/* ============================================================================
   Backup Management System - Premium Design System
   Version: 1.1
   ============================================================================ */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ============================================================================
   CSS Variables & Design Tokens
   ============================================================================ */
:root {
  /* Color Palette - Premium Dark Theme */
  --primary-50: #e0f2fe;
  --primary-100: #bae6fd;
  --primary-200: #7dd3fc;
  --primary-300: #38bdf8;
  --primary-400: #0ea5e9;
  --primary-500: #0284c7;
  --primary-600: #0369a1;
  --primary-700: #075985;
  --primary-800: #0c4a6e;
  --primary-900: #082f49;

  /* Accent Colors */
  --accent-purple: #a855f7;
  --accent-pink: #ec4899;
  --accent-orange: #f97316;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --accent-yellow: #eab308;

  /* Neutral Colors */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Dark Theme Colors */
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --bg-card: #1a1f2e;
  --bg-hover: #252b3b;

  /* Text Colors */
  --text-primary: #f9fafb;
  --text-secondary: #d1d5db;
  --text-tertiary: #9ca3af;
  --text-muted: #6b7280;

  /* Border Colors */
  --border-primary: #374151;
  --border-secondary: #4b5563;
  --border-accent: #0ea5e9;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #0ea5e9 0%, #a855f7 100%);
  --gradient-secondary: linear-gradient(135deg, #ec4899 0%, #f97316 100%);
  --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --gradient-danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  --gradient-dark: linear-gradient(180deg, #0a0e1a 0%, #1a1f2e 100%);

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  --shadow-glow: 0 0 20px rgba(14, 165, 233, 0.3);

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-Index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Custom Scrollbar Styling */
::-webkit-scrollbar {
  width: 4px;
  height: 4px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-400);
}

/* Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--bg-tertiary) var(--bg-primary);
}

/* ============================================================================
   Reset & Base Styles
   ============================================================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ============================================================================
   Typography
   ============================================================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1rem;
}

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

a {
  color: var(--primary-400);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-300);
}

code {
  font-family: var(--font-mono);
  background: var(--bg-tertiary);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--accent-purple);
}

/* ============================================================================
   Layout Components
   ============================================================================ */
.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-lg);
}

/* Grid System */
.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 calc(var(--spacing-md) * -1);
}

.col {
  flex: 1;
  padding: 0 var(--spacing-md);
}

.col-1 {
  flex: 0 0 8.333%;
  max-width: 8.333%;
}

.col-2 {
  flex: 0 0 16.666%;
  max-width: 16.666%;
}

.col-3 {
  flex: 0 0 25%;
  max-width: 25%;
}

.col-4 {
  flex: 0 0 33.333%;
  max-width: 33.333%;
}

.col-5 {
  flex: 0 0 41.666%;
  max-width: 41.666%;
}

.col-6 {
  flex: 0 0 50%;
  max-width: 50%;
}

.col-7 {
  flex: 0 0 58.333%;
  max-width: 58.333%;
}

.col-8 {
  flex: 0 0 66.666%;
  max-width: 66.666%;
}

.col-9 {
  flex: 0 0 75%;
  max-width: 75%;
}

.col-10 {
  flex: 0 0 83.333%;
  max-width: 83.333%;
}

.col-11 {
  flex: 0 0 91.666%;
  max-width: 91.666%;
}

.col-12 {
  flex: 0 0 100%;
  max-width: 100%;
}

/* ============================================================================
   Card Component
   ============================================================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  border-color: var(--border-accent);
}

.card:hover::before {
  opacity: 1;
}

.card-header {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border-primary);
}

.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0;
  color: var(--text-primary);
}

.card-subtitle {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-top: var(--spacing-xs);
}

.card-body {
  padding: var(--spacing-md) 0;
}

.card-footer {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-primary);
}

/* Glassmorphism Card */
.card-glass {
  background: rgba(26, 31, 46, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ============================================================================
   Button Component
   ============================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

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

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Button Variants */
.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-secondary);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--border-accent);
}

.btn-success {
  background: var(--gradient-success);
  color: white;
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-danger {
  background: var(--gradient-danger);
  color: white;
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--primary-400);
  border: 2px solid var(--primary-400);
}

