/**
 * UniDoc Metadata Analyzer — Styles
 * Modern dark theme matching watermark/editor tools (Material 3)
 * NO black text anywhere.
 */

/* ========================================
   CSS VARIABLES & ROOT STYLES
   ======================================== */

:root {
  /* Primary Theme - Matching other UniDoc tools */
  --primary: #7C4DFF;
  --primary-light: #B388FF;
  --primary-dark: #5E35B1;
  --secondary: #00E5FF;
  --secondary-dark: #00B8D4;
  --tertiary: #FF4081;
  --accent-purple: #E040FB;
  --accent-amber: #FFB300;
  --accent-cyan: #00BCD4;
  
  /* Tool-specific accent */
  --tool-accent: #7C4DFF;
  --tool-accent-dark: #5E35B1;
  
  /* Surfaces */
  --surface: rgba(26, 27, 33, 0.7);
  --surface-solid: #1A1B21;
  --surface-container: #252731;
  --surface-light: #252731;
  --surface-lighter: #2e3040;
  --background: #0D0E12;
  
  /* Text */
  --text: #FFFFFF;
  --text-secondary: rgba(255, 255, 255, 0.60);
  --text-muted: rgba(255, 255, 255, 0.40);
  
  /* Borders */
  --border: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.12);
  --outline: rgba(255, 255, 255, 0.24);
  --outline-var: rgba(255, 255, 255, 0.10);
  
  /* Border Radius */
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 8px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 8px 24px rgba(124, 77, 255, 0.3);
  
  /* Transitions */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  
  /* Legacy color aliases for compatibility */
  --color-bg: #0D0E12;
  --color-bg-secondary: #1A1B21;
  --color-bg-tertiary: #252731;
  --color-surface: #1A1B21;
  --color-surface-hover: #2e3040;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-light: rgba(255, 255, 255, 0.12);
  --color-text: #FFFFFF;
  --color-text-secondary: rgba(255, 255, 255, 0.60);
  --color-text-muted: rgba(255, 255, 255, 0.40);
  --color-primary: #7C4DFF;
  --color-primary-hover: #B388FF;
  --color-primary-bg: rgba(124, 77, 255, 0.12);
  
  /* Status Colors */
  --color-safe: #4CAF50;
  --color-safe-bg: rgba(76, 175, 80, 0.12);
  --color-safe-border: rgba(76, 175, 80, 0.35);
  --safe-color: #4CAF50;
  --safe-bg: rgba(76, 175, 80, 0.12);
  
  --color-moderate: #FFB300;
  --color-moderate-bg: rgba(255, 179, 0, 0.12);
  --color-moderate-border: rgba(255, 179, 0, 0.35);
  --caution-color: #FFB300;
  --caution-bg: rgba(255, 179, 0, 0.12);
  
  --color-risky: #EF5350;
  --color-risky-bg: rgba(239, 83, 80, 0.12);
  --color-risky-border: rgba(239, 83, 80, 0.35);
  --risky-color: #EF5350;
  --risky-bg: rgba(239, 83, 80, 0.12);
}

/* ========================================
   BASE STYLES
   ======================================== */

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  background: var(--background);
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-light);
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  color: var(--text);
}

input, select, textarea {
  font-family: inherit;
  color: var(--text);
}

/* ========================================
   LAYOUT
   ======================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.hidden {
  display: none !important;
}

.app-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: var(--spacing-lg);
  min-height: calc(100vh - 200px);
  padding: var(--spacing-lg) 0;
}

@media (max-width: 900px) {
  .app-layout {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   ANIMATED BACKGROUND
   ======================================== */

.bg-animation {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

.bg-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(124, 77, 255, 0.15), transparent),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(0, 229, 255, 0.08), transparent),
    radial-gradient(ellipse 50% 30% at 10% 60%, rgba(255, 64, 129, 0.06), transparent);
}

.bg-particles {
  position: absolute;
  inset: 0;
}

.particle {
  position: absolute;
  width: 2px;
  height: 2px;
  background: rgba(124, 77, 255, 0.4);
  border-radius: 50%;
  animation: float linear infinite;
}

@keyframes float {
  0% { transform: translateY(100vh) scale(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

