:root {
  color-scheme: dark;
  --bg: #18181b;
  --panel: #1f1f23;
  --panel-2: #232329;
  --border: #2b2b33;
  --text: #ffffff;
  --muted: #a1a1aa;
  --accent: #6a7cff;
  --accent-2: #8b6bff;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  background-image:
    radial-gradient(1400px 800px at 12% -12%, rgba(106, 124, 255, 0.14), transparent 60%),
    radial-gradient(1100px 700px at 88% -5%, rgba(139, 107, 255, 0.12), transparent 55%);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, Segoe UI, sans-serif;
  font-weight: 500;
}

.app {
  min-height: 100vh;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.title {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.controls {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  flex-wrap: wrap;
  flex: 1 1 auto;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  background: linear-gradient(180deg, rgba(36, 36, 42, 0.7), rgba(31, 31, 35, 0.7));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.file-actions,
.translate-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.file-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  width: 360px;
}

.file-actions > * {
  flex: 1 1 0;
  min-width: 0;
}

.translate-actions {
  flex: 1 1 auto;
  min-width: 0;
  justify-content: flex-end;
}

.toolbar-divider {
  width: 1px;
  align-self: stretch;
  background: var(--border);
  opacity: 0.6;
  display: none;
}

.upload-inline {
  display: flex;
  width: 100%;
}

.upload-inline input {
  display: none;
}

@media (min-width: 901px) {
  .controls {
    flex-wrap: nowrap;
  }
}

.select-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
  min-width: 160px;
  flex: 1 1 160px;
}

.select-group.compact {
  flex: 0 1 170px;
  min-width: 150px;
}

select {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 34px 8px 14px;
  min-width: 150px;
  width: 100%;
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%),
    linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 18px) 55%, calc(100% - 12px) 55%;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(106, 124, 255, 0.18);
  background: #26262d;
}

.btn {
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 10px 16px;
  cursor: pointer;
  font-weight: 600;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}

.btn.icon {
  width: 32px;
  height: 32px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--panel-2);
  border-color: var(--border);
  flex: 0 0 32px;
}

.btn.swap {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #2a2a33;
  border-color: var(--border);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.25);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn.swap:hover {
  transform: translateY(-1px) rotate(10deg);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.35);
  background: #30303a;
}

.btn.icon img {
  width: 20px;
  height: 20px;
}

.btn.icon:hover {
  background: #2a2a31;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  box-shadow: 0 8px 16px rgba(106, 124, 255, 0.25);
}

.btn.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(106, 124, 255, 0.35);
}

.btn.ghost {
  background: var(--panel-2);
  border-color: var(--border);
  color: var(--text);
}

.btn.ghost:hover {
  background: #2a2a31;
  transform: translateY(-1px);
}


.panes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  flex: 1;
}

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

.pane-title {
  font-size: 13px;
  color: var(--muted);
}

textarea {
  flex: 1;
  min-height: 300px;
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  resize: vertical;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.02);
  font-size: 19px;
  line-height: 1.6;
  width: 100%;
  min-width: 0;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(106, 124, 255, 0.18);
}

@media (min-width: 1400px) {
  .app {
    max-width: min(100%, 1680px);
    padding: 28px 40px;
  }

  .panes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  textarea {
    min-height: 480px;
    font-size: 20px;
  }
}

@media (min-width: 1800px) {
  .app {
    max-width: 100%;
    padding: 32px 56px;
  }

  textarea {
    min-height: 560px;
    font-size: 21px;
  }
}

textarea::-webkit-scrollbar {
  width: 10px;
}

textarea::-webkit-scrollbar-track {
  background: #1b1b20;
  border-radius: 10px;
}

textarea::-webkit-scrollbar-thumb {
  background: #3a3a44;
  border-radius: 10px;
}

textarea::-webkit-scrollbar-thumb:hover {
  background: #4a4a56;
}

.status {
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 900px) {
  .panes {
    grid-template-columns: 1fr;
  }

  .topbar {
    align-items: stretch;
  }

  .controls {
    width: 100%;
  }

  .btn.primary,
  .btn.ghost {
    flex: 1 1 160px;
    justify-content: center;
  }

