/* ===========================
   BASE CSS - Design Tokens & Reset
   =========================== */

/* CSS Variables / Design Tokens */
:root {
  /* Colors */
  --color-primary: #CF1A1C;
  --color-primary-dark: #710001;
  --color-primary-light: #CF1A1B;

  --color-text-white: #FFFFFF;
  --color-text-main: #CFCFCF;
  --color-text-secondary: #808080;
  --color-text-tertiary: #666666;

  --color-background-main: #0D0D0D;
  --color-background-dark: #0C0C0C;
  --color-background-light: #131313;
  --color-background-black: #101010;

  --color-border: #504D4D;
  --color-border-light: rgba(255, 255, 255, 0.1);

  /* Gradients */
  --gradient-primary: linear-gradient(180deg, rgba(207, 26, 28, 1) 0%, rgba(160, 0, 0, 1) 100%);
  --gradient-button-primary: linear-gradient(180deg, rgba(255, 255, 255, 0.3) 0%, rgba(106, 11, 11, 0.9) 100%);
  --gradient-button-secondary: linear-gradient(174deg, rgba(207, 26, 28, 1) 0%, rgba(113, 0, 1, 1) 100%);
  --gradient-text: linear-gradient(180deg, rgba(255, 255, 255, 1) 0%, rgba(153, 153, 153, 1) 100%);
  --gradient-text-muted: linear-gradient(192deg, rgba(255, 255, 255, 1) 0%, rgba(192, 192, 192, 1) 100%);
  --gradient-glass: radial-gradient(50% 50% at 7% 20%, rgba(82, 82, 82, 0.21) 0%, rgba(36, 36, 36, 0.21) 100%);
  --gradient-glass-dark: radial-gradient(50% 50% at 7% 20%, rgba(32, 32, 32, 0.78) 0%, rgba(18, 18, 18, 0.78) 100%);

  --elements-transparent-fill: rgba(13, 13, 13, 0.01);
  --elements-Buttons-Text-default: linear-gradient(180deg, #FFF 29.17%, #999 100%);
  --elements-Buttons-Secondary-stroke-default: linear-gradient(138deg, #CF1A1C 2.75%, #710001 94.15%);

  /* Typography */
  --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-secondary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Font Sizes */
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-md: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-h6: 14px;
  --font-size-h5: 18px;
  --font-size-h4: 24px;
  --font-size-h3: 32px;
  --font-size-h2: 48px;
  --font-size-h1: 56px;
  --font-size-h0: 72px;

  /* Line Heights */
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --spacing-4xl: 80px;
  --spacing-5xl: 120px;
  --spacing-6xl: 150px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 20px;
  --radius-xl: 30px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-button: 0px 1px 3px rgba(0, 0, 0, 0.25);
  --shadow-card: 0px 4.56px 6.52px rgba(0, 0, 0, 0.1),
                 0px 21.57px 25.48px rgba(0, 0, 0, 0.16),
                 0px 56px 80px rgba(0, 0, 0, 0.26);
  --shadow-inset: inset 0px 3px 4px rgba(0, 0, 0, 0.25);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Z-Index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
}

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

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

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-secondary);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  color: var(--color-text-main);
  background-color: var(--color-background-main);
  min-height: 100vh;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--font-primary);
  font-weight: 400;
  line-height: var(--line-height-tight);
  color: var(--color-text-white);
}

h1 { font-size: var(--font-size-h1); }
h2 { font-size: var(--font-size-h2); }
h3 { font-size: var(--font-size-h4); }
h4 { font-size: var(--font-size-h5); }
h5 { font-size: var(--font-size-h6); }
h6 { font-size: var(--font-size-sm); }

p {
  margin: 0 0 1em;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-primary);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  cursor: pointer;
  border: none;
  background: transparent;
  font: inherit;
  color: inherit;
  padding: 0;
}

input, textarea, select {
  font: inherit;
  color: inherit;
  border: none;
  background: transparent;
  outline: none;
}

ul, ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* Utility Classes */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-4xl);
}

.text-gradient {
  background: var(--gradient-text-muted);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Responsive Typography using clamp() */
@media (max-width: 768px) {
  :root {
    --font-size-h1: clamp(36px, 10vw, 56px);
    --font-size-h2: clamp(28px, 8vw, 48px);
    --font-size-h3: clamp(24px, 6vw, 32px);
    --font-size-h4: clamp(20px, 5vw, 24px);
  }

  .container {
    padding: 0 var(--spacing-lg);
  }
}