:root,
[data-theme='light'] {
  --bg-color: #ffffff;
  --text-color: #333333;
  --muted-text-color: #4a4a4a;
  --secondary-text-color: #555555;
  --subtle-text-color: #888888;
  --card-color: #ffffff;
  --sidebar-bg-color: #f9f9f9;
  --sidebar-text-color: #333333;
  --accent-color: #111111;
  --accent-contrast-color: #ffffff;
  --border-color: #d0d0d0;
  --border-strong-color: #999999;
  --input-border-color: #cccccc;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  --overlay-bg-color: rgba(255, 255, 255, 0.9);
  --overlay-card-bg-color: rgba(255, 255, 255, 0.85);
  --overlay-text-color: #1f2933;
  --progress-track-color: #e6eef7;
  --progress-fill-gradient: linear-gradient(90deg, #1abc9c, #3498db);
  --dropzone-bg-color: #f0f7ff;
  --dropzone-border-color: #90caf9;
  --token-hover-bg: #fff59d;
  --token-active-bg: #ffeb3b;
  --verb-color: #111111;
  --verb-dash-color: #666666;
  --masculine-color: #90caf9;
  --feminine-color: #ef9a9a;
  --neuter-color: #a5d6a7;
  --sb-word-color: #222222;
  --sb-lemma-color: #666666;
  --sb-meaning-bg: #f0f4c3;
  --sb-meaning-border: #afb42b;
  --sb-grammar-bg: #f9f9f9;
  --btn-bg-color: #eeeeee;
  --btn-hover-bg-color: #dddddd;
  --btn-text-color: #333333;
}

[data-theme='dark'] {
  --bg-color: #1a1a1a;
  --text-color: #e0e0e0;
  --muted-text-color: #d2d2d2;
  --secondary-text-color: #c0c0c0;
  --subtle-text-color: #a0a0a0;
  --card-color: #222222;
  --sidebar-bg-color: #2d2d2d;
  --sidebar-text-color: #e0e0e0;
  --accent-color: #90caf9;
  --accent-contrast-color: #0f172a;
  --border-color: #2f2f2f;
  --border-strong-color: #3d3d3d;
  --input-border-color: #444444;
  --shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
  --overlay-bg-color: rgba(18, 18, 18, 0.9);
  --overlay-card-bg-color: rgba(30, 30, 30, 0.85);
  --overlay-text-color: #e5e7eb;
  --progress-track-color: #2a2a2a;
  --progress-fill-gradient: linear-gradient(90deg, #6dd5ed, #2193b0);
  --dropzone-bg-color: #1f2933;
  --dropzone-border-color: #90caf9;
  --token-hover-bg: #423b13;
  --token-active-bg: #5c4c1c;
  --verb-color: #e0e0e0;
  --verb-dash-color: #dcdcdc;
  --masculine-color: #90caf9;
  --feminine-color: #ef9a9a;
  --neuter-color: #a5d6a7;
  --sb-word-color: #f5f5f5;
  --sb-lemma-color: #d2d2d2;
  --sb-meaning-bg: #232130;
  --sb-meaning-border: #90caf9;
  --sb-grammar-bg: #181818;
  --btn-bg-color: #2b2b2b;
  --btn-hover-bg-color: #343434;
  --btn-text-color: #f5f5f5;
}

[data-theme='examined'] {
  --bg-color: #000000;
  --text-color: #fcfcfa;
  --muted-text-color: #e6e0f0;
  --secondary-text-color: #d8d0e7;
  --subtle-text-color: #c7bed9;
  --card-color: #0a0411;
  --sidebar-bg-color: #261135;
  --sidebar-text-color: #fcfcfa;
  --accent-color: #000000;
  --accent-contrast-color: #fcfcfa;
  --border-color: #fcfcfa;
  --border-strong-color: #d4c7ed;
  --input-border-color: #fcfcfa;
  --shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
  --overlay-bg-color: rgba(38, 17, 53, 0.9);
  --overlay-card-bg-color: rgba(0, 0, 0, 0.85);
  --overlay-text-color: #fcfcfa;
  --progress-track-color: #38204d;
  --progress-fill-gradient: linear-gradient(90deg, #fcfcfa, #9c7bd0);
  --dropzone-bg-color: #38204d;
  --dropzone-border-color: #fcfcfa;
  --token-hover-bg: #3d224f;
  --token-active-bg: #4b2a63;
  --verb-color: #fcfcfa;
  --verb-dash-color: #c7bed9;
  --masculine-color: #90caf9;
  --feminine-color: #ef9a9a;
  --neuter-color: #a5d6a7;
  --sb-word-color: #fcfcfa;
  --sb-lemma-color: #c7bed9;
  --sb-meaning-bg: #38204d;
  --sb-meaning-border: #fcfcfa;
  --sb-grammar-bg: #13091c;
  --btn-bg-color: #fcfcfa;
  --btn-hover-bg-color: #d4c7ed;
  --btn-text-color: #000000;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Georgia', 'Times New Roman', serif;
  background: var(--bg-color);
  color: var(--text-color);
}

a {
  color: inherit;
}

/* Landing Page */
body.landing {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
}

