;
}

.logo-area:has(.logo-link.active) .logo-icon:hover {
  opacity: 0.8;
  transform: translateY(-1px) scale(1.05);
}

.logo-area h1 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  display: flex;
}

.logo-link {
  text-decoration: none;
  background: linear-gradient(135deg, var(--text-primary) 30%, var(--logo-title-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  cursor: default;
  pointer-events: none;
  transition: var(--transition-smooth);
}

.logo-link.active {
  cursor: pointer;
  pointer-events: auto;
}

.logo-link.active:hover {
  opacity: 0.8;
}

.badge {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 99px;
  background: var(--accent-purple-glow);
  color: var(--accent-purple);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.icon-button {
  background: var(--card-bg);
  border: 1px solid var(--panel-border);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.icon-button:hover {
  border-color: var(--accent-teal);
  background: var(--card-bg-active);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}



/* Language Selector */
.language-selector {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--card-bg);
  border: 1px solid var(--panel-border);
  padding: 0.4rem 0.75rem;
  border-radius: 10px;
  color: var(--text-secondary);
  transition: var(--transition-smooth);
}

.language-selector:hover {
  border-color: var(--accent-teal);
  background: var(--card-bg-active);
  box-shadow: var(--shadow-glow);
}

.language-selector select {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  outline: none;
  padding-right: 0.25rem;
}

.language-selector select option {
  background: var(--bg-app);
  color: var(--text-primary);
}

.globe-icon {
  color: var(--text-muted);
  flex-shrink: 0;
}



/* ── LAYOUT STRUCTURE ──────────────────────────────────────────────────────── */
.app-layout {
  flex: 1;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  grid-template-rows: auto;
  gap: 2rem;
  height: auto;
  min-height: 0;
  max-height: none;
  overflow: visible;
}

.dictionary-pane {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  height: auto;
  overflow-y: visible;
  overflow-x: hidden;
  padding-right: 0.5rem;
}

.interactive-pane {
  position: sticky;
  top: 104px;
  align-self: start;
  height: calc(100vh - 104px - 2rem);
  display: flex;
  flex-direction: column;
}

/* Glassmorphism Panel base */
.glass-panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 20px;
  box-shadow: var(--shadow-premium);
  transition: var(--transition-smooth);
}

/* ── SEARCH PANEL ─────────────────────────────────────────────────────────── */
.search-box {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 1rem;
  color: var(--text-muted);
  pointer-events: none;
}

#search-input {
  width: 100%;
  padding: 1rem 3rem 1rem 2.75rem;
  border-radius: 12px;
  border: 1px solid var(--panel-border);
  background: var(--card-bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
  transition: var(--transition-smooth);
}

#search-input:focus {
  border-color: var(--accent-teal);
  box-shadow: var(--shadow-glow);
  background: var(--input-bg-focus);
}

.clear-button {
  position: absolute;
  right: 1rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: var(--transition-fast);
}

.clear-button:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.1);
}

.filter-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.filter-tabs {
  display: flex;
  background: var(--card-bg);
  padding: 0.25rem;
  border-radius: 10px;
  border: 1px solid var(--panel-border);
  overflow-x: auto;
  scrollbar-width: none; /* Hide scrollbar on Firefox */
}

.filter-tabs::-webkit-scrollbar {
  display: none; /* Hide scrollbar on Chrome/Safari */
}

.filter-tab {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: 8px;
  transition: var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
}

.filter-tab:hover {
  color: var(--text-primary);
}

.filter-tab.active {
  background: var(--accent-teal-glow);
  color: var(--accent-teal);
  box-shadow: inset 0 0 0 1px hsla(174, 85%, 48%, 0.15);
}

.results-stats {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ── DICTIONARY WORD LIST ─────────────────────────────────────────────────── */
.word-list-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  align-content: start;
}

.word-card {
  background: var(--card-bg);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 1.25rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.75rem;
  transition: var(--transition-smooth);
  animation: cardIn 0.3s ease-out forwards;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.word-card:hover {
  transform: translateY(-4px);
  border-color: var(--panel-border-hover);
  background: var(--card-bg-hover);
  box-shadow: 0 6px 20px 0 rgba(0, 0, 0, 0.15);
}

.word-card.active {
  border-color: var(--card-border-active);
  background: var(--card-bg-active);
  box-shadow: var(--shadow-glow);
}

.word-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.word-poto {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.word-type {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border: 1px solid transparent;
  transition: var(--transition-fast);
  margin-top: 0.25rem;
}

