/* ==========================================================================
   FileToolKit - CSS Design System Variables
   Emerald & Charcoal Theme with Dark Mode
   ========================================================================== */

:root {
  /* Color Palette - Light Mode */
  --bg-primary: #F7F8F5;
  --bg-card: #FFFFFF;
  --bg-card-hover: #FCFDFC;
  --bg-muted: #EFF3F0;
  --bg-surface: #FFFFFF;
  --bg-glass: rgba(255, 255, 255, 0.85);

  --text-primary: #17201C;
  --text-secondary: #64706A;
  --text-muted: #8E9B95;
  --text-inverse: #FFFFFF;

  --emerald-primary: #16A36A;
  --emerald-hover: #108354;
  --emerald-dark: #0D6943;
  --emerald-tint: #E8F7EF;
  --emerald-border: #BAE6CF;
  --emerald-glow: rgba(22, 163, 106, 0.25);

  --dark-surface: #101814;
  --dark-surface-elevated: #18231E;

  --border-color: #DCE4DF;
  --border-subtle: #E8EFEA;
  --border-focus: #16A36A;

  --status-success: #16A36A;
  --status-success-bg: #E8F7EF;
  --status-warning: #D99521;
  --status-warning-bg: #FEF6E9;
  --status-error: #D84A4A;
  --status-error-bg: #FDECEC;
  --status-info: #2563EB;
  --status-info-bg: #EFF6FF;

  /* Typography */
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, Monaco, 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-size-5xl: 3rem;       /* 48px */

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.65;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border Radius */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-2xl: 28px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(23, 32, 28, 0.04);
  --shadow-sm: 0 2px 4px rgba(23, 32, 28, 0.06);
  --shadow-md: 0 4px 12px rgba(23, 32, 28, 0.08);
  --shadow-lg: 0 10px 25px rgba(23, 32, 28, 0.1);
  --shadow-xl: 0 20px 40px rgba(23, 32, 28, 0.12);
  --shadow-emerald: 0 6px 20px rgba(22, 163, 106, 0.25);
  --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.04);

  /* 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);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-max-width: 1280px;
  --header-height: 72px;
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-modal: 1050;
  --z-toast: 1100;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --bg-primary: #0D1411;
  --bg-card: #141F1A;
  --bg-card-hover: #192721;
  --bg-muted: #18231E;
  --bg-surface: #101814;
  --bg-glass: rgba(20, 31, 26, 0.88);

  --text-primary: #F0F4F2;
  --text-secondary: #9EAEA6;
  --text-muted: #6B7B73;
  --text-inverse: #0D1411;

  --emerald-primary: #16A36A;
  --emerald-hover: #1DBB7C;
  --emerald-dark: #108354;
  --emerald-tint: #132A1F;
  --emerald-border: #1F4D37;
  --emerald-glow: rgba(22, 163, 106, 0.35);

  --dark-surface: #0A0F0D;
  --dark-surface-elevated: #111A15;

  --border-color: #23342C;
  --border-subtle: #1C2B24;
  --border-focus: #1DBB7C;

  --status-success: #1DBB7C;
  --status-success-bg: #132A1F;
  --status-warning: #E5A330;
  --status-warning-bg: #2B210F;
  --status-error: #E55858;
  --status-error-bg: #2D1414;
  --status-info: #3B82F6;
  --status-info-bg: #12213D;

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.45);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.55);
  --shadow-emerald: 0 6px 20px rgba(22, 163, 106, 0.3);
}