/* PDF Splitter - #3d85c6 brand */
:root {
  --ps-brand: #3d85c6;
  --ps-brand-dark: #2c6396;
  --ps-brand-light: #eaf4fb;
  --ps-brand-border: #b6d5f2;
  --ps-bg: #f4f8fc;
  --ps-surface: rgba(255, 255, 255, 0.9);
  --ps-solid: #ffffff;
  --ps-text: #1a1a1a;
  --ps-muted: #64748b;
  --ps-success: #15803d;
  --ps-shadow: 0 14px 40px rgba(61, 133, 198, 0.16);
  --ps-radius: 18px;
  --ps-font: 'DM Sans', system-ui, sans-serif;
}

#tool-main {
  font-family: var(--ps-font);
  color: var(--ps-text);
  background: var(--ps-bg);
  background-image:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(61, 133, 198, 0.14), transparent),
    radial-gradient(ellipse 50% 40% at 100% 0%, rgba(91, 163, 224, 0.1), transparent);
  padding-bottom: 32px;
}

.ps-wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 16px;
}

.ps-hero {
  text-align: center;
  margin-bottom: 16px;
}

.ps-hero h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 800;
  color: var(--ps-brand);
  margin: 0 0 8px;
}

.ps-hero p {
  color: var(--ps-muted);
  font-size: 0.92rem;
  margin: 0 auto 10px;
  max-width: 480px;
}

.ps-trust {
  display: inline-flex;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ps-brand-dark);
  background: var(--ps-brand-light);
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--ps-brand-border);
}

.ps-glass {
  background: var(--ps-surface);
  backdrop-filter: blur(12px);
  border: 1px solid var(--ps-brand-border);
  border-radius: var(--ps-radius);
  box-shadow: var(--ps-shadow);
  padding: 18px;
  margin-bottom: 12px;
}

.ps-drop {
  text-align: center;
  padding: 28px 20px;
  cursor: pointer;
  border: 2px dashed var(--ps-brand);
  transition: background 0.15s, border-color 0.15s;
}

.ps-drop:hover,
.ps-drop:focus-visible,
.ps-drop.is-dragover {
  background: var(--ps-brand-light);
  border-color: var(--ps-brand-dark);
  outline: none;
}

.ps-drop.has-file {
  padding: 14px;
  border-style: solid;
}

.ps-drop-icon {
  font-size: 2.2rem;
  margin-bottom: 8px;
}

.ps-drop h2 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 4px;
  color: var(--ps-brand-dark);
}

.ps-drop p {
  font-size: 0.85rem;
  color: var(--ps-muted);
  margin: 0;
}

.ps-file-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--ps-solid);
  border: 1px solid var(--ps-brand-border);
  border-radius: 12px;
  margin-bottom: 14px;
}

.ps-file-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
}

.ps-file-meta {
  flex: 1;
  min-width: 0;
}

.ps-file-name {
  margin: 0;
  font-weight: 600;
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ps-file-sub {
  font-size: 0.78rem;
  color: var(--ps-muted);
}

.ps-icon-btn {
  border: 1px solid var(--ps-brand-border);
  background: var(--ps-solid);
  border-radius: 8px;
  width: 32px;
  height: 32px;
  cursor: pointer;
  color: var(--ps-brand-dark);
  font-size: 1.1rem;
}

.ps-modes {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.ps-modes button {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--ps-brand-border);
  background: var(--ps-solid);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ps-brand-dark);
  cursor: pointer;
}

.ps-modes button.active {
  background: var(--ps-brand);
  border-color: var(--ps-brand);
  color: #fff;
}

.ps-panel[hidden] {
  display: none !important;
}

.ps-field label {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--ps-brand-dark);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.ps-input {
  width: 100%;
  padding: 10px 12px;
  font-size: 0.95rem;
  border: 1.5px solid var(--ps-brand-border);
  border-radius: 10px;
  background: #f7fbff;
  box-sizing: border-box;
}

.ps-input:focus {
  border-color: var(--ps-brand);
  outline: none;
  box-shadow: 0 0 0 2px var(--ps-brand-light);
}