  .btn.icon {
    align-self: flex-end;
  }

  .toolbar {
    flex-wrap: wrap;
  }

  .toolbar-divider {
    display: none;
  }

  .file-actions,
  .translate-actions {
    width: 100%;
    justify-content: space-between;
  }

  .file-actions {
    width: 100%;
  }
}

@media (max-width: 1200px) {
  .app {
    padding: 22px;
  }
}

@media (max-width: 1024px) {
  .app {
    padding: 20px;
  }

  textarea {
    font-size: 18px;
  }
}

@media (max-width: 768px) {
  .app {
    padding: 18px;
    gap: 16px;
  }

  .title {
    font-size: 18px;
  }

  .controls {
    gap: 10px;
  }

  .select-group {
    min-width: 140px;
  }

  textarea {
    min-height: 260px;
    font-size: 17px;
  }
}

@media (max-width: 600px) {
  .app {
    padding: 16px;
  }

  .topbar {
    gap: 12px;
  }

  .controls {
    gap: 8px;
  }

  .file-actions,
  .translate-actions {
    gap: 8px;
  }

  .btn {
    padding: 10px 12px;
  }

  .btn.icon {
    width: 36px;
    height: 36px;
    flex: 0 0 36px;
  }

  .upload-card {
    padding: 12px 14px;
  }

  textarea {
    min-height: 240px;
    font-size: 16px;
    line-height: 1.55;
  }
}

@media (max-width: 420px) {
  .app {
    padding: 14px;
    gap: 14px;
  }

  .title {
    font-size: 17px;
  }

  .select-group {
    min-width: 100%;
  }

  .controls {
    align-items: stretch;
  }

  .btn.primary,
  .btn.ghost {
    width: 100%;
  }

  .upload-text {
    flex-basis: 100%;
  }

  textarea {
    min-height: 220px;
    font-size: 15.5px;
  }
}

.navbar {
  display: flex;
  justify-content: flex-start;
  padding: 12px 16px;
  background: linear-gradient(180deg, rgba(36, 36, 42, 0.9), rgba(31, 31, 35, 0.9));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.navbar:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
}

.navbar.inline {
  padding: 8px 10px;
  box-shadow: none;
  background: var(--panel-2);
  flex: 1 1 0;
  min-width: 0;
  margin-right: 12px;
  height: 38px;
  align-items: center;
}

.navbar.inline .nav-link {
  padding: 6px 10px;
  font-size: 12px;
}

.controls .select-group {
  flex: 0 0 160px;
}

.nav-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-start;
}

.nav-link {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 13px;
  padding: 8px 12px;
  border-radius: 10px;
  border: 1px solid transparent;
  letter-spacing: 0.2px;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease, border 0.15s ease, box-shadow 0.15s ease;
}

.nav-link:hover {
  background: var(--panel-2);
  color: var(--text);
  border-color: var(--border);
  transform: translateY(-1px);
}

.nav-link.active {
  color: var(--text);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  box-shadow: 0 0 14px rgba(106, 124, 255, 0.35);
}

.page-hero {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px 18px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.page-hero h1 {
  margin: 0;
  font-size: 22px;
}

.page-hero p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.alphabet-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
  border-color: #343440;
}

.card-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 0.2px;
}

.alphabet-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.alphabet-table th,
.alphabet-table td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}

.alphabet-table th {
  color: var(--muted);
  font-weight: 600;
}

.alphabet-table tr:last-child td {
  border-bottom: none;
}

.downloads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}

.download-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

.download-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 12px;
}

.download-meta span {
  padding: 2px 8px;
  background: var(--panel-2);
  border-radius: 999px;
  border: 1px solid var(--border);
}

.download-desc {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

@media (max-width: 900px) {
  .alphabet-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .nav-link {
    font-size: 12px;
    padding: 7px 10px;
  }

  .page-hero h1 {
    font-size: 20px;
  }
}
.file-actions .btn {
  display: flex;
  align-items: center;
  justify-content: center;
}
.file-actions .btn,
.file-actions .upload-inline {
  width: 100%;
}

.upload-inline .btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}