:root {
  /* ==========================================================================
     Color Palette - Blacki AI Dark Theme
     ========================================================================== */
  --bg-dark: #070913;
  --bg-primary: #080b11;
  --bg-secondary: #0e1422;
  --bg-card: #0e1422;
  --bg-card-alt: #080b11;
  --bg-card-hover: #131b2e;
  --bg-input: #111827;
  --bg-modal: #0d121f;

  /* Brand Electric Blue Accents */
  --accent-blue: #2563eb;
  --accent-blue-light: #3b82f6;
  --accent-blue-dark: #1d4ed8;
  --accent-blue-glow: rgba(37, 99, 235, 0.35);
  
  /* Additional Accents */
  --accent-cyan: #38bdf8;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --accent-indigo: #6366f1;

  /* High Contrast Text Tones */
  --text-white: #ffffff;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-dim: #475569;
  --text-inverse: #030712;

  /* Borders & Dividers */
  --border-color: #1e293b;
  --border-subtle: #1f293d;
  --border-color-hover: #3b82f6;
  --border-focus: #3b82f6;

  /* Shadows */
  --shadow-glow: 0 0 25px -5px rgba(37, 99, 235, 0.35);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -2px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6), 0 4px 6px -4px rgba(0, 0, 0, 0.6);

  /* ==========================================================================
     Typography Standards (Required Hierarchy)
     ========================================================================== */
  --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;

  /* Standard Font Sizes */
  --font-size-h1: 2rem;        /* 32px - Heading Halaman Utama */
  --font-size-h2: 1.25rem;     /* 20px - Subheading / Card Heading */
  --font-size-h3: 1.125rem;    /* 18px - Section Subheading */
  --font-size-body: 1rem;      /* 16px - Body Text */
  --font-size-small: 0.875rem; /* 14px - Small Text / Input Text / Badges */
  --font-size-xs: 0.75rem;     /* 12px - Footnotes & Micro Labels */

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.65;

  /* ==========================================================================
     Component Sizing & Spacing
     ========================================================================== */
  /* Buttons */
  --btn-height-sm: 2.25rem;    /* 36px */
  --btn-height-md: 2.75rem;    /* 44px - Comfortable touch */
  --btn-height-lg: 3rem;       /* 48px */
  --btn-padding-x: 1.25rem;    /* 20px */
  --btn-padding-y: 0.625rem;   /* 10px */

  /* Inputs & Form Controls */
  --input-height: 2.75rem;     /* 44px - Standard input height */
  --input-padding-x: 0.875rem; /* 14px */
  --input-padding-y: 0.625rem; /* 10px */

  /* Border Radii */
  --radius-xs: 0.25rem;        /* 4px */
  --radius-sm: 0.375rem;       /* 6px */
  --radius-md: 0.75rem;        /* 12px - Standard */
  --radius-lg: 1rem;           /* 16px */
  --radius-xl: 1.5rem;         /* 24px - Container Cards */
  --radius-full: 9999px;

  /* Layout Containers */
  --container-max-width: 80rem; /* 1280px */
  --container-padding-mobile: 1rem;
  --container-padding-tablet: 1.5rem;
  --container-padding-desktop: 2rem;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}