/* ===========================================
   BITCOINS.COM.BR - Design System
   Tropical Finance Aesthetic
   =========================================== */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,100..1000;1,9..40,100..1000&family=Instrument+Serif:ital@0;1&display=swap');

:root {
  /* ===== Color Palette ===== */

  /* Bitcoin Orange - Primary */
  --color-btc-orange: #F7931A;
  --color-btc-orange-light: #FFB347;
  --color-btc-orange-dark: #E87D0D;
  --color-btc-orange-glow: rgba(247, 147, 26, 0.15);

  /* Brazilian Accents */
  --color-brasil-green: #009739;
  --color-brasil-green-light: #00B347;
  --color-brasil-yellow: #FFDF00;

  /* Neutrals - Warm tinted */
  --color-white: #FFFCF7;
  --color-off-white: #FFF9F0;
  --color-cream: #FEF6E8;
  --color-gray-50: #FAF8F5;
  --color-gray-100: #F5F1EB;
  --color-gray-200: #E8E2D9;
  --color-gray-300: #D4CBC0;
  --color-gray-400: #A89F94;
  --color-gray-500: #7D756B;
  --color-gray-600: #5C554D;
  --color-gray-700: #3D3835;
  --color-gray-800: #2A2624;
  --color-gray-900: #1A1715;
  --color-charcoal: #141210;

  /* Semantic Colors */
  --color-success: #22C55E;
  --color-success-light: #4ADE80;
  --color-error: #EF4444;
  --color-error-light: #F87171;
  --color-warning: #F59E0B;
  --color-info: #3B82F6;

  /* Crypto Brand Colors */
  --color-eth: #627EEA;
  --color-eth-dark: #4B5EBB;
  --color-sol: #9945FF;
  --color-sol-gradient: linear-gradient(90deg, #9945FF 0%, #14F195 100%);
  --color-xrp: #23292F;

  /* ===== Typography ===== */

  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Font Sizes - Fluid Typography */
  --text-xs: clamp(0.7rem, 0.65rem + 0.25vw, 0.8rem);
  --text-sm: clamp(0.8rem, 0.75rem + 0.25vw, 0.9rem);
  --text-base: clamp(0.95rem, 0.9rem + 0.25vw, 1.05rem);
  --text-lg: clamp(1.1rem, 1rem + 0.5vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.75rem + 2.5vw, 3.25rem);
  --text-5xl: clamp(2.75rem, 2rem + 3.75vw, 4.5rem);
  --text-6xl: clamp(3.5rem, 2.5rem + 5vw, 6rem);

  /* Font Weights */
  --font-light: 300;
  --font-regular: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.5;
  --leading-relaxed: 1.65;
  --leading-loose: 1.8;

  /* Letter Spacing */
  --tracking-tighter: -0.03em;
  --tracking-tight: -0.015em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;
  --tracking-wider: 0.05em;
  --tracking-widest: 0.1em;

  /* ===== Spacing Scale ===== */

  --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 */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  --space-32: 8rem;     /* 128px */

  /* Container */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1200px;
  --container-2xl: 1400px;

  --container-padding: clamp(1rem, 5vw, 2rem);

  /* ===== Borders & Radius ===== */

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  --border-thin: 1px;
  --border-regular: 2px;
  --border-thick: 3px;

  /* ===== Shadows ===== */

  --shadow-sm: 0 1px 2px rgba(26, 23, 21, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(26, 23, 21, 0.06), 0 2px 4px -2px rgba(26, 23, 21, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(26, 23, 21, 0.08), 0 4px 6px -4px rgba(26, 23, 21, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(26, 23, 21, 0.1), 0 8px 10px -6px rgba(26, 23, 21, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(26, 23, 21, 0.2);

  --shadow-glow-orange: 0 0 40px rgba(247, 147, 26, 0.3);
  --shadow-glow-orange-sm: 0 0 20px rgba(247, 147, 26, 0.2);

  /* ===== Transitions ===== */

  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);

  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
  --duration-slower: 600ms;

  /* ===== Z-Index Scale ===== */

  --z-behind: -1;
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
  --z-max: 9999;

  /* ===== Header Heights ===== */

  --ticker-height: 40px;
  --header-height: 72px;
  --header-total: calc(var(--ticker-height) + var(--header-height));
}

/* Dark Mode Variables (optional, for future) */
@media (prefers-color-scheme: dark) {
  :root.auto-dark {
    --color-white: #1A1715;
    --color-off-white: #1E1B19;
    --color-gray-900: #FFFCF7;
    --color-gray-800: #F5F1EB;
    --color-gray-100: #2A2624;
  }
}