.hero {
  max-width: 900px;
  width: 100%;
  background: var(--card-color);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 40px;
  display: grid;
  gap: 28px;
}

.hero h1 {
  margin: 0;
  font-size: 42px;
  letter-spacing: 0.04em;
}

.hero p {
  margin: 0;
  color: var(--muted-text-color);
  line-height: 1.7;
}

.upload-card {
  border: 2px dashed var(--border-color);
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.upload-card:hover {
  border-color: var(--border-strong-color);
}

.tab-list {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
}

.tab-button {
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--card-color);
  cursor: pointer;
  font-family: 'Segoe UI', sans-serif;
  letter-spacing: 0.01em;
}

.tab-button.active {
  background: var(--accent-color);
  color: var(--accent-contrast-color);
  border-color: var(--accent-color);
}

.drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  color: var(--secondary-text-color);
  padding: 10px;
}

.drop-zone strong {
  font-size: 18px;
  color: var(--text-color);
}

.drop-zone small {
  color: var(--subtle-text-color);
}

.drop-zone.dragover {
  background: var(--dropzone-bg-color);
  border-color: var(--dropzone-border-color);
}

.primary-button {
  margin-top: 16px;
  background: var(--accent-color);
  color: var(--accent-contrast-color);
  border: none;
  padding: 12px 20px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 16px;
  font-family: 'Segoe UI', sans-serif;
  letter-spacing: 0.02em;
}

.primary-button:hover {
  background: var(--border-strong-color);
}

.actions {
  margin-top: 16px;
  text-align: right;
}

textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--input-border-color);
  border-radius: 8px;
  font-family: inherit;
  font-size: 16px;
  resize: vertical;
  min-height: 200px;
}

#loading-overlay {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: var(--overlay-bg-color);
  backdrop-filter: blur(2px);
  z-index: 1000;
  font-family: 'Segoe UI', sans-serif;
  text-align: center;
  padding: 20px;
}

#loading-overlay.visible {
  display: flex;
}

.loading-card {
  background: var(--overlay-card-bg-color);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 28px 32px;
  max-width: 420px;
  width: 100%;
}

.progress-wrapper {
  width: 100%;
  height: 12px;
  background: var(--progress-track-color);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 16px;
}

#progress-fill {
  width: 0%;
  height: 100%;
  background: var(--progress-fill-gradient);
  border-radius: 999px;
  transition: width 15s linear;
}

#status-text {
  margin: 0;
  color: var(--overlay-text-color);
  font-size: 16px;
  letter-spacing: 0.01em;
}

/* Reader Layout */
body.reader {
  padding: 30px;
}

.reader-layout {
  display: flex;
  gap: 20px;
  min-height: calc(100vh - 60px);
}

.text-area {
  flex: 3;
  background: var(--card-color);
  padding: 40px;
  border-radius: 8px;
  box-shadow: var(--shadow);
  overflow-y: auto;
  line-height: 1.8;
  font-size: 19px;
}

.sidebar {
  flex: 1;
  background: var(--sidebar-bg-color, var(--card-color));
  padding: 24px;
  border-radius: 8px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  font-family: 'Segoe UI', sans-serif;
  gap: 10px;
  color: var(--sidebar-text-color, var(--text-color));
}

.sidebar-section {
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 14px;
  background: var(--sidebar-bg-color, var(--card-color));
}

.sidebar-section.placeholder-section {
  background: var(--sidebar-bg-color, var(--card-color));
}

.section-header {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--sidebar-text-color, var(--text-color));
}

.theme-switcher {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0;
  border: none;
  background: transparent;
}

.theme-switcher label {
  font-weight: 600;
  color: var(--secondary-text-color);
  font-size: 14px;
}

.theme-switcher select {
  padding: 10px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--card-color);
  color: var(--text-color);
  font-family: 'Segoe UI', sans-serif;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
  font-family: 'Segoe UI', sans-serif;
  font-size: 14px;
  color: var(--secondary-text-color);
}

