@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

:root {
  /* Light Theme (goat.cash warm sand aesthetic) */
  --bg-primary: #FFFDEB;
  --bg-secondary: #F5F3E1;
  --card-bg: #FFFFFF;
  --card-border: rgba(15, 23, 42, 0.08);
  --card-hover-border: rgba(16, 185, 129, 0.4);
  --text-primary: #0F172A;
  --text-secondary: #64748B;
  --text-muted: #94A3B8;
  --accent: #10B981;
  --accent-hover: #059669;
  --accent-soft: rgba(16, 185, 129, 0.1);
  --accent-border: rgba(16, 185, 129, 0.25);
  --accent-glow: rgba(16, 185, 129, 0.2);
  --danger: #EF4444;
  --danger-soft: rgba(239, 68, 68, 0.1);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 9999px;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.06), 0 8px 10px -6px rgba(15, 23, 42, 0.02);
  --shadow-lg: 0 20px 35px -10px rgba(15, 23, 42, 0.08), 0 10px 15px -5px rgba(15, 23, 42, 0.03);
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --bg-primary: #0B0F17;
  --bg-secondary: #151D2A;
  --card-bg: #111827;
  --card-border: rgba(255, 255, 255, 0.08);
  --card-hover-border: rgba(16, 185, 129, 0.5);
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --accent: #10B981;
  --accent-hover: #34D399;
  --accent-soft: rgba(16, 185, 129, 0.16);
  --accent-border: rgba(16, 185, 129, 0.35);
  --accent-glow: rgba(16, 185, 129, 0.3);
  --danger: #F87171;
  --danger-soft: rgba(248, 113, 113, 0.16);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 35px -10px rgba(0, 0, 0, 0.5);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  padding-bottom: 2rem;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Layout */
.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

@media (min-width: 640px) {
  .container {
    padding: 2.5rem 1.5rem 4rem;
  }
}

.hidden {
  display: none !important;
}

/* Header Navbar */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding: 0.5rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-icon-wrap {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent) 0%, #059669 100%);
  display: grid;
  place-items: center;
  box-shadow: 0 4px 14px var(--accent-glow);
}

.brand-icon {
  width: 24px;
  height: 24px;
  fill: #FFFFFF;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.brand-badge {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Header Buttons */
.nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.nav-btn:hover {
  transform: translateY(-1px);
  border-color: var(--accent-border);
}

.nav-btn-primary {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
}

.nav-btn-primary:hover {
  background: var(--accent);
  color: #FFFFFF;
  border-color: var(--accent);
}

/* Hero Section */
.hero {
  text-align: center;
  margin-bottom: 2rem;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 0.85rem;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 0.75rem;
}

@media (min-width: 640px) {
  .hero-title {
    font-size: 2.75rem;
  }
}

.hero-subtitle {
  color: var(--text-secondary);
  font-size: 0.98rem;
  max-width: 520px;
  margin: 0 auto;
}

/* Main Card */
.main-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

@media (min-width: 640px) {
  .main-card {
    padding: 2rem;
  }
}

/* Tool Mode Segmented Control — modern pill, scrollable on mobile, equal 5-col on desktop */
.mode-toggle {
  display: flex;
  gap: 0.35rem;
  padding: 0.4rem;
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: 9999px;
  margin-bottom: 1.75rem;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  scroll-snap-type: x proximity;
  backdrop-filter: saturate(1.2) blur(6px);
}

.mode-toggle::-webkit-scrollbar { display: none; }

.mode-btn {
  flex: 1 0 auto;
  min-width: max-content;
  padding: 0.68rem 1rem;
  border: 1px solid transparent;
  border-radius: 9999px;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
  text-align: center;
  white-space: nowrap;
  scroll-snap-align: center;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.mode-btn:hover { color: var(--text-primary); background: color-mix(in srgb, var(--card-bg) 70%, transparent); }

.mode-btn:active { transform: scale(0.98); }

.mode-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.mode-btn.active {
  background: var(--card-bg);
  color: var(--accent);
  border-color: var(--card-border);
  box-shadow: var(--shadow-sm), 0 1px 4px rgba(15,23,42,0.08);
}

/* Desktop: equal 5 columns, no scroll */
@media (min-width: 768px) {
  .mode-toggle {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    overflow: visible;
  }
  .mode-btn { min-width: 0; padding: 0.7rem 0.5rem; }
}

/* Small phones: keep pill shape, reduce padding but stay scrollable */
@media (max-width: 380px) {
  .mode-toggle { padding: 0.3rem; gap: 0.25rem; }
  .mode-btn { padding: 0.6rem 0.8rem; font-size: 0.84rem; }
}

/* Drop Zone */
.drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2.25rem 1.5rem;
  border: 2px dashed var(--card-border);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
}

.drop-zone:hover,
.drop-zone.dragover,
.drop-zone:focus-visible {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: scale(1.008);
}

