/**
 * ActorsDB Enterprise Design System
 * Version: 1.0.0
 *
 * A professional, enterprise-grade design system for SaaS applications
 * Inspired by: Linear, Notion, Stripe, Retool
 */

/* ============================================================================
   DESIGN TOKENS (CSS Custom Properties)
   ========================================================================= */

:root {
  /* === Color System === */

  /* Neutrals (Grayscale) - Primary palette */
  --color-gray-50: #FAFAFA;
  --color-gray-100: #F5F5F5;
  --color-gray-200: #E5E5E5;
  --color-gray-300: #D4D4D4;
  --color-gray-400: #A3A3A3;
  --color-gray-500: #737373;
  --color-gray-600: #525252;
  --color-gray-700: #404040;
  --color-gray-800: #262626;
  --color-gray-900: #171717;
  --color-gray-950: #0A0A0A;

  /* Brand Colors - Minimal usage */
  --color-primary-50: #EFF6FF;
  --color-primary-100: #DBEAFE;
  --color-primary-200: #BFDBFE;
  --color-primary-300: #93C5FD;
  --color-primary-400: #60A5FA;
  --color-primary-500: #3B82F6;  /* Primary brand color */
  --color-primary-600: #2563EB;
  --color-primary-700: #1D4ED8;
  --color-primary-800: #1E40AF;
  --color-primary-900: #1E3A8A;

  /* Semantic Colors */
  --color-success-50: #F0FDF4;
  --color-success-500: #22C55E;
  --color-success-600: #16A34A;

  --color-warning-50: #FFFBEB;
  --color-warning-500: #F59E0B;
  --color-warning-600: #D97706;

  --color-error-50: #FEF2F2;
  --color-error-500: #EF4444;
  --color-error-600: #DC2626;

  --color-info-50: #EFF6FF;
  --color-info-500: #3B82F6;
  --color-info-600: #2563EB;

  /* === Spacing Scale (8px base) === */
  --spacing-0: 0;
  --spacing-1: 0.25rem;  /* 4px */
  --spacing-2: 0.5rem;   /* 8px */
  --spacing-3: 0.75rem;  /* 12px */
  --spacing-4: 1rem;     /* 16px */
  --spacing-5: 1.25rem;  /* 20px */
  --spacing-6: 1.5rem;   /* 24px */
  --spacing-8: 2rem;     /* 32px */
  --spacing-10: 2.5rem;  /* 40px */
  --spacing-12: 3rem;    /* 48px */
  --spacing-16: 4rem;    /* 64px */
  --spacing-20: 5rem;    /* 80px */
  --spacing-24: 6rem;    /* 96px */

  /* === Typography Scale === */
  --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-family-mono: ui-monospace, "SF Mono", Monaco, "Cascadia Mono", "Segoe UI Mono", "Roboto Mono", monospace;

  --font-size-xs: 0.75rem;     /* 12px */
  --font-size-sm: 0.875rem;    /* 14px */
  --font-size-base: 1rem;      /* 16px */
  --font-size-lg: 1.125rem;    /* 18px */
  --font-size-xl: 1.25rem;     /* 20px */
  --font-size-2xl: 1.5rem;     /* 24px */
  --font-size-3xl: 1.875rem;   /* 30px */
  --font-size-4xl: 2.25rem;    /* 36px */

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* === Border Radius === */
  --radius-sm: 0.25rem;   /* 4px */
  --radius-base: 0.375rem; /* 6px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  --radius-full: 9999px;

  /* === Shadows === */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* === 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);

  /* === Z-Index Scale === */
  --z-dropdown: 1000;
  --z-sticky: 1100;
  --z-fixed: 1200;
  --z-modal-backdrop: 1300;
  --z-modal: 1400;
  --z-popover: 1500;
  --z-tooltip: 1600;
}

/* Dark Mode Tokens */
[data-theme="dark"] {
  --color-bg-primary: var(--color-gray-950);
  --color-bg-secondary: var(--color-gray-900);
  --color-bg-tertiary: var(--color-gray-800);
  --color-bg-elevated: var(--color-gray-900);

  --color-text-primary: var(--color-gray-50);
  --color-text-secondary: var(--color-gray-400);
  --color-text-tertiary: var(--color-gray-500);

  --color-border-primary: var(--color-gray-800);
  --color-border-secondary: var(--color-gray-700);

  --color-surface-hover: rgba(255, 255, 255, 0.05);
  --color-surface-active: rgba(255, 255, 255, 0.1);
}

/* Light Mode Tokens (Default) */
:root {
  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: var(--color-gray-50);
  --color-bg-tertiary: var(--color-gray-100);
  --color-bg-elevated: #FFFFFF;

  --color-text-primary: var(--color-gray-900);
  --color-text-secondary: var(--color-gray-600);
  --color-text-tertiary: var(--color-gray-500);

  --color-border-primary: var(--color-gray-200);
  --color-border-secondary: var(--color-gray-300);

  --color-surface-hover: var(--color-gray-50);
  --color-surface-active: var(--color-gray-100);
}

/* ============================================================================
   BASE STYLES
   ========================================================================= */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

/* ============================================================================
   TYPOGRAPHY COMPONENTS
   ========================================================================= */