/* ========================================
   NAVBAR - Matching other UniDoc tools
   ======================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 14px 0;
  background: rgba(13, 14, 18, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
}

.nav-logo-img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.logo-text {
  color: var(--text);
}

.logo-accent {
  color: var(--primary);
}

.nav-links {
  display: flex;
  gap: 6px;
}

.nav-link {
  padding: 8px 16px;
  border-radius: var(--radius-xs);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
  background: rgba(124, 77, 255, 0.1);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--primary);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  transition: var(--transition);
  cursor: pointer;
}

.nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.nav-cta .material-icons-round {
  font-size: 18px;
}

.nav-toggle {
  display: none;
  color: var(--text);
  padding: 8px;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  background: rgba(13, 14, 18, 0.95);
  backdrop-filter: blur(20px);
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  z-index: 99;
  flex-direction: column;
  gap: 4px;
}

.mobile-menu.open {
  display: flex;
}

.mobile-link {
  padding: 12px 16px;
  border-radius: var(--radius-xs);
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}

.mobile-link:hover {
  color: var(--text);
  background: rgba(124, 77, 255, 0.1);
}

/* ========================================
   HERO SECTION - Matching other UniDoc tools
   ======================================== */

.page-content {
  padding-top: 100px;
}

.hero {
  padding: 60px 0 50px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(124, 77, 255, 0.12);
  border: 1px solid rgba(124, 77, 255, 0.25);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary-light);
  margin-bottom: 28px;
}

.hero-badge .material-icons-round {
  font-size: 18px;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: var(--text);
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--secondary), var(--tertiary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

/* ========================================
   DROP ZONE / UPLOAD CARD - Matching editor/watermark
   ======================================== */

.upload-card {
  position: relative;
  max-width: 720px;
  margin: 0 auto 40px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  overflow: hidden;
}

.drop-zone {
  position: relative;
  border: 2px dashed var(--border-light);
  border-radius: var(--radius);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
}

.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--primary);
  background: rgba(124, 77, 255, 0.06);
}

.drop-zone.processing {
  opacity: 0.7;
  pointer-events: none;
}

.drop-zone-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

.drop-icon {
  font-size: 64px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.drop-zone-content h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
}

.upload-hint {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.drop-zone-formats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: var(--spacing-md);
}

.format-tag {
  background: rgba(124, 77, 255, 0.12);
  color: var(--primary-light);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  border: 1px solid rgba(124, 77, 255, 0.25);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ========================================
   FILE LIST (SIDEBAR) - Enhanced styling
   ======================================== */

#file-list {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.file-list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--border);
  background: rgba(124, 77, 255, 0.04);
}

.file-list-header h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.file-count {
  background: rgba(124, 77, 255, 0.15);
  color: var(--primary-light);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.file-list-items {
  max-height: 500px;
  overflow-y: auto;
}

.file-list-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  cursor: pointer;
  transition: var(--transition);
  border-bottom: 1px solid var(--border);
}

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

.file-list-item:hover {
  background: rgba(124, 77, 255, 0.06);
}

.file-list-item.selected {
  background: rgba(124, 77, 255, 0.12);
  border-left: 3px solid var(--primary);
}

.file-item-icon {
  width: 36px;
  height: 36px;
  color: var(--primary-light);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(124, 77, 255, 0.12);
  border-radius: var(--radius-sm);
}

.file-item-icon svg {
  width: 20px;
  height: 20px;
}

.file-item-info {
  flex: 1;
  min-width: 0;
}

.file-item-name {
  display: block;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 0.9rem;
}

.file-item-meta {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.file-item-score {
  flex-shrink: 0;
}

.score-badge {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.score-badge.safe {
  background: var(--color-safe-bg);
  color: var(--color-safe);
  border: 1px solid var(--color-safe-border);
}

.score-badge.moderate {
  background: var(--color-moderate-bg);
  color: var(--color-moderate);
  border: 1px solid var(--color-moderate-border);
}

.score-badge.risky {
  background: var(--color-risky-bg);
  color: var(--color-risky);
  border: 1px solid var(--color-risky-border);
}

.score-loading {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.score-error {
  color: var(--color-risky);
  font-size: 0.8rem;
}

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

/* ========================================
   DETAIL PANEL - Enhanced styling
   ======================================== */

