/* Unlock PDF - #3d85c6 */
:root {
  --ul-brand: #3d85c6;
  --ul-brand-dark: #2c6396;
  --ul-brand-light: #eaf4fb;
  --ul-brand-border: #b6d5f2;
  --ul-bg: #f4f8fc;
  --ul-surface: rgba(255, 255, 255, 0.92);
  --ul-solid: #ffffff;
  --ul-text: #1a1a1a;
  --ul-muted: #64748b;
  --ul-warn: #b45309;
  --ul-warn-bg: #fffbeb;
  --ul-success: #15803d;
  --ul-success-bg: #dcfce7;
  --ul-shadow: 0 14px 40px rgba(61, 133, 198, 0.15);
  --ul-radius: 18px;
  --ul-font: 'DM Sans', system-ui, sans-serif;
}

#tool-main {
  font-family: var(--ul-font);
  color: var(--ul-text);
  background: var(--ul-bg);
  background-image:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(61, 133, 198, 0.12), transparent),
    radial-gradient(ellipse 60% 40% at 90% 0%, rgba(91, 163, 224, 0.1), transparent);
  padding-bottom: 32px;
}

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

.ul-hero { text-align: center; margin-bottom: 20px; }
.ul-hero h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 800;
  color: var(--ul-brand);
  margin: 0 0 8px;
}
.ul-hero p { color: var(--ul-muted); font-size: 0.92rem; margin: 0 auto 10px; max-width: 500px; }
.ul-trust {
  display: inline-flex;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ul-brand-dark);
  background: var(--ul-brand-light);
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--ul-brand-border);
}

.ul-glass {
  background: var(--ul-surface);
  backdrop-filter: blur(12px);
  border: 1px solid var(--ul-brand-border);
  border-radius: var(--ul-radius);
  box-shadow: var(--ul-shadow);
  padding: 20px;
  margin-bottom: 16px;
}

.ul-drop {
  text-align: center;
  padding: 28px 20px;
  cursor: pointer;
  border: 2px dashed var(--ul-brand);
  transition: background 0.15s, border-color 0.15s;
}
.ul-drop:hover, .ul-drop:focus-visible, .ul-drop.is-dragover {
  background: var(--ul-brand-light);
  border-color: var(--ul-brand-dark);
  outline: none;
}
.ul-drop.has-file { padding: 16px; border-style: solid; }
.ul-drop-icon { font-size: 2.2rem; margin-bottom: 8px; }
.ul-drop h2 { font-size: 1rem; font-weight: 700; margin: 0 0 4px; color: var(--ul-brand-dark); }
.ul-drop p { font-size: 0.85rem; color: var(--ul-muted); margin: 0; }

.ul-file-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--ul-solid);
  border: 1px solid var(--ul-brand-border);
  border-radius: 12px;
  margin-bottom: 14px;
}
.ul-file-icon { font-size: 1.8rem; flex-shrink: 0; }
.ul-file-meta { flex: 1; min-width: 0; }
.ul-file-name {
  font-size: 0.88rem;
  font-weight: 700;
  margin: 0 0 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ul-file-sub { font-size: 0.78rem; color: var(--ul-muted); }
.ul-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 999px;
  margin-top: 4px;
}
.ul-badge--locked { background: #fef3c7; color: #b45309; }
.ul-badge--open { background: var(--ul-success-bg); color: var(--ul-success); }

.ul-field { margin-bottom: 14px; }
.ul-field label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ul-brand-dark);
  margin-bottom: 6px;
}
.ul-pass-wrap {
  display: flex;
  gap: 8px;
  align-items: stretch;
}
.ul-pass-wrap input {
  flex: 1;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--ul-brand-border);
  font-size: 0.9rem;
  font-family: inherit;
}
.ul-pass-wrap input:focus {
  outline: none;
  border-color: var(--ul-brand);
  box-shadow: 0 0 0 3px rgba(61, 133, 198, 0.15);
}
.ul-hint { font-size: 0.75rem; color: var(--ul-muted); margin-top: 6px; line-height: 1.45; }

.ul-legal {
  font-size: 0.72rem;
  color: var(--ul-muted);
  background: var(--ul-warn-bg);
  border: 1px solid #fde68a;
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: 14px;
  line-height: 1.45;
}

.ul-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 20px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.92rem;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s;
}
.ul-btn--primary {
  background: var(--ul-brand);
  color: #fff;
  box-shadow: 0 4px 14px rgba(61, 133, 198, 0.28);
  width: 100%;
}
.ul-btn--primary:hover:not(:disabled) { background: var(--ul-brand-dark); }
.ul-btn--ghost {
  background: var(--ul-solid);
  border: 1px solid var(--ul-brand-border);
  color: var(--ul-brand-dark);
}
.ul-btn--ghost:hover:not(:disabled) { background: var(--ul-brand-light); }
.ul-btn:disabled { opacity: 0.55; cursor: not-allowed; }

.ul-progress { padding: 12px 0 0; }
.ul-progress[hidden], .ul-workspace[hidden], .ul-success[hidden] { display: none !important; }
.ul-bar {
  height: 6px;
  background: var(--ul-brand-light);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 8px;
}
.ul-bar span {
  display: block;
  height: 100%;
  background: var(--ul-brand);
  width: 0%;
  transition: width 0.2s;
}
.ul-progress-label { font-size: 0.82rem; font-weight: 600; color: var(--ul-brand-dark); }

.ul-success {
  text-align: center;
  padding: 24px 20px;
}
.ul-success-icon {
  width: 48px; height: 48px; margin: 0 auto 12px;
  border-radius: 50%;
  background: var(--ul-success-bg);
  color: var(--ul-success);
  font-size: 1.5rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ul-success-stats {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--ul-muted);
  margin: 12px 0 16px;
}
.ul-success-stats strong { display: block; font-size: 1rem; color: var(--ul-text); }
.ul-success-actions { display: flex; flex-direction: column; gap: 8px; }

.ul-related {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
}
.ul-related a {
  display: block;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--ul-brand-border);
  background: var(--ul-surface);
  text-decoration: none;
  color: inherit;
  transition: background 0.15s;
}
.ul-related a:hover { background: var(--ul-brand-light); }
.ul-related strong { display: block; font-size: 0.82rem; color: var(--ul-brand-dark); }
.ul-related span { font-size: 0.72rem; color: var(--ul-muted); }

.ul-toast {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%) translateY(12px);
  padding: 10px 16px;
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.25s, transform 0.25s;
}
.ul-toast.is-visible { opacity: 1; transform: translateX(-50%) translateY(0); }
.ul-toast--success { background: #166534; color: #fff; }
.ul-toast--warning { background: #b45309; color: #fff; }
.ul-toast--error { background: #b91c1c; color: #fff; }

.ul-success { scroll-margin-top: calc(var(--header-h, 72px) + 16px); }