/* ============================================
   CHARTABL DESIGN SYSTEM
   Shared CSS Variables
   ============================================ */

:root {
  /* Brand Colors */
  --brand-primary: #0d9488;
  --brand-primary-muted: rgba(13, 148, 136, 0.15);
  --brand-secondary: #6366f1;
  --accent: #f59e0b;
  --button-text-color: #ffffff;
  --secondary-button-bg: #1a1f26;
  --secondary-button-text: #f1f5f9;

  /* Background Colors */
  --bg-primary: #0a0c0f;
  --bg-secondary: #12151a;
  --bg-tertiary: #1a1f26;
  --bg-card: #1a1f26;

  /* Text Colors */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Border */
  --border-color: #2d3748;

  /* Status Colors */
  --success: #22c55e;
  --success-bg: rgba(34, 197, 94, 0.15);
  --success-text: #22c55e;
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.15);
  --warning-text: #f59e0b;
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.15);
  --danger-text: #ef4444;
  --info: #3b82f6;
  --info-bg: rgba(59, 130, 246, 0.15);
  --info-text: #3b82f6;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Typography */
  --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

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

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

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

html {
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
}

a {
  color: var(--brand-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

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

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

/* Button Base */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

.btn-primary {
  background: var(--brand-primary);
  color: var(--button-text-color);
}

.btn-primary:hover:not(:disabled) {
  filter: brightness(1.1);
}

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

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-secondary);
  border-color: var(--brand-primary);
  color: var(--secondary-button-text);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

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

.btn-danger:hover:not(:disabled) {
  filter: brightness(1.1);
}

.btn-sm {
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--text-xs);
}

.btn-block {
  width: 100%;
}

/* Form Elements */
.form-group {
  margin-bottom: var(--space-md);
}

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

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--text-sm);
  color: var(--text-primary);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--brand-primary);
}

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

.form-hint {
  margin-top: var(--space-xs);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
}

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

.badge-success {
  background: var(--success-bg);
  color: var(--success-text);
}

.badge-warning {
  background: var(--warning-bg);
  color: var(--warning-text);
}

.badge-danger {
  background: var(--danger-bg);
  color: var(--danger-text);
}

.badge-info {
  background: var(--info-bg);
  color: var(--info-text);
}

/* Card */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.card-title {
  font-size: var(--text-base);
  font-weight: 600;
}

.card-body {
  padding: var(--space-lg);
}

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

.toast {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  animation: slideIn 0.3s ease;
  max-width: 400px;
}

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

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

.toast-warning {
  background: var(--warning);
  color: black;
}

.toast-info {
  background: var(--info);
  color: white;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* Spinner */
.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border-color);
  border-top-color: var(--brand-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--space-2xl);
  color: var(--text-muted);
}

.empty-state svg {
  margin-bottom: var(--space-md);
  opacity: 0.5;
}

/* Flex utilities */
.flex-1 {
  flex: 1;
}

.flex {
  display: flex;
}

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

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

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

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

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-lg);
}

.modal-overlay.hidden {
  display: none;
}

/* Modal */
.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
}

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

.modal-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--space-xs);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

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

.modal-body {
  padding: var(--space-lg);
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
}