#detail-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  min-height: 400px;
  backdrop-filter: blur(10px);
}

/* ========================================
   FILE SUMMARY - Enhanced styling
   ======================================== */

.file-summary {
  margin-bottom: var(--spacing-lg);
}

.file-summary-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border);
}

.file-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.file-icon {
  width: 52px;
  height: 52px;
  color: var(--primary-light);
  background: rgba(124, 77, 255, 0.12);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}

.file-icon svg {
  width: 28px;
  height: 28px;
}

.file-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text);
}

.file-meta {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.privacy-score-badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius);
  font-weight: 600;
}

.privacy-score-badge.safe {
  background: var(--color-safe-bg);
  border: 1px solid var(--color-safe-border);
}

.privacy-score-badge.moderate {
  background: var(--color-moderate-bg);
  border: 1px solid var(--color-moderate-border);
}

.privacy-score-badge.risky {
  background: var(--color-risky-bg);
  border: 1px solid var(--color-risky-border);
}

.score-value {
  font-size: 1.5rem;
}

.score-max {
  color: var(--color-text-muted);
}

.score-label {
  margin-left: var(--spacing-sm);
  font-size: 0.9rem;
}

.privacy-score-badge.safe .score-value,
.privacy-score-badge.safe .score-label { color: var(--color-safe); }

.privacy-score-badge.moderate .score-value,
.privacy-score-badge.moderate .score-label { color: var(--color-moderate); }

.privacy-score-badge.risky .score-value,
.privacy-score-badge.risky .score-label { color: var(--color-risky); }

/* Summary Points */
.file-summary-body {
  padding-top: var(--spacing-md);
}

.file-summary-body h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.summary-points {
  list-style: none;
}

.summary-point {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
}

.point-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.point-icon svg {
  width: 100%;
  height: 100%;
}

.summary-point.danger .point-icon { color: var(--color-risky); }
.summary-point.warning .point-icon { color: var(--color-moderate); }
.summary-point.safe .point-icon { color: var(--color-safe); }
.summary-point.info .point-icon { color: var(--text-secondary); }

/* ========================================
   FILE DETAIL
   ======================================== */

.file-detail-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

@media (max-width: 1100px) {
  .file-detail-body {
    grid-template-columns: 1fr;
  }
}

.detail-column {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* ========================================
   PRIVACY CARD - Enhanced glassmorphism
   ======================================== */

.privacy-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.privacy-card.safe { border-color: var(--color-safe-border); box-shadow: 0 4px 20px rgba(76, 175, 80, 0.1); }
.privacy-card.moderate { border-color: var(--color-moderate-border); box-shadow: 0 4px 20px rgba(255, 179, 0, 0.1); }
.privacy-card.risky { border-color: var(--color-risky-border); box-shadow: 0 4px 20px rgba(239, 83, 80, 0.15); }

.privacy-card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--spacing-md);
}

.score-ring {
  width: 100px;
  height: 100px;
  flex-shrink: 0;
}

.score-ring svg {
  width: 100%;
  height: 100%;
}

.score-details h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.score-details .score-label {
  font-size: 1.25rem;
  font-weight: 700;
  margin-left: 0;
}

.privacy-card.safe .score-details .score-label { color: var(--color-safe); }
.privacy-card.moderate .score-details .score-label { color: var(--color-moderate); }
.privacy-card.risky .score-details .score-label { color: var(--color-risky); }

/* Privacy Warnings */
.privacy-warnings,
.privacy-explanations,
.privacy-recommendations {
  margin-top: var(--spacing-md);
}

.privacy-warnings h4,
.privacy-explanations h4,
.privacy-recommendations h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.privacy-warnings ul,
.privacy-explanations ul,
.privacy-recommendations ul {
  list-style: none;
}

.warning-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
}

.warning-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
}

.warning-icon svg {
  width: 100%;
  height: 100%;
}

.warning-item.danger .warning-icon { color: var(--color-risky); }
.warning-item.warning .warning-icon { color: var(--color-moderate); }

.explanation-item {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--border);
}

.explanation-item:last-child {
  border-bottom: none;
}

.explanation-icon {
  width: 18px;
  height: 18px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.explanation-icon svg {
  width: 100%;
  height: 100%;
}