.heading-1 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

.heading-2 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
}

.heading-3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
}

.heading-4 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
}

.heading-5 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
}

.body-large {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
}

.body-base {
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
}

.body-small {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  color: var(--color-text-secondary);
}

.caption {
  font-size: var(--font-size-xs);
  line-height: var(--line-height-normal);
  color: var(--color-text-tertiary);
}

.text-mono {
  font-family: var(--font-family-mono);
}

/* ============================================================================
   BUTTON COMPONENTS
   ========================================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Button Variants */
.btn-primary {
  background-color: var(--color-primary-600);
  color: white;
  border-color: var(--color-primary-600);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-700);
  border-color: var(--color-primary-700);
}

.btn-primary:active:not(:disabled) {
  background-color: var(--color-primary-800);
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-surface-hover);
  border-color: var(--color-border-secondary);
}

.btn-secondary:active:not(:disabled) {
  background-color: var(--color-surface-active);
}

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

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

.btn-danger {
  background-color: var(--color-error-600);
  color: white;
  border-color: var(--color-error-600);
}

.btn-danger:hover:not(:disabled) {
  background-color: var(--color-error-700);
}

.btn-success {
  background-color: var(--color-success-600);
  color: white;
  border-color: var(--color-success-600);
}

.btn-success:hover:not(:disabled) {
  background-color: var(--color-success-700);
}

/* Button Sizes */
.btn-sm {
  padding: var(--spacing-1) var(--spacing-3);
  font-size: var(--font-size-xs);
}

.btn-md {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-base);
}

.btn-full {
  width: 100%;
}

/* ============================================================================
   CARD COMPONENTS
   ========================================================================= */

.card {
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  overflow: hidden;
}

.card-hover {
  transition: all var(--transition-base);
}

.card-hover:hover {
  border-color: var(--color-border-secondary);
  box-shadow: var(--shadow-sm);
}

.card-header {
  padding: var(--spacing-4) var(--spacing-6);
  border-bottom: 1px solid var(--color-border-primary);
}

.card-body {
  padding: var(--spacing-6);
}

.card-footer {
  padding: var(--spacing-4) var(--spacing-6);
  border-top: 1px solid var(--color-border-primary);
  background-color: var(--color-bg-secondary);
}

/* ============================================================================
   FORM COMPONENTS
   ========================================================================= */

.form-group {
  margin-bottom: var(--spacing-4);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.form-label-required::after {
  content: " *";
  color: var(--color-error-500);
}

.form-input,
.form-textarea,
.form-select {
  display: block;
  width: 100%;
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--font-size-sm);
  font-family: var(--font-family-base);
  color: var(--color-text-primary);
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

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

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  background-color: var(--color-bg-secondary);
}

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

.form-input-error {
  border-color: var(--color-error-500);
}

.form-input-error:focus {
  border-color: var(--color-error-500);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-helper {
  margin-top: var(--spacing-1);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

.form-error {
  margin-top: var(--spacing-1);
  font-size: var(--font-size-xs);
  color: var(--color-error-600);
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
}

/* ============================================================================
   BADGE COMPONENTS
   ========================================================================= */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: var(--spacing-1) var(--spacing-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  border-radius: var(--radius-base);
  white-space: nowrap;
}

.badge-primary {
  background-color: var(--color-primary-100);
  color: var(--color-primary-700);
}

.badge-success {
  background-color: var(--color-success-50);
  color: var(--color-success-700);
}

.badge-warning {
  background-color: var(--color-warning-50);
  color: var(--color-warning-700);
}

.badge-error {
  background-color: var(--color-error-50);
  color: var(--color-error-700);
}

.badge-gray {
  background-color: var(--color-gray-100);
  color: var(--color-gray-700);
}

/* ============================================================================
   TABLE COMPONENTS
   ========================================================================= */

.table-container {
  overflow-x: auto;
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.table thead {
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border-primary);
}

.table th {
  padding: var(--spacing-3) var(--spacing-4);
  text-align: left;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.table tbody tr {
  border-bottom: 1px solid var(--color-border-primary);
  transition: background-color var(--transition-fast);
}

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

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

.table td {
  padding: var(--spacing-3) var(--spacing-4);
  color: var(--color-text-primary);
}

.table-sticky-header thead {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

/* ============================================================================
   UTILITY CLASSES
   ========================================================================= */

/* Spacing */
.mt-0 { margin-top: var(--spacing-0); }
.mt-1 { margin-top: var(--spacing-1); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-3 { margin-top: var(--spacing-3); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }

.mb-0 { margin-bottom: var(--spacing-0); }
.mb-1 { margin-bottom: var(--spacing-1); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-3 { margin-bottom: var(--spacing-3); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }

.p-0 { padding: var(--spacing-0); }
.p-2 { padding: var(--spacing-2); }
.p-4 { padding: var(--spacing-4); }
.p-6 { padding: var(--spacing-6); }
.p-8 { padding: var(--spacing-8); }

/* Flexbox */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: var(--spacing-2); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }

/* Text Alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Display */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

/* Borders */
.border { border: 1px solid var(--color-border-primary); }
.border-t { border-top: 1px solid var(--color-border-primary); }
.border-b { border-bottom: 1px solid var(--color-border-primary); }
.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }

/* Shadows */
.shadow { box-shadow: var(--shadow-base); }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }