/* ============================================================
   Design Tokens
   ============================================================ */
:root {
  --bg:          #0b0d14;
  --bg-card:     #12151f;
  --bg-surface:  #191d2b;
  --bg-input:    #1e2233;
  --border:      rgba(255,255,255,0.07);
  --border-focus:rgba(130,100,255,0.6);

  --accent:      #7c5cfc;
  --accent-2:    #a78bfa;
  --accent-glow: rgba(124,92,252,0.35);
  --cyan:        #22d3ee;
  --success:     #34d399;
  --error:       #f87171;
  --warning:     #fbbf24;

  --text-primary:   #f1f5f9;
  --text-secondary: #8892a4;
  --text-muted:     #4b5568;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;

  --shadow-card: 0 24px 64px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.04);
  --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}


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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ============================================================
   Animated Background Orbs
   ============================================================ */
.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  animation: float 8s ease-in-out infinite;
}
.orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(124,92,252,0.18), transparent 70%);
  top: -200px; left: -150px;
  animation-delay: 0s;
}
.orb-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(34,211,238,0.12), transparent 70%);
  bottom: -150px; right: -100px;
  animation-delay: 3s;
}
.orb-3 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(167,139,250,0.1), transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  animation-delay: 6s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50%       { transform: translateY(-30px) scale(1.05); }
}
.orb-3 {
  animation: floatCenter 10s ease-in-out infinite;
}
@keyframes floatCenter {
  0%, 100% { transform: translate(-50%,-50%) scale(1); }
  50%       { transform: translate(-50%, calc(-50% - 20px)) scale(1.08); }
}

/* ============================================================
   App Layout
   ============================================================ */
.app-wrapper {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 20px 40px;
  position: relative;
  z-index: 1;
}

/* ============================================================
   Header
   ============================================================ */
.header {
  text-align: center;
  margin-bottom: 36px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.logo-icon {
  width: 42px; height: 42px;
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  box-shadow: 0 0 24px var(--accent-glow);
}

.logo-text {
  font-size: 1.75rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--accent-2), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.tagline {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 400;
}

/* ============================================================
   Main Card
   ============================================================ */
.main-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ============================================================
   Input Section
   ============================================================ */
.input-label {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: 10px;
  cursor: default;
}

.input-group {
  display: flex;
  gap: 10px;
}

.url-input {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.93rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.url-input::placeholder { color: var(--text-muted); }
.url-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(124,92,252,0.15);
}

.extract-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  background: linear-gradient(135deg, var(--accent), #5b3fc9);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  font-family: inherit;
  font-size: 0.93rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
  white-space: nowrap;
  box-shadow: 0 4px 20px var(--accent-glow);
}
.extract-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 8px 28px var(--accent-glow);
}
.extract-btn:active:not(:disabled) { transform: translateY(0); }
.extract-btn:disabled { opacity: 0.55; cursor: not-allowed; }

.input-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 8px;
}

/* ============================================================
   Divider
   ============================================================ */
.section-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--text-muted);
  font-size: 0.8rem;
}
.section-divider::before,
.section-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ============================================================
   Drop Zone
   ============================================================ */
.drop-zone {
  border: 2px dashed rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 36px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  background: transparent;
}
.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--accent);
  background: rgba(124,92,252,0.06);
}

.drop-zone-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  pointer-events: none;
}

.drop-icon {
  width: 58px; height: 58px;
  background: var(--bg-surface);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  margin-bottom: 4px;
  transition: color var(--transition), background var(--transition);
}
.drop-zone:hover .drop-icon,
.drop-zone.drag-over .drop-icon {
  color: var(--accent-2);
  background: rgba(124,92,252,0.15);
}

.drop-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
}
.drop-text kbd {
  display: inline-block;
  padding: 1px 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.78rem;
  font-family: inherit;
  color: var(--text-secondary);
}
.drop-subtext {
  color: var(--text-muted);
  font-size: 0.78rem;
}

/* ============================================================
   Preview Section
   ============================================================ */
.preview-section { display: flex; flex-direction: column; gap: 12px; }

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.preview-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.clear-btn {
  display: flex; align-items: center; gap: 5px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.78rem;
  padding: 4px 10px;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
.clear-btn:hover { border-color: var(--error); color: var(--error); }

.preview-img-wrap {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  max-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.preview-img {
  max-width: 100%;
  max-height: 320px;
  object-fit: contain;
  display: block;
}

/* ============================================================
   Progress Section
   ============================================================ */
.progress-section { display: flex; flex-direction: column; gap: 10px; }

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

.spinner {
  width: 18px; height: 18px;
  border: 2px solid rgba(124,92,252,0.25);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

.progress-label {
  flex: 1;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.progress-pct {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-2);
  min-width: 36px;
  text-align: right;
}

.progress-track {
  height: 5px;
  background: var(--bg-surface);
  border-radius: 999px;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  border-radius: 999px;
  transition: width 0.3s ease;
}

/* ============================================================
   Error Banner
   ============================================================ */
.error-banner {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: rgba(248,113,113,0.08);
  border: 1px solid rgba(248,113,113,0.25);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--error);
  font-size: 0.875rem;
  line-height: 1.5;
}
.error-banner svg { flex-shrink: 0; margin-top: 1px; }

/* ============================================================
   Results Section
   ============================================================ */
.results-section { display: flex; flex-direction: column; gap: 14px; }

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.results-title {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--success);
}