.explanation-content strong {
  display: block;
  margin-bottom: 2px;
  color: var(--text);
}

.explanation-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.privacy-recommendations li {
  padding: var(--spacing-xs) 0;
  padding-left: var(--spacing-md);
  position: relative;
  color: var(--text-secondary);
}

.privacy-recommendations li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--primary);
}

/* ========================================
   METADATA CATEGORIES - Enhanced styling
   ======================================== */

.metadata-categories {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.metadata-category {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}

.metadata-category:hover {
  border-color: var(--border-light);
}

.metadata-category.sensitive-category {
  border-color: var(--color-moderate-border);
}

.category-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  background: rgba(124, 77, 255, 0.04);
  border-bottom: 1px solid var(--border);
}

.category-icon {
  width: 22px;
  height: 22px;
  color: var(--primary-light);
}

.category-icon svg {
  width: 100%;
  height: 100%;
}

.category-header h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}

.category-content {
  padding: var(--spacing-sm) var(--spacing-md);
}

.metadata-table {
  width: 100%;
  border-collapse: collapse;
}

.metadata-table tr {
  border-bottom: 1px solid var(--border);
}

.metadata-table tr:last-child {
  border-bottom: none;
}

.metadata-table td {
  padding: var(--spacing-sm) var(--spacing-sm);
  vertical-align: top;
}

.meta-key {
  font-weight: 500;
  color: var(--text-secondary);
  width: 40%;
  font-size: 0.9rem;
}

.meta-value {
  color: var(--text);
  word-break: break-word;
  font-size: 0.9rem;
}

.sensitive-row {
  background: var(--color-risky-bg);
}

.sensitive-row .meta-value {
  color: var(--color-risky);
}

.meta-warning {
  width: 24px;
  text-align: center;
}

.meta-warning svg {
  width: 16px;
  height: 16px;
  color: var(--color-risky);
}

/* ========================================
   CLEANER UI - Enhanced styling
   ======================================== */

.cleaner-ui {
  background: var(--surface);
  border-radius: var(--radius);
  padding: var(--spacing-lg);
  border: 1px solid var(--border);
  margin-top: var(--spacing-lg);
  backdrop-filter: blur(10px);
}

.cleaner-ui h4 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text);
}

.cleaner-ui h4 svg {
  width: 20px;
  height: 20px;
  color: var(--primary);
}

.cleaner-ui > p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

.cleaner-options {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.cleaner-ui.unavailable {
  opacity: 0.6;
}

/* Progress */
.cleaner-progress {
  text-align: center;
  padding: var(--spacing-md);
}

.progress-bar {
  height: 6px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--spacing-sm);
}

.progress-fill {
  height: 100%;
  width: 0;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  animation: progress 2s ease-in-out infinite;
}

@keyframes progress {
  0% { width: 0; }
  50% { width: 80%; }
  100% { width: 100%; }
}

.progress-text {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

/* Result */
.cleaner-result {
  text-align: center;
  padding: var(--spacing-md);
}

.result-text {
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

.result-text.success {
  color: var(--color-safe);
}

.result-text.error {
  color: var(--color-risky);
}

/* ========================================
   MAP PREVIEW (Google Maps iframe)
   ======================================== */

.map-preview {
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  border: 2px solid var(--color-risky);
  margin: var(--spacing-lg) 0;
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.15);
}

.map-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}

.map-preview-header h4 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-risky);
  margin: 0;
}

.map-preview-header h4 svg {
  width: 22px;
  height: 22px;
}

.map-iframe-container {
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--spacing-md);
  border: 1px solid var(--color-border);
}

.map-iframe-container iframe {
  display: block;
  width: 100%;
  min-height: 300px;
}

.map-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.map-coords {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: 'SF Mono', 'Fira Code', monospace;
  color: var(--color-risky);
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--color-risky-bg);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-md);
  margin: 0;
}

.map-coords svg {
  width: 16px;
  height: 16px;
}

.map-links {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.map-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

.map-link:hover {
  color: var(--color-primary-hover);
}

.map-warning {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  background: var(--color-risky-bg);
  border: 1px solid var(--color-risky-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
}

