/* ================================================================
   MAKECALL Voice AI Agents — Design Tokens
   CSS Custom Properties for consistent theming across all pages.
   Light mode (default) + Dark mode via [data-theme="dark"]
   ================================================================ */

:root {
  /* ── Color: Brand ── */
  --color-brand-50:  #f0edff;
  --color-brand-100: #ddd6fe;
  --color-brand-200: #c4b5fd;
  --color-brand-300: #a78bfa;
  --color-brand-400: #8b5cf6;
  --color-brand-500: #7c3aed;
  --color-brand-600: #6d28d9;
  --color-brand-700: #5b21b6;

  /* ── Color: Semantic ── */
  --color-primary:       var(--color-brand-500);
  --color-primary-hover:  var(--color-brand-600);
  --color-primary-subtle: var(--color-brand-50);

  --color-success:       #16a34a;
  --color-success-subtle:#dcfce7;
  --color-warning:       #ea580c;
  --color-warning-subtle:#fff7ed;
  --color-danger:        #dc2626;
  --color-danger-subtle: #fef2f2;
  --color-info:          #2563eb;
  --color-info-subtle:   #eff6ff;

  /* ── Color: Surface (Light) ── */
  --color-bg-0:          #ffffff;
  --color-bg-1:          #f9fafb;
  --color-bg-2:          #f3f4f6;
  --color-bg-3:          #e5e7eb;

  /* ── Color: Text (Light) ── */
  --color-text-primary:   #111827;
  --color-text-secondary: #6b7280;
  --color-text-tertiary:  #9ca3af;
  --color-text-inverse:   #ffffff;
  --color-text-link:      var(--color-brand-500);

  /* ── Color: Border (Light) ── */
  --color-border:        #e5e7eb;
  --color-border-hover:  #d1d5db;
  --color-border-focus:  var(--color-brand-400);

  /* ── Color: Sidebar (Light) ── */
  --color-sidebar-bg:       #1e1b4b;
  --color-sidebar-bg-hover: #312e81;
  --color-sidebar-text:     #c7d2fe;
  --color-sidebar-text-active: #ffffff;
  --color-sidebar-accent:   var(--color-brand-400);
  --color-sidebar-divider:  rgba(255,255,255,0.08);

  /* ── Typography ── */
  --font-sans: 'Pretendard Variable', 'Pretendard', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  --text-xs:   0.75rem;    /* 12px */
  --text-sm:   0.8125rem;  /* 13px */
  --text-base: 0.875rem;   /* 14px */
  --text-md:   1rem;       /* 16px */
  --text-lg:   1.25rem;    /* 20px */
  --text-xl:   1.5rem;     /* 24px */
  --text-2xl:  1.75rem;    /* 28px */
  --text-3xl:  2rem;       /* 32px */

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

  --leading-tight:  1.3;
  --leading-normal: 1.5;
  --leading-relaxed: 1.65;

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

  /* ── Border Radius ── */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-2xl:  24px;
  --radius-full: 9999px;

  /* ── Shadows ── */
  --shadow-xs:  0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:  0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -2px rgba(0,0,0,0.04);
  --shadow-lg:  0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
  --shadow-xl:  0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.04);
  --shadow-focus: 0 0 0 3px rgba(124, 58, 237, 0.25);

  /* ── Transitions ── */
  --duration-fast:   100ms;
  --duration-normal: 200ms;
  --duration-slow:   300ms;
  --ease-default:    cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in:         cubic-bezier(0.4, 0, 1, 1);
  --ease-out:        cubic-bezier(0, 0, 0.2, 1);

  /* ── Z-index ── */
  --z-dropdown:  100;
  --z-sticky:    200;
  --z-overlay:   300;
  --z-modal:     400;
  --z-toast:     500;
  --z-tooltip:   600;

  /* ── Layout ── */
  --sidebar-width:     260px;
  --sidebar-collapsed: 64px;
  --topbar-height:     56px;
  --content-max-width: 1280px;
}

/* ================================================================
   Dark Mode
   ================================================================ */
[data-theme="dark"] {
  --color-bg-0:          #0f111a;
  --color-bg-1:          #1a1d2e;
  --color-bg-2:          #232738;
  --color-bg-3:          #2e3348;

  --color-text-primary:   #e2e8f0;
  --color-text-secondary: #94a3b8;
  --color-text-tertiary:  #64748b;
  --color-text-inverse:   #0f111a;
  --color-text-link:      var(--color-brand-300);

  --color-border:        #2e3348;
  --color-border-hover:  #3b4160;
  --color-border-focus:  var(--color-brand-400);

  --color-primary-subtle: rgba(124, 58, 237, 0.15);
  --color-success-subtle: rgba(22, 163, 74, 0.15);
  --color-warning-subtle: rgba(234, 88, 12, 0.15);
  --color-danger-subtle:  rgba(220, 38, 38, 0.15);
  --color-info-subtle:    rgba(37, 99, 235, 0.15);

  --color-sidebar-bg:       #0b0d14;
  --color-sidebar-bg-hover: #1a1d2e;
  --color-sidebar-divider:  rgba(255,255,255,0.06);

  --shadow-xs:  0 1px 2px rgba(0,0,0,0.3);
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4), 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md:  0 4px 6px -1px rgba(0,0,0,0.4), 0 2px 4px -2px rgba(0,0,0,0.3);
  --shadow-lg:  0 10px 15px -3px rgba(0,0,0,0.4), 0 4px 6px -4px rgba(0,0,0,0.3);
  --shadow-xl:  0 20px 25px -5px rgba(0,0,0,0.5), 0 8px 10px -6px rgba(0,0,0,0.4);
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-1);
  min-height: 100vh;
}

a {
  color: var(--color-text-link);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-default);
}
a:hover { color: var(--color-primary-hover); }

::selection {
  background-color: var(--color-brand-100);
  color: var(--color-brand-700);
}

[data-theme="dark"] ::selection {
  background-color: rgba(139, 92, 246, 0.3);
  color: #e2e8f0;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--color-text-tertiary); }