.word-english {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

mark.search-highlight {
  background-color: var(--accent-purple-glow);
  color: inherit;
  border-bottom: 1.5px solid var(--accent-purple);
  border-radius: 2px 2px 0 0;
}

.word-match-detail {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.3;
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px dashed var(--panel-border);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── INTERACTIVE & DETAILS PANES ─────────────────────────────────────────── */
.info-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: 3rem;
  text-align: center;
}

.panel-illustration {
  color: var(--accent-teal);
  margin-bottom: 1.5rem;
  opacity: 0.8;
  animation: float 4s ease-in-out infinite;
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
  100% { transform: translateY(0px); }
}

.info-panel h2 {
  font-family: var(--font-display);
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.info-panel p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 320px;
  line-height: 1.6;
  margin-bottom: 0;
}

/* Detail Panel loaded */
.detail-panel {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 2rem;
  position: relative;
  overflow-y: auto;
}

.close-detail-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  display: none; /* Only visible on mobile/drawer mode */
}

.detail-header {
  border-bottom: 1px solid var(--panel-border);
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
}

.detail-category-badge {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  background: var(--accent-teal-glow);
  color: var(--accent-teal);
  display: inline-block;
  margin-bottom: 0.75rem;
  border: 1px solid transparent;
  transition: var(--transition-fast);
}

.detail-poto {
  font-family: var(--font-display);
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.1;
}

.detail-body {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.detail-section {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.section-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: var(--text-muted);
}

.section-sub {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.detail-english {
  font-size: 1.2rem;
  font-weight: 500;
  line-height: 1.5;
  color: var(--text-primary);
}

.detail-etymology {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary);
  background: var(--card-bg);
  border: 1px solid var(--panel-border);
  padding: 0.85rem 1.15rem;
  border-radius: 12px;
  font-family: var(--font-body);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.detail-semantic-space {
  background: var(--card-bg);
  border: 1px solid var(--panel-border);
  padding: 0.85rem 1.15rem;
  border-radius: 12px;
  font-family: var(--font-body);
}

.semantic-space-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.semantic-space-info {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.semantic-space-icon {
  color: var(--accent-purple);
  flex-shrink: 0;
  display: inline-flex;
}

.semantic-space-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--accent-purple-glow);
  color: var(--accent-purple);
  border: 1px solid hsla(262, 75%, 65%, 0.2);
  padding: 0.45rem 0.9rem;
  border-radius: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  transition: var(--transition-smooth);
}

.semantic-space-link:hover {
  background: hsla(262, 75%, 65%, 0.35);
  border-color: hsla(262, 75%, 65%, 0.4);
  box-shadow: 0 0 12px hsla(262, 75%, 65%, 0.3);
  transform: translateY(-2px);
}

.semantic-space-link:active {
  transform: translateY(0);
}

.semantic-space-link .toki-pona-word {
  font-weight: 700;
}

/* Inline etymology tags styling */
.etymology-tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8rem;
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
  text-decoration: none;
  transition: var(--transition-smooth);
  vertical-align: middle;
  margin: 0 0.15rem;
}

.lang-tag {
  background: var(--accent-teal-glow);
  color: var(--accent-teal);
  border: 1px solid hsla(174, 85%, 48%, 0.2);
}

.lang-tag:hover {
  background: hsla(174, 85%, 48%, 0.25);
  box-shadow: 0 0 10px hsla(174, 85%, 48%, 0.2);
  transform: translateY(-1px);
}

.book-tag {
  background: var(--accent-purple-glow);
  color: var(--accent-purple);
  border: 1px solid hsla(262, 75%, 65%, 0.2);
}

.book-tag:hover {
  background: hsla(262, 75%, 65%, 0.3);
  box-shadow: 0 0 10px hsla(262, 75%, 65%, 0.25);
  transform: translateY(-1px);
}

.antonym-link {
  color: var(--accent-purple);
  text-decoration: none;
  font-weight: 700;
  border-bottom: 1px dashed var(--accent-purple-glow);
  transition: var(--transition-smooth);
  cursor: pointer;
  padding: 0 0.15rem;
  margin: 0 0.1rem;
}

.antonym-link:hover {
  color: var(--accent-teal);
  border-bottom-color: var(--accent-teal);
  background: var(--accent-teal-glow);
  border-radius: 4px;
}

.synonym-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.synonym-tag {
  font-size: 0.85rem;
  padding: 0.4rem 0.8rem;
  background: var(--card-bg);
  border: 1px solid var(--panel-border);
  color: var(--text-secondary);
  border-radius: 8px;
}