.map-warning-icon {
  width: 20px;
  height: 20px;
  color: var(--color-risky);
  flex-shrink: 0;
  margin-top: 2px;
}

.map-warning-icon svg {
  width: 100%;
  height: 100%;
}

.map-warning p {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  line-height: 1.5;
  margin: 0;
}

/* ========================================
   RISK BADGES
   ======================================== */

.risk-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.risk-badge-high {
  background: var(--color-risky-bg);
  color: var(--color-risky);
  border: 1px solid var(--color-risky-border);
  animation: pulse-red 2s ease-in-out infinite;
}

.risk-badge-medium {
  background: var(--color-moderate-bg);
  color: var(--color-moderate);
  border: 1px solid var(--color-moderate-border);
}

@keyframes pulse-red {
  0%, 100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.3); }
  50% { box-shadow: 0 0 8px 2px rgba(239, 68, 68, 0.2); }
}

/* ========================================
   RISK-LEVEL CATEGORY HIGHLIGHTING
   ======================================== */

.metadata-category.risk-high {
  border-color: var(--color-risky);
  box-shadow: 0 0 12px rgba(239, 68, 68, 0.12);
}

.metadata-category.risk-high .category-header {
  background: var(--color-risky-bg);
  border-bottom-color: var(--color-risky-border);
}

.metadata-category.risk-high .category-icon {
  color: var(--color-risky);
}

.metadata-category.risk-high .category-header h4 {
  color: var(--color-risky);
}

.metadata-category.risk-medium {
  border-color: var(--color-moderate-border);
  box-shadow: 0 0 8px rgba(245, 158, 11, 0.08);
}

.metadata-category.risk-medium .category-header {
  background: var(--color-moderate-bg);
  border-bottom-color: var(--color-moderate-border);
}

.metadata-category.risk-medium .category-icon {
  color: var(--color-moderate);
}

.metadata-category.risk-medium .category-header h4 {
  color: var(--color-moderate);
}

.metadata-category.risk-low {
  border-color: var(--color-border-light);
}

.metadata-category.risk-none {
  border-color: var(--color-border);
}

/* Risk-level row highlighting */
.risk-row-high {
  background: var(--color-risky-bg);
}

.risk-row-high .meta-value {
  color: var(--color-risky);
  font-weight: 500;
}

.risk-row-medium {
  background: var(--color-moderate-bg);
}

.risk-row-medium .meta-value {
  color: var(--color-moderate);
}

/* ========================================
   BUTTONS - Matching other UniDoc tools
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn svg,
.btn .material-icons-round {
  width: 20px;
  height: 20px;
  font-size: 20px;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1rem;
}

.btn-sm {
  padding: 10px 20px;
  font-size: 0.85rem;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-light);
  color: var(--text);
}

.btn-outline:hover {
  border-color: var(--primary);
  background: rgba(124, 77, 255, 0.08);
  transform: translateY(-2px);
}

.btn-clean-all {
  background: var(--primary);
  color: #fff;
}

.btn-clean-all:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-clean-sensitive {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border-light);
}

.btn-clean-sensitive:hover {
  border-color: var(--primary);
  background: rgba(124, 77, 255, 0.08);
}

.btn-download {
  background: var(--color-safe);
  color: #fff;
}

.btn-download:hover {
  background: #43A047;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(76, 175, 80, 0.3);
}

.btn-clean-gps {
  background: linear-gradient(135deg, #FF6B35, #F7931E);
  color: #fff;
  border: none;
}

.btn-clean-gps:hover:not(:disabled) {
  background: linear-gradient(135deg, #E55A2B, #E08518);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 107, 53, 0.35);
}

.btn-clean-gps:disabled,
.btn-clean-gps.disabled {
  background: var(--surface);
  color: var(--text-muted);
  border: 1px solid var(--border);
  cursor: not-allowed;
  opacity: 0.5;
}

.btn-export {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border-light);
}

.btn-export:hover {
  border-color: var(--primary);
  background: rgba(124, 77, 255, 0.08);
}

/* ========================================
   GPS STATUS INDICATOR
   ======================================== */

.gps-status {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-md);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.gps-status-icon svg {
  width: 20px;
  height: 20px;
}