.drop-icon-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  display: grid;
  place-items: center;
  margin-bottom: 0.85rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast);
}

.drop-zone:hover .drop-icon-circle {
  transform: translateY(-2px);
  border-color: var(--accent-border);
}

.drop-icon {
  width: 26px;
  height: 26px;
  stroke: var(--accent);
  stroke-width: 2.2;
  fill: none;
}

.drop-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

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

/* File Info (Single File) */
.file-info {
  margin-top: 1.25rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.file-info-details {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  overflow: hidden;
}

.file-info-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-info-size {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.82rem;
}

/* File List (Multi-File Modes) */
.file-list {
  margin-top: 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  overflow: hidden;
}

.file-list-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--card-bg);
  border-bottom: 1px solid var(--card-border);
  transition: background-color var(--transition-fast);
}

.file-list-row:last-child {
  border-bottom: none;
}

.file-list-row.dragging {
  opacity: 0.4;
}

.file-list-row.drop-target {
  background: var(--accent-soft);
}

.file-list-grip {
  color: var(--text-muted);
  cursor: grab;
  font-size: 1.1rem;
}

.file-list-idx {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
  font-size: 0.75rem;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.file-list-badge {
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  flex-shrink: 0;
}

.file-list-badge.pdf {
  background: rgba(239, 68, 68, 0.12);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.file-list-badge.img {
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--accent-border);
}

.file-list-name {
  flex: 1;
  font-weight: 600;
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-list-size {
  color: var(--text-muted);
  font-size: 0.82rem;
  flex-shrink: 0;
}

.file-list-remove {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: none;
  background: var(--danger-soft);
  color: var(--danger);
  font-size: 1.1rem;
  display: grid;
  place-items: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.file-list-remove:hover {
  background: var(--danger);
  color: #FFFFFF;
}

/* Controls & Options */
.controls {
  margin-top: 1.5rem;
  border: none;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.controls legend {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.preset-option {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--card-border);
  background: var(--bg-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.preset-option:hover {
  border-color: var(--card-hover-border);
}

.preset-option:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.preset-option input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
}

.preset-info {
  display: flex;
  flex-direction: column;
}

.preset-info strong {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.preset-info small {
  color: var(--text-secondary);
  font-size: 0.82rem;
}

/* Select Controls */
.control-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem;
}

.control-row select {
  padding: 0.6rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--card-border);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  outline: none;
  cursor: pointer;
}

.control-row select:focus {
  border-color: var(--accent);
}

.control-row .check {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.control-row .check input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.control-hint {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

/* Action Button */
.compress-btn {
  margin-top: 1.75rem;
  width: 100%;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-pill);
  border: none;
  background: var(--accent);
  color: #FFFFFF;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  cursor: pointer;
  box-shadow: 0 8px 20px var(--accent-glow);
  transition: all var(--transition-fast);
}

.compress-btn:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 12px 24px var(--accent-glow);
}

.compress-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

/* Progress indicator */
.progress {
  margin-top: 1.25rem;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2.5px solid var(--accent-soft);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

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

/* Status message */
.status {
  margin-top: 1.25rem;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--bg-secondary);
  color: var(--text-secondary);
}

.status.error {
  background: var(--danger-soft);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.status.success {
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--accent-border);
}

/* Result Section */
.result {
  margin-top: 1.75rem;
  padding-top: 1.75rem;
  border-top: 1px dashed var(--card-border);
}

.result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.result-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--accent);
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.result-cell {
  background: var(--bg-primary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.result-label {
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.result-value {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--text-primary);
}

.result-note {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
}

.result-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.download-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-pill);
  background: var(--accent);
  color: #FFFFFF;
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.95rem;
  box-shadow: 0 6px 16px var(--accent-glow);
  transition: all var(--transition-fast);
}

.download-link:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.download-link.alt {
  background: var(--text-primary);
  color: var(--bg-primary);
  box-shadow: var(--shadow-sm);
}

.download-link.alt:hover {
  background: var(--accent);
  color: #FFFFFF;
}

/* Image grid (PDF -> Image) */
.image-grid {
  margin-top: 1.25rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 0.75rem;
  max-height: 340px;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.image-cell {
  background: var(--bg-primary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  text-decoration: none;
  color: var(--text-primary);
  font-size: 0.75rem;
  font-weight: 600;
  transition: border-color var(--transition-fast);
}

.image-cell:hover {
  border-color: var(--accent);
}

.image-cell img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: #FFFFFF;
}

/* Privacy Footer */
.footer {
  margin-top: 2.5rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}

.footer-shield {
  width: 16px;
  height: 16px;
  stroke: var(--accent);
  stroke-width: 2;
  fill: none;
}

/* PWA Update Toast Notification */
.update-toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--card-bg);
  color: var(--text-primary);
  border: 1px solid var(--accent);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.25rem;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.25), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
  from {
    transform: translateY(100%) scale(0.95);
    opacity: 0;
  }
  to {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

.update-toast-content {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
}