.legend-item {
  padding-bottom: 4px;
  border-bottom: 2px solid var(--border-color);
}

.legend-item.masculine {
  border-color: var(--masculine-color);
}

.legend-item.feminine {
  border-color: var(--feminine-color);
}

.legend-item.neuter {
  border-color: var(--neuter-color);
}

.legend-item.verb {
  border-color: var(--accent-color);
  font-weight: 600;
}

.token {
  cursor: pointer;
  padding: 1px 2px;
  border-radius: 3px;
  transition: background 0.2s;
}

.token:hover {
  background-color: var(--token-hover-bg);
}

.token.active {
  background-color: var(--token-active-bg);
}


.verb-finite,
.verb-end {
  font-weight: 800;
  color: inherit;
  border-bottom: none;
}

.show-verbs .verb-finite {
  color: var(--verb-color);
  background: rgba(144, 202, 249, 0.18);
  border-bottom: 2px solid var(--verb-color);
}

.show-verbs .verb-end {
  color: var(--verb-color);
  background: rgba(144, 202, 249, 0.18);
  border-bottom: 2px dashed var(--verb-dash-color);
}

.gender-Masc,
.gender-Fem,
.gender-Neut {
  border-bottom: none;
}

.show-masc .gender-Masc {
  background: rgba(144, 202, 249, 0.2);
  border-bottom: 2px solid var(--masculine-color);
}

.show-fem .gender-Fem {
  background: rgba(239, 154, 154, 0.2);
  border-bottom: 2px solid var(--feminine-color);
}

.show-neut .gender-Neut {
  background: rgba(165, 214, 167, 0.2);
  border-bottom: 2px solid var(--neuter-color);
}

.show-nom .case-Nom {
  background: rgba(150, 150, 150, 0.2);
  border-bottom: 2px solid #aaa;
}

.show-acc .case-Acc {
  background: rgba(212, 163, 115, 0.2);
  border-bottom: 2px solid #d4a373;
}

.show-dat .case-Dat {
  background: rgba(156, 39, 176, 0.2);
  border-bottom: 2px solid #9c27b0;
}

.show-gen .case-Gen {
  background: rgba(255, 152, 0, 0.2);
  border-bottom: 2px solid #ff9800;
}

.show-adj .pos-ADJ {
  background: rgba(76, 175, 80, 0.2);
  border-bottom: 2px solid #4caf50;
}

.show-plur .num-Plur {
  letter-spacing: 1px;
  text-decoration: underline double;
  background: rgba(153, 153, 153, 0.12);
}

.show-subj .mood-Subj {
  font-style: italic;
  color: #e91e63;
}

.show-ent .ent-Name {
  background-color: #e0e0e0;
  border-radius: 4px;
  border: none;
}

.sb-word {
  font-size: 2em;
  font-weight: bold;
  color: var(--sb-word-color);
  font-family: 'Georgia', serif;
}

.sb-lemma {
  color: var(--sb-lemma-color);
  font-style: italic;
  margin-bottom: 10px;
}

.sidebar-label {
  font-weight: 600;
  color: var(--secondary-text-color);
  margin-top: 6px;
}

.sb-meaning {
  font-size: 1.05em;
  background: var(--sb-meaning-bg);
  padding: 15px;
  border-radius: 6px;
  border-left: 5px solid var(--sb-meaning-border);
  margin-bottom: 10px;
}

.sb-grammar {
  background: var(--sb-grammar-bg);
  padding: 15px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  line-height: 1.6;
  font-size: 0.95em;
}

.sb-reason {
  margin-top: 12px;
  background: #fff3e0;
  border-left: 5px solid #ffb74d;
  border-radius: 6px;
  padding: 12px 14px;
  color: var(--text-color);
}

.view-settings {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border: none;
  padding: 0;
  background: transparent;
}

.toggle-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toggle-title {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--sidebar-text-color, var(--text-color));
}

.toggle-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 8px;
}

.toggle-pill {
  position: relative;
}

.toggle-pill input[type='checkbox'] {
  position: absolute;
  opacity: 0;
  inset: 0;
  pointer-events: none;
}

.toggle-pill label {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: var(--sidebar-bg-color, var(--card-color));
  color: var(--sidebar-text-color, var(--text-color));
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.toggle-pill label:hover {
  border-color: var(--border-strong-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.toggle-pill input[type='checkbox']:checked + label {
  background: var(--accent-color);
  color: var(--accent-contrast-color);
  border-color: var(--accent-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
}

.toggle-pill input[type='checkbox']:focus-visible + label {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}