/* ==========================================================================
   EquiFlow - Design Tokens & Theme Variables
   Original financial research platform visual identity.
   ========================================================================== */

:root {
  /* Brand Accents */
  --brand-primary: #0284c7;        /* Sky 600 */
  --brand-primary-hover: #0369a1;  /* Sky 700 */
  --brand-secondary: #0ea5e9;      /* Sky 500 */
  --brand-glow: rgba(14, 165, 233, 0.18);

  /* Semantic Colors */
  --color-success: #10b981;        /* Emerald 500 */
  --color-success-bg: rgba(16, 185, 129, 0.12);
  --color-warning: #f59e0b;        /* Amber 500 */
  --color-warning-bg: rgba(245, 158, 11, 0.12);
  --color-danger: #ef4444;         /* Red 500 */
  --color-danger-bg: rgba(239, 68, 68, 0.12);
  --color-info: #3b82f6;           /* Blue 500 */
  --color-info-bg: rgba(59, 130, 246, 0.12);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Courier New', monospace;

  /* Font Sizes */
  --text-2xs: 0.6875rem; /* 11px */
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.8125rem;  /* 13px */
  --text-base: 0.875rem; /* 14px */
  --text-md: 0.9375rem;  /* 15px */
  --text-lg: 1rem;       /* 16px */
  --text-xl: 1.125rem;   /* 18px */
  --text-2xl: 1.25rem;   /* 20px */
  --text-3xl: 1.5rem;    /* 24px */
  --text-4xl: 1.875rem;  /* 30px */

  /* Radii */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-Indices */
  --z-sticky: 100;
  --z-dropdown: 200;
  --z-drawer: 300;
  --z-modal: 400;
  --z-toast: 500;
}

/* Light Theme (Default clean financial workstation) */
:root, [data-theme="light"] {
  --bg-app: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #ffffff;
  --bg-surface-muted: #f1f5f9;
  --bg-surface-subtle: #f8fafc;
  --bg-surface-hover: #e2e8f0;

  --border-subtle: #e2e8f0;
  --border-default: #cbd5e1;
  --border-strong: #94a3b8;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-faint: #94a3b8;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.06);

  --table-stripe: #f8fafc;
  --table-hover: #f1f5f9;
  --table-sticky-bg: #ffffff;
}

/* Dark Theme (Sleek Bloomberg/Terminal Dark) */
[data-theme="dark"] {
  --bg-app: #090d16;
  --bg-surface: #0f172a;
  --bg-surface-elevated: #1e293b;
  --bg-surface-muted: #1e293b;
  --bg-surface-subtle: #111827;
  --bg-surface-hover: #334155;

  --border-subtle: #1e293b;
  --border-default: #334155;
  --border-strong: #475569;

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-faint: #64748b;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7);

  --table-stripe: #0d1527;
  --table-hover: #1e293b;
  --table-sticky-bg: #0f172a;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-app);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Utility Helpers */
.mono { font-family: var(--font-mono); }
.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-positive { color: var(--color-success); }
.text-negative { color: var(--color-danger); }

.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }

.hidden { display: none !important; }