/* ===================================
   The Landing - Main Styles
   =================================== */

/* CSS Variables */
:root {
  --color-bg: #0e0f11;
  --color-bg-secondary: #1a1b1e;
  --color-bg-tertiary: #252629;
  --color-accent: #c8f564;
  --color-accent-hover: #d4ff7a;
  --color-accent-dark: #a8d544;
  --color-text: #ffffff;
  --color-text-secondary: #b0b0b0;
  --color-text-muted: #808080;
  --color-border: #333333;
  --color-error: #ff6b6b;
  --color-success: #51cf66;
  --color-warning: #ffd43b;
  --color-info: #4dabf7;
  
  --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'DM Mono', 'Courier New', monospace;
  
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
  
  --transition-fast: 100ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;
}

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

html {
  font-size: 16px;
}

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

/* App Container */
.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.app-header {
  background: var(--color-bg-secondary);
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 2px solid var(--color-accent);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.app-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-accent);
  margin: 0;
}

.connection-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.status-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-text-muted);
  animation: pulse 2s infinite;
}

.status-indicator.connected {
  background: var(--color-success);
  animation: none;
}

.status-indicator.disconnected {
  background: var(--color-error);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Navigation Tabs */
.tab-navigation {
  background: var(--color-bg-secondary);
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  gap: var(--spacing-sm);
  overflow-x: auto;
  border-bottom: 1px solid var(--color-border);
}

.tab-button {
  background: transparent;
  color: var(--color-text-secondary);
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
  min-height: 44px;
}

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

.tab-button.active {
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 700;
}

/* Main Content */
.app-content {
  flex: 1;
  padding: var(--spacing-lg);
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

.tab-content {
  display: none;
  animation: fadeIn var(--transition-normal);
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.tab-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--color-accent);
}

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

.card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

/* Button Component */
.btn {
  background: var(--color-accent);
  color: var(--color-bg);
  border: none;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 44px;
  min-width: 44px;
  font-family: var(--font-sans);
}

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

.btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn:disabled {
  background: var(--color-bg-tertiary);
  color: var(--color-text-muted);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

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

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

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

.btn-danger:hover {
  background: #ff5252;
}

.btn-small {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.875rem;
  min-height: 36px;
}

/* Toggle Component */
.toggle {
  position: relative;
  display: inline-block;
  width: 52px;
  height: 28px;
  min-width: 52px;
  min-height: 28px;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg-tertiary);
  transition: var(--transition-normal);
  border-radius: 28px;
  border: 2px solid var(--color-border);
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 2px;
  bottom: 2px;
  background: var(--color-text-secondary);
  transition: var(--transition-normal);
  border-radius: 50%;
}

.toggle input:checked + .toggle-slider {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.toggle input:checked + .toggle-slider:before {
  transform: translateX(24px);
  background: var(--color-bg);
}

.toggle input:disabled + .toggle-slider {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Slider Component */
.slider-container {
  width: 100%;
}

.slider {
  -webkit-appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: var(--color-bg-tertiary);
  outline: none;
  transition: var(--transition-fast);
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-accent);
  cursor: pointer;
  transition: var(--transition-fast);
}

.slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-accent);
  cursor: pointer;
  border: none;
  transition: var(--transition-fast);
}

.slider:hover::-webkit-slider-thumb {
  background: var(--color-accent-hover);
  transform: scale(1.1);
}

.slider:hover::-moz-range-thumb {
  background: var(--color-accent-hover);
  transform: scale(1.1);
}

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

/* Select Component */
.select {
  background: var(--color-bg-tertiary);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 1rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  min-height: 44px;
  font-family: var(--font-sans);
  width: 100%;
}

.select:hover {
  border-color: var(--color-accent);
}

.select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(200, 245, 100, 0.1);
}

/* Input Component */
.input {
  background: var(--color-bg-tertiary);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 1rem;
  border-radius: var(--radius-md);
  min-height: 44px;
  font-family: var(--font-sans);
  width: 100%;
}

.input:hover {
  border-color: var(--color-accent);
}

.input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(200, 245, 100, 0.1);
}

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

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.toast {
  background: var(--color-bg-secondary);
  color: var(--color-text);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 300px;
  max-width: 400px;
  border-left: 4px solid var(--color-info);
  animation: slideIn var(--transition-normal);
}

@keyframes slideIn {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.toast.success {
  border-left-color: var(--color-success);
}

.toast.error {
  border-left-color: var(--color-error);
}

.toast.warning {
  border-left-color: var(--color-warning);
}

/* Modal */
.modal-container {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

.modal-container.active {
  display: flex;
}

.modal {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: modalIn var(--transition-normal);
}

@keyframes modalIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .app-header {
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: flex-start;
  }
  
  .app-title {
    font-size: 1.5rem;
  }
  
  .tab-navigation {
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .app-content {
    padding: var(--spacing-md);
  }
  
  .toast-container {
    left: var(--spacing-md);
    right: var(--spacing-md);
  }
  
  .toast {
    min-width: auto;
  }
}

/* Utility Classes */
.hidden {
  display: none !important;
}

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

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

.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); }

.flex {
  display: flex;
}

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

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

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

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