:root {
  /* Professional Color Palette */
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #dbeafe;
  --primary-dark: #1e40af;
  
  --secondary: #7c3aed;
  --secondary-hover: #6d28d9;
  --secondary-light: #ede9fe;
  
  --success: #10b981;
  --success-hover: #059669;
  --success-light: #d1fae5;
  
  --warning: #f59e0b;
  --warning-hover: #d97706;
  --warning-light: #fef3c7;
  
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --danger-light: #fee2e2;
  
  --info: #06b6d4;
  --info-hover: #0891b2;
  --info-light: #cffafe;
  
  /* Neutral Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-dark: #0f172a;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #64748b;
  --text-white: #ffffff;
  
  --border-color: #e2e8f0;
  --border-hover: #cbd5e1;
  --border-focus: var(--primary);
  
  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Z-index layers */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* ==================== RESET & BASE ==================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-secondary);
  overflow-x: hidden;
}

/* ==================== HEADER & NAVIGATION ==================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  animation: slideDown 0.4s ease-out;
}

.navbar-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition-base);
}

.navbar-brand:hover {
  transform: scale(1.05);
  color: var(--primary-hover);
}

.navbar-brand i {
  font-size: 2rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.navbar-link {
  padding: 0.5rem 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
  position: relative;
}

.navbar-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--primary);
  transform: translateX(-50%);
  transition: var(--transition-base);
}

.navbar-link:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.navbar-link:hover::after {
  width: 80%;
}

/* ==================== HERO SECTION ==================== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  padding: 6rem 2rem;
  overflow: hidden;
  isolation: isolate;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.08'%3E%3Cpath d='M50 50c0-5.523 4.477-10 10-10s10 4.477 10 10-4.477 10-10 10c0 5.523-4.477 10-10 10s-10-4.477-10-10 4.477-10 10-10zM10 10c0-5.523 4.477-10 10-10s10 4.477 10 10-4.477 10-10 10c0 5.523-4.477 10-10 10S0 25.523 0 20s4.477-10 10-10zm10 8c4.418 0 8-3.582 8-8s-3.582-8-8-8-8 3.582-8 8 3.582 8 8 8zm40 40c4.418 0 8-3.582 8-8s-3.582-8-8-8-8 3.582-8 8 3.582 8 8 8z' /%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.4;
  z-index: -1;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
  color: var(--text-white);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  backdrop-filter: blur(10px);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.6s ease-out;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero-description {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  line-height: 1.7;
  max-width: 800px;
  margin: 0 auto 2rem;
  opacity: 0.95;
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

/* ==================== STATS SECTION ==================== */
.stats-section {
  background: var(--bg-primary);
  padding: 3rem 2rem;
  margin-top: -3rem;
  position: relative;
  z-index: 10;
  box-shadow: var(--shadow-2xl);
}

.stats-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.stat-card {
  text-align: center;
  padding: 2rem;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
  border: 1px solid var(--border-color);
  transition: var(--transition-slow);
  animation: fadeInUp 0.6s ease-out both;
}

.stat-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary);
}

.stat-icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xl);
  font-size: 2rem;
  background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
  color: var(--primary);
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* ==================== MAIN CONTAINER ==================== */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

/* ==================== CARD COMPONENTS ==================== */
.card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition-slow);
  animation: fadeInUp 0.6s ease-out both;
}

.card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
  border-color: var(--primary-light);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--border-color);
}

.card-icon {
  width: 3.5rem;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xl);
  font-size: 1.75rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--text-white);
  box-shadow: var(--shadow-lg);
}

.card-title {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.card-subtitle {
  font-size: 1rem;
  color: var(--text-tertiary);
  margin-top: 0.25rem;
}

/* ==================== GRID LAYOUTS ==================== */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

