/**
 * Ayiti VPN (Pwotek) - Stylesheet
 * Dark theme with purple/blue accents
 */

/* ==================== CSS Variables ==================== */
:root {
  /* Dark theme colors */
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-tertiary: #0f3460;
  --bg-card: #1e2746;

  /* Accent colors */
  --accent-purple: #7c3aed;
  --accent-blue: #3b82f6;
  --accent-gradient: linear-gradient(135deg, #7c3aed 0%, #3b82f6 100%);

  /* Status colors */
  --status-success: #10b981;
  --status-warning: #f59e0b;
  --status-error: #ef4444;
  --status-info: #3b82f6;

  /* Text colors */
  --text-primary: #ffffff;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Border */
  --border-color: #334155;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);

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

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

/* Light theme */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e2e8f0;
  --bg-card: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.15);
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent-purple);
}

img {
  max-width: 100%;
  height: auto;
}

/* ==================== Typography ==================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

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

.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==================== Layout ==================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

/* ==================== Navigation ==================== */
.navbar {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.logo svg {
  width: 32px;
  height: 32px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

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

/* ==================== Buttons ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

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

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

.btn-outline:hover {
  background-color: var(--bg-tertiary);
}

.btn-success {
  background-color: var(--status-success);
  color: white;
}

.btn-danger {
  background-color: var(--status-error);
  color: white;
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.75rem;
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
}

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

/* ==================== Cards ==================== */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0;
}

/* ==================== Hero Section ==================== */
.hero {
  padding: var(--spacing-2xl) 0;
  text-align: center;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.hero-features {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.hero-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
}

.hero-feature svg {
  color: var(--status-success);
}

/* ==================== Pricing Cards ==================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .pricing-grid {
    grid-template-columns: 1fr;
  }
}

.pricing-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 1px var(--accent-purple);
}

.pricing-card.featured::before {
  content: 'Popular';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-gradient);
  color: white;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.pricing-card h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-purple);
  margin-bottom: var(--spacing-md);
}

.pricing-price span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
}

.pricing-features {
  list-style: none;
  text-align: left;
  margin: var(--spacing-lg) 0;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  color: var(--text-secondary);
}

.pricing-features li svg {
  color: var(--status-success);
  flex-shrink: 0;
}

/* ==================== Status Indicators ==================== */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.status-enabled, .status-active, .status-connected {
  background-color: var(--status-success);
  box-shadow: 0 0 8px var(--status-success);
}

.status-paused, .status-warning {
  background-color: var(--status-warning);
}

.status-disabled, .status-expired, .status-disconnected {
  background-color: var(--status-error);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
}

.status-badge.enabled {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--status-success);
}

.status-badge.paused {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--status-warning);
}

.status-badge.disabled {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--status-error);
}

/* ==================== Device Cards ==================== */
.device-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

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

.device-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.device-icon svg {
  width: 24px;
  height: 24px;
  color: white;
}

.device-name {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.device-ip {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-family: monospace;
}

.device-stats {
  display: flex;
  gap: var(--spacing-lg);
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.device-actions {
  display: flex;
  gap: var(--spacing-sm);
}

/* ==================== Usage Stats ==================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.stat-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-purple);
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* ==================== Progress Bars ==================== */
.progress-bar {
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-full);
  height: 8px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--accent-gradient);
  border-radius: var(--radius-full);
  transition: width 0.3s;
}

.progress-fill.warning {
  background: var(--status-warning);
}

.progress-fill.danger {
  background: var(--status-error);
}

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

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

.form-input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-purple);
}

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

/* ==================== Modals ==================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background-color: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.9);
  transition: transform 0.2s;
}

.modal-overlay.active .modal {
  transform: scale(1);
}

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

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--spacing-xs);
}

.modal-close:hover {
  color: var(--text-primary);
}

/* ==================== Alerts ==================== */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.alert-success {
  background-color: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--status-success);
  color: var(--status-success);
}

.alert-error {
  background-color: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--status-error);
  color: var(--status-error);
}

.alert-warning {
  background-color: rgba(245, 158, 11, 0.1);
  border: 1px solid var(--status-warning);
  color: var(--status-warning);
}

.alert-info {
  background-color: rgba(59, 130, 246, 0.1);
  border: 1px solid var(--status-info);
  color: var(--status-info);
}

/* ==================== Language Switcher ==================== */
.lang-switcher {
  display: flex;
  gap: var(--spacing-xs);
  background-color: var(--bg-tertiary);
  padding: var(--spacing-xs);
  border-radius: var(--radius-md);
}

.lang-btn {
  padding: var(--spacing-xs) var(--spacing-sm);
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: all 0.2s;
}

.lang-btn.active {
  background: var(--accent-gradient);
  color: white;
}

/* ==================== Theme Toggle ==================== */
.theme-toggle {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: background-color 0.2s;
}

.theme-toggle:hover {
  background-color: var(--bg-tertiary);
}

/* ==================== Footer ==================== */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-2xl);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
}

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

/* ==================== Animations ==================== */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.animate-pulse {
  animation: pulse 2s infinite;
}

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

.animate-spin {
  animation: spin 1s linear infinite;
}

/* ==================== Utilities ==================== */
.hidden { display: none !important; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }