/* ====================================================
   VARIABLES
==================================================== */
:root {
  /* Colors */
  --color-background: #111419;
  --color-surface: #181c23;
  --color-text: #f5f7fa;
  --color-primary: #2A72FA;
  --color-primary-hover: #225ec7;
  --color-success: #2DD36F;
  --color-warning: #FFD600;
  --color-danger: #EA384D;
  --gray-100: #f5f7fa;
  --gray-200: #e3e7ee;
  --gray-300: #c5c9d1;
  --gray-400: #9ba5b8;
  --gray-500: #6b7280;
  --gray-600: #464b52;
  --gray-700: #22242a;
  
  /* Typography */
  --font-sans: 'Inter', 'Segoe UI', Arial, Helvetica, sans-serif;
  --font-mono: 'IBM Plex Mono', Menlo, monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-loose: 1.75;
  
  /* Spacing 0–96px (0–24 in 4px steps) */
  --space-0: 0;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;
  
  /* Misc */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px 0 rgba(24,28,35,0.15);
  --shadow-md: 0 2px 8px 0 rgba(24,28,35,0.15);
  --shadow-lg: 0 6px 24px 0 rgba(42,114,250,0.10);
  --transition-fast: 120ms cubic-bezier(0.4,0,0.2,1);
  --transition: 200ms cubic-bezier(0.4,0,0.2,1);
}

/* ====================================================
   RESET / NORMALIZE
==================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, blockquote, dl, dd {
  margin: 0;
  padding: 0;
}
ul, ol {
  list-style: none;
}
img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
  background: transparent;
}
button, input, select, textarea {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
  box-shadow: none;
  padding: 0;
  margin: 0;
}
input[type="search"]::-webkit-search-cancel-button {
  -webkit-appearance: none;
}

/* ====================================================
   BASE STYLES
==================================================== */
body {
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  color: var(--color-text);
  background: var(--color-background);
  line-height: var(--line-height-normal);
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--color-text);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}

h1 { font-size: var(--font-size-2xl); margin-top: var(--space-8); }
h2 { font-size: var(--font-size-xl); margin-top: var(--space-6); }
h3 { font-size: var(--font-size-lg); margin-top: var(--space-5); }
h4 { font-size: 1.125rem; margin-top: var(--space-4); }
h5 { font-size: var(--font-size-md); margin-top: var(--space-4); }
h6 { font-size: var(--font-size-sm); margin-top: var(--space-4); font-weight: 500; }

p {
  max-width: 68ch;
  line-height: var(--line-height-loose);
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

a {
  color: var(--color-primary);
  text-decoration: underline transparent;
  transition: color var(--transition), text-decoration-color var(--transition);
}
a:hover,
a:focus-visible {
  color: var(--color-primary-hover);
  text-decoration-color: var(--color-primary-hover);
  outline: none;
}
a:focus-visible {
  outline: 2px solid var(--color-primary-hover);
  outline-offset: 2px;
}

/* ====================================================
   UTILITIES
==================================================== */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.flex { display: flex; }
.flex-center { justify-content: center; align-items: center; }
.flex-between { justify-content: space-between; align-items: center; }
.flex-col { flex-direction: column; }
.grid { display: grid; }
.grid-gap-lg { gap: var(--space-8); }
.grid-gap-md { gap: var(--space-4); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

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

/* ====================================================
   BASIC COMPONENTS
==================================================== */
.button,
button,
input[type="submit"],
input[type="button"] {
  padding: var(--space-2) var(--space-5);
  background: var(--color-primary);
  color: #fff;
  font-weight: 500;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: none;
  transition: background var(--transition), box-shadow var(--transition), color var(--transition);
  cursor: pointer;
  outline: none;
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}
.button:hover,
button:hover,
.button:focus-visible,
button:focus-visible {
  background: var(--color-primary-hover);
  color: #fff;
  box-shadow: var(--shadow-md);
  outline: 2px solid var(--color-primary-hover);
}
.button:disabled,
button:disabled,
input[disabled] {
  opacity: 0.45;
  pointer-events: none;
  background: var(--gray-500);
  color: var(--gray-200);
}

input,
select,
textarea {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--gray-600);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}
input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(42,114,250,0.12);
  outline: none;
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-6);
  color: var(--color-text);
  transition: box-shadow var(--transition);
}
.card:hover {
  box-shadow: 0 8px 32px 0 rgba(42,114,250,0.16);
}

/* Success, Error, Warning utility classes */
.text-success { color: var(--color-success) !important; }
.text-danger  { color: var(--color-danger) !important; }
.text-warning { color: var(--color-warning) !important; }
.bg-success { background: var(--color-success) !important; color: #111419 !important; }
.bg-danger  { background: var(--color-danger) !important; color: #fff !important; }
.bg-warning { background: var(--color-warning) !important; color: #111419 !important; }

/* ====================================================
   HEADER & FOOTER STYLES (shared)
==================================================== */

/* Header */
.main-header {
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--color-primary);
  display: flex;
  gap: var(--space-2);
  align-items: center;
  letter-spacing: -0.02em;
}
.site-logo .logo-icon {
  font-size: 1.7rem;
}
.site-title {
  color: var(--color-primary);
}

.main-nav {
  position: relative;
}
.nav-list {
  display: flex;
  gap: var(--space-6);
  align-items: center;
  flex-wrap: wrap;
}
.nav-list a {
  font-weight: 500;
  font-size: var(--font-size-md);
  letter-spacing: 0.01em;
  padding: var(--space-2) var(--space-2);
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.nav-list a:hover, .nav-list a:focus-visible {
  background: var(--gray-600);
}
.cta-nav {
  background: var(--color-primary);
  color: #fff !important;
  border-radius: var(--radius-md);
  padding-left: var(--space-3);
  padding-right: var(--space-3);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}
.cta-nav:hover { box-shadow: var(--shadow-lg); background: var(--color-primary-hover); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 3px;
  background: none;
  border: none;
  padding: var(--space-2);
  cursor: pointer;
}
.nav-toggle-bar {
  width: 24px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
}

@media (max-width: 900px) {
  .nav-list {
    flex-direction: column;
    position: absolute;
    top: 120%;
    right: 0;
    min-width: 210px;
    background: var(--color-surface);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-md);
    padding: var(--space-2) 0;
    gap: var(--space-2);
    display: none;
    z-index: 120;
  }
  .nav-list.open { display: flex; }
  .nav-toggle {
    display: flex;
  }
}

/* Footer */
.main-footer {
  background: var(--color-surface);
  border-top: 2px solid var(--gray-700);
  padding: var(--space-8) 0 var(--space-12) 0;
  color: var(--gray-300);
  position: relative;
}
.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-16);
}
.footer-logo {
  font-weight: bold;
  color: var(--color-primary);
  font-size: 1.2rem;
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.footer-legal {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-3);
}
.footer-links, .footer-legal-links {
  display: flex;
  gap: var(--space-5);
  flex-wrap: wrap;
}
.footer-legal-links a { color: var(--gray-400); }
.footer-copyright {
  font-size: var(--font-size-xs);
  margin-top: var(--space-3);
  color: var(--gray-500);
}

@media (max-width: 900px) {
  .footer-content { flex-direction: column; gap: var(--space-8); align-items: flex-start; }
}
@media (max-width: 600px) {
  .footer-content { gap: var(--space-3); }
}

/* ====================================================
   COOKIE CONSENT BANNER (shared)
==================================================== */
.cookie-consent-banner {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  background: var(--color-surface);
  color: var(--gray-100);
  border-top: 2px solid var(--color-primary);
  box-shadow: 0 -2px 20px 0 rgba(42, 114, 250, 0.1);
  display: flex;
  padding: var(--space-3) var(--space-8);
  z-index: 1000;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
  gap: var(--space-6);
  transition: transform .2s;
}
.cookie-consent-content { flex: 2 1 0%; }
.cookie-consent-actions {
  display: flex;
  gap: var(--space-2);
  flex: 0 0 auto;
  align-items: center;
}
.cookie-consent-banner a { color: var(--color-primary); text-decoration: underline; }

@media (max-width: 600px) {
  .cookie-consent-banner { flex-direction: column; gap: var(--space-2); padding: var(--space-2) var(--space-3); font-size: var(--font-size-xs); }
}

/* ====================================================
   ACCESSIBILITY
==================================================== */
:focus:not(:focus-visible) {
  outline: none !important;
}
:focus-visible {
  outline: 2px solid var(--color-primary-hover);
  outline-offset: 2px;
  transition: outline-color var(--transition);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* ====================================================
   RESPONSIVE HELPERS
==================================================== */
@media (max-width: 900px) {
  .container {
    max-width: 98vw;
    padding-left: var(--space-2);
    padding-right: var(--space-2);
  }
  .card {
    padding: var(--space-4);
  }
  .grid-cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-cols-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  h1 { font-size: var(--font-size-xl); }
  h2 { font-size: var(--font-size-lg); }
  .container {
    padding-left: var(--space-1);
    padding-right: var(--space-1);
  }
  .card {
    padding: var(--space-2);
  }
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
}