.results-actions {
  display: flex;
  gap: 8px;
}

.action-btn {
  display: flex; align-items: center; gap: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 500;
  padding: 6px 14px;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.action-btn:hover {
  border-color: var(--accent);
  color: var(--accent-2);
  background: rgba(124,92,252,0.1);
}
.action-btn.copied {
  border-color: var(--success);
  color: var(--success);
  background: rgba(52,211,153,0.1);
}

/* Confidence */
.confidence-bar-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}
.confidence-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
}
.confidence-track {
  flex: 1;
  height: 4px;
  background: var(--bg-surface);
  border-radius: 999px;
  overflow: hidden;
}
.confidence-bar {
  height: 100%;
  border-radius: 999px;
  transition: width 0.6s ease, background 0.4s ease;
}
.confidence-val {
  font-size: 0.75rem;
  font-weight: 600;
  min-width: 36px;
  text-align: right;
}

/* Text area */
.extracted-textarea {
  width: 100%;
  min-height: 200px;
  max-height: 400px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  color: var(--text-primary);
  font-family: 'Inter', monospace;
  font-size: 0.9rem;
  line-height: 1.7;
  resize: vertical;
  outline: none;
  transition: border-color var(--transition);
}
.extracted-textarea:focus { border-color: var(--border-focus); }

.results-footer {
  display: flex;
  justify-content: flex-end;
}
.char-count {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  text-align: center;
  margin-top: 28px;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.footer a {
  color: var(--accent-2);
  text-decoration: none;
  transition: color var(--transition);
}
.footer a:hover { color: var(--cyan); }

/* ============================================================
   Utility
   ============================================================ */
.hidden { display: none !important; }

/* ============================================================
   Animations
   ============================================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.results-section:not(.hidden),
.preview-section:not(.hidden) {
  animation: fadeInUp 0.35s ease forwards;
}

/* ============================================================
   Settings Bar
   ============================================================ */
.settings-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}
.settings-bar-left {
  display: flex;
  align-items: center;
  gap: 8px;
}
.settings-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}
.settings-toggle-btn {
  display: flex; align-items: center; gap: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 6px 12px;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
.settings-toggle-btn:hover {
  border-color: var(--accent);
  color: var(--accent-2);
}

/* Engine pills — in settings bar */
.engine-pill {
  display: inline-flex;
  align-items: center;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 999px;
  letter-spacing: 0.02em;
}
.engine-pill.engine-vision {
  background: rgba(52,211,153,0.12);
  color: var(--success);
  border: 1px solid rgba(52,211,153,0.3);
}
.engine-pill.engine-tesseract {
  background: rgba(124,92,252,0.12);
  color: var(--accent-2);
  border: 1px solid rgba(124,92,252,0.3);
}

/* Engine pills — in results header */
.engine-result-pill {
  display: inline-flex;
  align-items: center;
  font-size: 0.68rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  margin-left: 6px;
  letter-spacing: 0.02em;
}
.engine-result-pill.vision {
  background: rgba(52,211,153,0.12);
  color: var(--success);
  border: 1px solid rgba(52,211,153,0.25);
}
.engine-result-pill.tesseract {
  background: rgba(124,92,252,0.12);
  color: var(--accent-2);
  border: 1px solid rgba(124,92,252,0.25);
}

/* ============================================================
   Settings Panel
   ============================================================ */
.settings-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  animation: fadeInUp 0.25s ease forwards;
}

.settings-section {
  padding: 18px 20px;
}
.settings-section + .settings-section,
.settings-section-alt {
  border-top: 1px solid var(--border);
  background: rgba(0,0,0,0.15);
}

.settings-section-title {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.recommended-badge {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: linear-gradient(135deg, rgba(52,211,153,0.2), rgba(34,211,238,0.15));
  color: var(--success);
  border: 1px solid rgba(52,211,153,0.3);
  padding: 2px 7px;
  border-radius: 999px;
}
.fallback-badge {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: rgba(75,85,104,0.3);
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 2px 7px;
  border-radius: 999px;
}

.settings-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 12px;
}

.api-key-row {
  display: flex;
  gap: 8px;
  align-items: center;
}
.api-key-input {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 13px;
  color: var(--text-primary);
  font-family: monospace;
  font-size: 0.85rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.api-key-input::placeholder { color: var(--text-muted); }
.api-key-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(124,92,252,0.12);
}
.btn-save-key {
  background: linear-gradient(135deg, var(--accent), #5b3fc9);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 9px 16px;
  cursor: pointer;
  white-space: nowrap;
  transition: opacity var(--transition), box-shadow var(--transition);
}
.btn-save-key:hover { opacity: 0.9; box-shadow: 0 4px 14px var(--accent-glow); }

.btn-clear-key {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.82rem;
  padding: 9px 12px;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
.btn-clear-key:hover { border-color: var(--error); color: var(--error); }

.settings-hint {
  margin-top: 10px;
  font-size: 0.76rem;
  color: var(--text-muted);
}
.settings-hint a {
  color: var(--accent-2);
  text-decoration: none;
  transition: color var(--transition);
}
.settings-hint a:hover { color: var(--cyan); }

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 560px) {
  .app-wrapper { padding: 24px 14px 32px; }
  .main-card   { padding: 24px 18px; }
  .input-group { flex-direction: column; }
  .extract-btn { width: 100%; justify-content: center; }
  .logo-text   { font-size: 1.45rem; }
}