.gps-status-text {
  flex: 1;
}

.gps-status-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 12px;
}

.gps-status.gps-present {
  background: rgba(255, 107, 53, 0.12);
  border: 1px solid rgba(255, 107, 53, 0.3);
  color: #FF6B35;
}

.gps-status.gps-present .gps-status-badge {
  background: rgba(255, 107, 53, 0.2);
  color: #FF6B35;
}

.gps-status.gps-absent {
  background: rgba(76, 175, 80, 0.1);
  border: 1px solid rgba(76, 175, 80, 0.3);
  color: var(--color-safe);
}

.gps-status.gps-absent .gps-status-badge {
  background: rgba(76, 175, 80, 0.2);
  color: var(--color-safe);
}

.gps-status.gps-removed {
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.3);
  color: var(--secondary);
}

.gps-status.gps-removed .gps-status-badge {
  background: rgba(0, 229, 255, 0.2);
  color: var(--secondary);
}

/* ========================================
   LOADING & ERROR STATES
   ======================================== */

.loading-state,
.error-state,
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl);
  text-align: center;
  min-height: 300px;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: var(--spacing-md);
}

.error-state svg {
  width: 48px;
  height: 48px;
  color: var(--color-risky);
  margin-bottom: var(--spacing-md);
}

.error-state p {
  color: var(--color-risky);
}

.empty-state svg {
  width: 64px;
  height: 64px;
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
}

.empty-state p {
  color: var(--text-secondary);
}

.empty-hint {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: var(--spacing-xs);
}

/* ========================================
   SCORE RING SVG STYLES
   ======================================== */

.score-ring-bg {
  fill: none;
  stroke: var(--border);
}

.score-ring-progress {
  fill: none;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.5s ease;
}

.score-ring-progress.safe { stroke: var(--color-safe); }
.score-ring-progress.moderate { stroke: var(--color-moderate); }
.score-ring-progress.risky { stroke: var(--color-risky); }

.score-ring-text {
  fill: var(--text);
  font-weight: 700;
}

.score-ring-label {
  fill: var(--text-secondary);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .header-content {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }
  
  #drop-zone {
    padding: var(--spacing-lg);
  }
  
  .drop-zone-icon {
    width: 48px;
    height: 48px;
  }
  
  .file-summary-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }
  
  .cleaner-options {
    flex-direction: column;
  }
  
  .cleaner-options .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ========================================
   UTILITIES
   ======================================== */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-safe { color: var(--color-safe) !important; }
.text-moderate { color: var(--color-moderate) !important; }
.text-risky { color: var(--color-risky) !important; }

.bg-safe { background: var(--color-safe-bg) !important; }
.bg-moderate { background: var(--color-moderate-bg) !important; }
.bg-risky { background: var(--color-risky-bg) !important; }

/* ========================================
   FEATURES SECTION - Enhanced styling
   ======================================== */

.features-section {
  padding: 80px 0;
}

.section-center {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2,
.section-title {
  color: var(--text);
}

.section-subtitle {
  color: var(--text-secondary);
}

.features-grid .feature-card,
.tool-link-section a,
.contact-section .container > div {
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.tool-link-section a:hover,
.feature-card:hover {
  transform: translateY(-2px);
}

.features-section {
  padding: 60px 0;
}

.section-center {
  text-align: center;
  margin-bottom: 40px;
}

.section-title-lg {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-subtitle-limit {
  max-width: 600px;
  margin: 0 auto;
}

.why-intro-text {
  max-width: 860px;
  margin: 20px auto 0;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.75;
}

.info-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.info-feature-card {
  background: var(--surface);
  padding: 28px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.info-feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(124, 77, 255, 0.4);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(124, 77, 255, 0.2);
}

.info-feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  margin-bottom: 20px;
  background: rgba(124, 77, 255, 0.12);
}

.info-feature-icon .material-icons-round {
  font-size: 26px;
}

.icon-primary {
  color: var(--primary-light);
  background: rgba(124, 77, 255, 0.12);
}

.icon-cyan {
  color: var(--secondary);
  background: rgba(0, 229, 255, 0.12);
}

.icon-green {
  color: var(--safe-color);
  background: rgba(76, 175, 80, 0.12);
}

.icon-amber {
  color: var(--caution-color);
  background: rgba(255, 179, 0, 0.12);
}