.ps-hint {
  font-size: 0.75rem;
  color: var(--ps-muted);
  margin: 6px 0 0;
}

.ps-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.ps-chips button {
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--ps-brand-border);
  background: var(--ps-solid);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ps-brand-dark);
  cursor: pointer;
}

.ps-check {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  font-size: 0.85rem;
}

.ps-check input {
  accent-color: var(--ps-brand);
}

.ps-page-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(52px, 1fr));
  gap: 6px;
  max-height: 180px;
  overflow-y: auto;
  padding: 8px;
  border: 1px solid var(--ps-brand-border);
  border-radius: 10px;
  background: #f7fbff;
  margin-bottom: 8px;
}

.ps-page-grid label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 6px 4px;
  border-radius: 8px;
  border: 1px solid var(--ps-brand-border);
  background: var(--ps-solid);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  margin: 0;
  text-transform: none;
}

.ps-page-grid label:has(input:checked) {
  background: var(--ps-brand-light);
  border-color: var(--ps-brand);
  color: var(--ps-brand-dark);
}

.ps-page-actions {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

.ps-page-actions button {
  padding: 5px 10px;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 8px;
  border: 1px solid var(--ps-brand-border);
  background: var(--ps-solid);
  color: var(--ps-brand-dark);
  cursor: pointer;
}

.ps-split-row {
  margin-top: 14px;
}

.ps-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.ps-btn--primary {
  background: var(--ps-brand);
  color: #fff;
  width: 100%;
  box-shadow: 0 6px 18px rgba(61, 133, 198, 0.35);
}

.ps-btn--primary:hover:not(:disabled) {
  background: var(--ps-brand-dark);
}

.ps-btn--primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.ps-btn--ghost {
  background: var(--ps-solid);
  border: 1px solid var(--ps-brand-border);
  color: var(--ps-muted);
}

.ps-btn--lg {
  padding: 14px 24px;
  font-size: 1rem;
}

.ps-progress {
  margin-top: 12px;
}

.ps-progress[hidden] {
  display: none !important;
}

.ps-progress-bar {
  height: 8px;
  background: var(--ps-brand-light);
  border-radius: 999px;
  overflow: hidden;
}

.ps-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--ps-brand), #5ba3e0);
  transition: width 0.2s;
}

.ps-progress-label {
  font-size: 0.8rem;
  color: var(--ps-muted);
  text-align: center;
  margin: 6px 0 0;
}

.ps-result {
  text-align: center;
  border-color: #86efac;
  background: linear-gradient(180deg, #f0fdf4 0%, var(--ps-surface) 100%);
  margin-top: 14px;
  padding: 16px;
}

.ps-result[hidden] {
  display: none !important;
}

.ps-result-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--ps-success);
  background: #dcfce7;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 8px;
}

.ps-result h2 {
  font-size: 1.1rem;
  color: var(--ps-brand-dark);
  margin: 0 0 8px;
}

.ps-result p {
  font-size: 0.88rem;
  color: var(--ps-muted);
  margin: 0 0 14px;
}

.ps-download-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.ps-download-row .ps-btn--primary {
  width: auto;
  min-width: 160px;
  flex: 1 1 180px;
}

.ps-download-row .ps-btn--ghost {
  flex: 1 1 160px;
}

.ps-related {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
  margin-top: 10px;
}

.ps-related a {
  display: block;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--ps-brand-border);
  background: var(--ps-solid);
  text-decoration: none;
  color: inherit;
}

.ps-related strong {
  display: block;
  font-size: 0.88rem;
  color: var(--ps-brand-dark);
}

.ps-related span {
  font-size: 0.75rem;
  color: var(--ps-muted);
}

.ps-toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  padding: 12px 18px;
  border-radius: 10px;
  font-size: 0.88rem;
  font-weight: 600;
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.25s, transform 0.25s;
  max-width: 90vw;
}

.ps-toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.ps-toast--success { background: #166534; color: #fff; }
.ps-toast--error { background: #b91c1c; color: #fff; }
.ps-toast--warning { background: #b45309; color: #fff; }