.btn-outline:hover {
  background: var(--primary-400);
  color: white;
}

/* Button Sizes */
.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

.btn-icon {
  padding: 0.75rem;
  aspect-ratio: 1;
}

/* ============================================================================
   Form Components
   ============================================================================ */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  font-family: var(--font-family);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: all var(--transition-base);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-400);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
  background: var(--bg-secondary);
}

.form-control::placeholder {
  color: var(--text-muted);
}

select.form-control {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%239ca3af'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1.25rem;
  padding-right: 2.5rem;
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

.form-check {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.form-check-input {
  width: 1.25rem;
  height: 1.25rem;
  cursor: pointer;
}

.form-text {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-top: var(--spacing-xs);
}

.form-error {
  color: var(--accent-red);
  font-size: 0.75rem;
  margin-top: var(--spacing-xs);
}

/* ============================================================================
   Table Component
   ============================================================================ */
.table-responsive {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
}

.table thead {
  background: var(--bg-tertiary);
}

.table th {
  padding: 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--border-primary);
}

.table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-primary);
  color: var(--text-primary);
}

.table tbody tr {
  transition: background var(--transition-fast);
}

.table tbody tr:hover {
  background: var(--bg-hover);
}

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

/* ============================================================================
   Badge Component
   ============================================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary {
  background: rgba(14, 165, 233, 0.2);
  color: var(--primary-300);
}

.badge-success {
  background: rgba(16, 185, 129, 0.2);
  color: var(--accent-green);
}

.badge-danger {
  background: rgba(239, 68, 68, 0.2);
  color: var(--accent-red);
}

.badge-warning {
  background: rgba(234, 179, 8, 0.2);
  color: var(--accent-yellow);
}

.badge-info {
  background: rgba(168, 85, 247, 0.2);
  color: var(--accent-purple);
}

/* ============================================================================
   Alert Component
   ============================================================================ */
.alert {
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
  border-left: 4px solid;
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.alert-danger {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--accent-red);
  color: var(--accent-red);
}

.alert-warning {
  background: rgba(234, 179, 8, 0.1);
  border-color: var(--accent-yellow);
  color: var(--accent-yellow);
}

.alert-info {
  background: rgba(14, 165, 233, 0.1);
  border-color: var(--primary-400);
  color: var(--primary-300);
}

/* ============================================================================
   Utility Classes
   ============================================================================ */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.text-primary {
  color: var(--primary-400);
}

.text-success {
  color: var(--accent-green);
}

.text-danger {
  color: var(--accent-red);
}

.text-warning {
  color: var(--accent-yellow);
}

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

.bg-primary {
  background: var(--primary-500);
}

.bg-secondary {
  background: var(--bg-secondary);
}

.bg-tertiary {
  background: var(--bg-tertiary);
}

.d-none {
  display: none;
}

.d-block {
  display: block;
}

.d-flex {
  display: flex;
}

.d-grid {
  display: grid;
}

.flex-column {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.align-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}

.mt-0 {
  margin-top: 0;
}

.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-0 {
  margin-bottom: 0;
}

.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);
}

.p-0 {
  padding: 0;
}

.p-1 {
  padding: var(--spacing-sm);
}

.p-2 {
  padding: var(--spacing-md);
}

.p-3 {
  padding: var(--spacing-lg);
}

.p-4 {
  padding: var(--spacing-xl);
}

.rounded {
  border-radius: var(--radius-md);
}

.rounded-lg {
  border-radius: var(--radius-lg);
}

.rounded-full {
  border-radius: var(--radius-full);
}

.shadow-sm {
  box-shadow: var(--shadow-sm);
}

.shadow-md {
  box-shadow: var(--shadow-md);
}

.shadow-lg {
  box-shadow: var(--shadow-lg);
}

.shadow-xl {
  box-shadow: var(--shadow-xl);
}

/* ============================================================================
   Animations
   ============================================================================ */
@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

.animate-fade-in {
  animation: fadeIn var(--transition-base);
}

.animate-slide-in-up {
  animation: slideInUp var(--transition-base);
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}