/* ==========================================================================
   DocuCraft PDF Studio - Main Stylesheet
   Modern, Ultra-Fast, Responsive & AdSense-Compliant Styling
   ========================================================================== */

:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --shadow-subtle: 0 1px 3px 0 rgb(0 0 0 / 0.05), 0 1px 2px -1px rgb(0 0 0 / 0.05);
  --shadow-card: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-elevated: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.04);
}

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--slate-800);
  background-color: #f8fafc;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--slate-100);
}
::-webkit-scrollbar-thumb {
  background: var(--slate-300);
  border-radius: 9999px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--slate-400);
}

/* Tab Navigation Buttons */
.tab-btn {
  position: relative;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
}

.tab-btn.active {
  color: var(--primary);
  background-color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 2px 8px -2px rgba(37, 99, 235, 0.12);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 12%;
  right: 12%;
  height: 2.5px;
  background-color: var(--primary);
  border-radius: 9999px;
}

/* Tab Pane Transitions */
.tab-pane {
  display: none;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.tab-pane.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

/* Inputs, Textareas, Selects */
input, textarea, select {
  font-family: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* AdSense Container Styles */
.adsense-placeholder {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px dashed var(--slate-300);
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
  border-radius: var(--radius-md);
  text-align: center;
  overflow: hidden;
}

.adsense-placeholder::before {
  content: 'ADVERTISEMENT';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: var(--slate-400);
}

.ad-banner-responsive {
  min-height: 90px;
  width: 100%;
  max-width: 970px;
  margin: 1.5rem auto;
}

.ad-native-responsive {
  min-height: 120px;
  width: 100%;
  margin: 2rem 0;
}

/* FAQ Accordion Styling */
.faq-item {
  border-bottom: 1px solid var(--slate-200);
  transition: background-color 0.2s ease;
}

.faq-button {
  width: 100%;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 0;
  background: none;
  border: none;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--slate-900);
  cursor: pointer;
  transition: color 0.15s ease;
}

.faq-button:hover {
  color: var(--primary);
}

.faq-icon {
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  color: var(--slate-400);
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
  color: var(--slate-600);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.open .faq-content {
  max-height: 500px;
  padding-bottom: 1.25rem;
}

/* Toast Notifications */
#toast-notification {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  background-color: var(--slate-900);
  color: #ffffff;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.15), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  font-size: 0.875rem;
  font-weight: 500;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

#toast-notification.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* Badge & Highlights */
.badge-privacy {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.75rem;
  background-color: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}

/* Print Overrides */
@media print {
  .no-print, header, footer, .adsense-placeholder, .tab-btn {
    display: none !important;
  }
}