/* ==================== FORMS ==================== */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.form-label i {
  color: var(--primary);
  font-size: 1.125rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1.25rem;
  font-family: inherit;
  font-size: 1rem;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
  outline: none;
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--border-hover);
  background: var(--bg-primary);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--border-focus);
  background: var(--bg-primary);
  box-shadow: 0 0 0 4px var(--primary-light);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  font-family: inherit;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-tertiary);
}

/* ==================== BUTTONS ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  padding: 0.875rem 1.75rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  text-align: center;
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  animation: pulse 1.5s ease-in-out infinite;
}

/* Button Variants */
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--text-white);
  border-color: var(--primary);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-hover), var(--primary));
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.btn-success {
  background: linear-gradient(135deg, var(--success), #059669);
  color: var(--text-white);
  border-color: var(--success);
}

.btn-success:hover {
  background: linear-gradient(135deg, var(--success-hover), var(--success));
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger), #dc2626);
  color: var(--text-white);
  border-color: var(--danger);
}

.btn-danger:hover {
  background: linear-gradient(135deg, var(--danger-hover), var(--danger));
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  background: var(--bg-tertiary);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: var(--text-white);
  box-shadow: var(--shadow-md);
}

.btn-lg {
  padding: 1.125rem 2rem;
  font-size: 1.125rem;
}

.btn-sm {
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
}

.btn-block {
  width: 100%;
}

/* ==================== ALERTS ==================== */
.alert {
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-lg);
  border: 2px solid;
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  animation: slideInDown 0.4s ease-out;
}

.alert-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.alert-content {
  flex: 1;
  font-weight: 600;
}

.alert-success {
  background: var(--success-light);
  border-color: var(--success);
  color: #065f46;
}

.alert-success .alert-icon {
  color: var(--success);
}

.alert-warning {
  background: var(--warning-light);
  border-color: var(--warning);
  color: #92400e;
}

.alert-warning .alert-icon {
  color: var(--warning);
}

.alert-danger {
  background: var(--danger-light);
  border-color: var(--danger);
  color: #991b1b;
}

.alert-danger .alert-icon {
  color: var(--danger);
}

.alert-info {
  background: var(--info-light);
  border-color: var(--info);
  color: #164e63;
}

.alert-info .alert-icon {
  color: var(--info);
}

/* ==================== LOGS SECTION ==================== */
.logs-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.logs-filters {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  flex: 1;
}

.filter-tabs {
  display: inline-flex;
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0.25rem;
  gap: 0.25rem;
}

.filter-tab {
  padding: 0.75rem 1.5rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.filter-tab:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.filter-tab.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--text-white);
  box-shadow: var(--shadow-md);
}

.search-box {
  position: relative;
  flex: 1;
  max-width: 400px;
}

.search-box i {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  font-size: 1.125rem;
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 0.875rem 1.25rem 0.875rem 3rem;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  background: var(--bg-secondary);
  font-family: inherit;
  font-size: 1rem;
  color: var(--text-primary);
  transition: var(--transition-base);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--bg-primary);
  box-shadow: 0 0 0 4px var(--primary-light);
}

.logs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.log-card {
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  transition: var(--transition-slow);
  animation: fadeIn 0.4s ease-out;
  position: relative;
  overflow: hidden;
}

.log-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  transform: scaleY(0);
  transition: var(--transition-slow);
}

.log-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.log-card:hover::before {
  transform: scaleY(1);
}

.log-card.status-fixed {
  border-color: var(--success);
  background: linear-gradient(135deg, var(--success-light), var(--bg-primary));
}

.log-card.status-fixed::before {
  background: var(--success);
  transform: scaleY(1);
}

.log-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.log-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.log-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.log-badge.badge-pending {
  background: var(--warning-light);
  color: #92400e;
}

.log-badge.badge-progress {
  background: var(--info-light);
  color: #164e63;
}

.log-badge.badge-fixed {
  background: var(--success-light);
  color: #065f46;
}

.log-badge.badge-delivered {
  background: var(--secondary-light);
  color: #5b21b6;
}

.log-meta {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 1rem 0;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
}