.feature-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text);
}

.feature-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.colorful-tools-section {
  padding: 60px 0;
}

.tool-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.tool-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px;
  border-radius: var(--radius-lg);
  text-decoration: none;
  border: 1px solid var(--border);
  background: var(--surface);
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.tool-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.tool-card-icon {
  font-size: 26px;
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
}

.tool-card-content {
  flex: 1;
}

.tool-card-content h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.tool-card-content p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.tool-card-cyan {
  border-color: rgba(0, 229, 255, 0.35);
}

.tool-card-cyan:hover {
  border-color: rgba(0, 229, 255, 0.6);
  box-shadow: 0 16px 40px rgba(0, 229, 255, 0.15);
}

.tool-card-cyan .tool-card-icon {
  color: #00E5FF;
  background: rgba(0, 229, 255, 0.12);
}

.tool-card-purple {
  border-color: rgba(124, 77, 255, 0.35);
}

.tool-card-purple:hover {
  border-color: rgba(124, 77, 255, 0.6);
  box-shadow: 0 16px 40px rgba(124, 77, 255, 0.15);
}

.tool-card-purple .tool-card-icon {
  color: #B388FF;
  background: rgba(124, 77, 255, 0.12);
}

.tool-card-pink {
  border-color: rgba(255, 64, 129, 0.35);
}

.tool-card-pink:hover {
  border-color: rgba(255, 64, 129, 0.6);
  box-shadow: 0 16px 40px rgba(255, 64, 129, 0.15);
}

.tool-card-pink .tool-card-icon {
  color: #FF4FA6;
  background: rgba(255, 64, 129, 0.12);
}

.tool-card-amber {
  border-color: rgba(255, 179, 0, 0.35);
}

.tool-card-amber:hover {
  border-color: rgba(255, 179, 0, 0.6);
  box-shadow: 0 16px 40px rgba(255, 179, 0, 0.15);
}

.tool-card-amber .tool-card-icon {
  color: #FFCA4A;
  background: rgba(255, 179, 0, 0.12);
}

/* ========================================
   BOTTOM CONTACT SECTION
   ======================================== */

.bottom-contact-section {
  padding: 40px 0 60px;
  text-align: center;
}

/* ========================================
   SEO FAQ SECTION
   ======================================== */

.seo-faq-section {
  padding: 60px 0 40px;
}

.seo-faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.seo-faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}

.seo-faq-item:hover {
  border-color: var(--border-light);
}

.seo-faq-item h3 {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 10px;
  color: var(--text);
}

.seo-faq-item p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.contact-redirect-btn {
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-glow);
  transition: var(--transition);
}

.contact-redirect-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(124, 77, 255, 0.4);
}

.contact-btn {
  padding: 14px 32px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
}

/* ========================================
   FOOTER
   ======================================== */

footer {
  text-align: center;
  padding: 32px 24px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  margin-top: 40px;
  background: rgba(13, 14, 18, 0.5);
}

footer p {
  font-size: 0.9rem;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 1024px) {
  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }
  
  .info-features-grid {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  
  .page-content {
    padding-top: 84px;
  }

  .hero {
    padding: 32px 0 24px;
  }
  
  .hero-title {
    font-size: 1.8rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }

  .nav-container {
    padding: 0 16px;
  }

  .section-title-lg {
    font-size: 1.5rem;
  }

  .why-intro-text {
    font-size: 0.95rem;
    line-height: 1.7;
  }

  .tool-links-grid {
    grid-template-columns: 1fr;
  }

  .seo-faq-grid {
    grid-template-columns: 1fr;
  }
  
  .upload-card {
    padding: 16px;
  }
  
  .drop-zone {
    padding: 32px 16px;
  }
  
  .file-summary-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }
  
  .cleaner-options {
    flex-direction: column;
  }
  
  .cleaner-options .btn {
    width: 100%;
    justify-content: center;
  }
  
  .features-section {
    padding: 48px 0;
  }
  
  .info-features-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.5rem;
  }
  
  .hero-badge {
    font-size: 0.75rem;
    padding: 6px 14px;
  }
  
  .format-tag {
    padding: 4px 10px;
    font-size: 0.7rem;
  }
}