/* Compound Morpheme chain */
.morpheme-chain {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  justify-content: flex-start;
  gap: 0.5rem;
}

.morpheme-item {
  background: var(--card-bg);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.25rem;
  position: relative;
  transition: var(--transition-smooth);
}

.morpheme-item.clickable {
  cursor: pointer;
  text-decoration: none;
}

.morpheme-item.clickable:hover {
  transform: translateY(-2px);
  border-color: var(--panel-border-hover);
  background: var(--card-bg-hover);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.morpheme-item .morpheme-poto {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent-purple);
}

.morpheme-item .morpheme-meaning {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.3;
}

/* Suffix Grammar Playground */
.suffix-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.suffix-btn {
  background: var(--card-bg);
  border: 1px solid var(--panel-border);
  color: var(--text-primary);
  padding: 0.6rem 0.5rem;
  border-radius: 8px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.1rem;
  transition: var(--transition-fast);
}

.suffix-btn .sub {
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--text-muted);
}

.suffix-btn:hover {
  border-color: var(--accent-teal);
  background: var(--card-bg-active);
}

.suffix-btn.active {
  background: var(--accent-teal-glow);
  border-color: var(--accent-teal);
  color: var(--accent-teal);
}

.suffix-btn.active .sub {
  color: var(--accent-teal);
}

.playground-result {
  background: var(--card-bg);
  border: 1px dashed var(--panel-border);
  padding: 1.25rem;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
  text-align: center;
}

.playground-output {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.poto-word-output {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
}

.playground-meaning {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
  max-width: 320px;
}

/* Loading/Empty list layouts */
.loading-state, .no-results {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  text-align: center;
  color: var(--text-muted);
  gap: 1rem;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--panel-border);
  border-top-color: var(--accent-teal);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── FOOTER ───────────────────────────────────────────────────────────────── */
.app-footer {
  text-align: center;
  padding: 1.5rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--panel-border);
  background: hsla(224, 25%, 7%, 0.1);
}

/* ── RESPONSIVE ADAPTATIONS ───────────────────────────────────────────────── */
@media (max-width: 900px) {
  .app-layout {
    grid-template-columns: 1fr;
    height: auto;
    overflow-y: visible;
  }
  
  .dictionary-pane {
    height: auto;
  }
  
  /* Details overlay drawer */
  .interactive-pane {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1000;
    pointer-events: none;
  }
  
  .interactive-pane .detail-panel {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 85vh;
    border-radius: 24px 24px 0 0;
    border-top: 1px solid var(--panel-border);
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: auto;
    background: var(--bg-app);
  }
  
  .interactive-pane.drawer-open {
    pointer-events: auto;
  }
  
  .interactive-pane.drawer-open .detail-panel {
    transform: translateY(0);
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.4);
  }
  
  .interactive-pane.drawer-open::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    pointer-events: auto;
  }
  
  .close-detail-btn {
    display: flex;
  }
  
  .info-panel {
    display: none !important; /* Hide placeholder on mobile */
  }
}

/* ── GEMINI RELATED WORDS SEARCH STYLES ──────────────────────────────────── */

.gemini-search-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-teal) 100%);
  color: #ffffff;
  border: none;
  padding: 0.8rem 1.5rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 12px;
  cursor: pointer;
  margin-top: 1.25rem;
  box-shadow: 0 4px 15px rgba(120, 80, 220, 0.4);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.gemini-search-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(120, 80, 220, 0.6), var(--shadow-glow);
}

.gemini-search-btn:active {
  transform: translateY(1px);
}

.gemini-search-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.25),
    transparent
  );
  transition: 0.6s;
}

.gemini-search-btn:hover::before {
  left: 100%;
}

.gemini-stars-icon {
  animation: pulseStars 2s infinite ease-in-out;
}

@keyframes pulseStars {
  0% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.15); opacity: 1; filter: drop-shadow(0 0 4px #fff); }
  100% { transform: scale(1); opacity: 0.9; }
}

.gemini-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.gemini-error {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  background: hsla(349, 89%, 48%, 0.1);
  border: 1px solid hsla(349, 89%, 48%, 0.2);
  color: hsl(349, 89%, 78%);
  font-size: 0.85rem;
}

@media (prefers-color-scheme: light) {
  .gemini-error {
    background: hsla(349, 89%, 48%, 0.05);
    color: hsl(349, 89%, 40%);
  }
}

.gemini-results-container {
  width: 100%;
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  text-align: left;
  animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.gemini-no-results {
  margin-top: 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-style: italic;
}