.log-meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
}

.log-meta-item i {
  color: var(--primary);
  width: 1.25rem;
}

.log-meta-item strong {
  color: var(--text-primary);
  font-weight: 600;
}

.log-description {
  margin: 1rem 0;
  padding: 1rem;
  background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.log-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

/* ==================== PAGINATION ==================== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

.pagination-btn {
  min-width: 2.75rem;
  height: 2.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 0.875rem;
  border: 2px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-base);
}

.pagination-btn:hover:not(:disabled) {
  border-color: var(--primary);
  background: var(--primary);
  color: var(--text-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.pagination-btn:disabled {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--text-white);
  cursor: not-allowed;
  box-shadow: var(--shadow-sm);
}

.pagination-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-color: var(--primary);
  color: var(--text-white);
  box-shadow: var(--shadow-md);
}

/* ==================== FOOTER ==================== */
.footer {
  background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
  border-top: 2px solid var(--border-color);
  padding: 3rem 2rem;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  text-align: center;
}

.footer-brand {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition-base);
}

.footer-link:hover {
  color: var(--primary);
  text-decoration: underline;
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.social-icon {
  width: 3rem;
  height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--bg-primary);
  color: var(--primary);
  font-size: 1.25rem;
  border: 2px solid var(--border-color);
  transition: var(--transition-base);
}

.social-icon:hover {
  background: var(--primary);
  color: var(--text-white);
  border-color: var(--primary);
  transform: translateY(-4px) scale(1.1);
  box-shadow: var(--shadow-lg);
}

.footer-copyright {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

.footer-copyright i {
  color: var(--danger);
}

/* ==================== UTILITY CLASSES ==================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.hidden { display: none !important; }

/* READ-ONLY MODE */
.readonly .log-actions,
.readonly .form-group,
.readonly .btn-danger,
.readonly select,
.readonly textarea {
  display: none !important;
}

.readonly .log-card {
  opacity: 0.85;
}

/* ==================== ANIMATIONS ==================== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

@keyframes shimmer {
  0% { background-position: -1000px 0; }
  100% { background-position: 1000px 0; }
}

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 1200px) {
  .container {
    padding: 3rem 1.5rem;
  }
  
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .navbar-content {
    padding: 1rem 1.5rem;
  }
  
  .navbar-menu {
    display: none;
  }
  
  .hero {
    padding: 4rem 1.5rem;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .card {
    padding: 1.75rem;
  }
  
  .logs-grid {
    grid-template-columns: 1fr;
  }
  
  .logs-header {
    flex-direction: column;
    align-items: stretch;
  }
  
  .logs-filters {
    flex-direction: column;
    align-items: stretch;
  }
  
  .filter-tabs {
    width: 100%;
    flex-direction: column;
  }
  
  .search-box {
    max-width: 100%;
  }
  
  .log-actions {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 3rem 1rem;
  }
  
  .card {
    padding: 1.25rem;
  }
  
  .card-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ==================== SCROLLBAR STYLING ==================== */
::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-sm);
  border: 2px solid var(--bg-tertiary);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, var(--primary-hover), var(--primary));
}

/* ==================== SELECTION STYLING ==================== */
::selection {
  background: var(--primary);
  color: var(--text-white);
}

::-moz-selection {
  background: var(--primary);
  color: var(--text-white);
}

/* ==================== LOADING SKELETON ==================== */
.skeleton {
  background: linear-gradient(90deg, var(--bg-secondary) 0%, var(--bg-tertiary) 50%, var(--bg-secondary) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

.skeleton-text {
  height: 1rem;
  margin-bottom: 0.5rem;
}

.skeleton-heading {
  height: 2rem;
  width: 60%;
  margin-bottom: 1rem;
}

/* ==================== PRINT STYLES ==================== */
@media print {
  .navbar,
  .hero-actions,
  .log-actions,
  .pagination,
  .footer {
    display: none !important;
  }
  
  .card {
    page-break-inside: avoid;
    box-shadow: none;
    border: 1px solid var(--border-color);
  }
}