/* ===================================================================
   VARIABLES
   =================================================================== */
:root {
  /* Colors */
  --color-background: #f7f8fa;
  --color-surface: #ffffff;
  --color-text: #20232a;
  --color-primary: #175cff;
  --color-primary-hover: #1550e6;
  --color-success: #23bb86;
  --color-warning: #ffb700;
  --color-danger: #e74c3c;
  --color-gray-900: #22282f;
  --color-gray-700: #434a54;
  --color-gray-500: #9da3af;
  --color-gray-300: #e1e4ea;
  --color-gray-100: #f3f5f7;

  /* Typography */
  --font-family-sans: 'Inter', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --font-size-root: 16px;
  --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-base: 1.6;
  --line-height-heading: 1.2;

  /* Spacing (0 - 96px; increments: 0, 4, 8, 12, 16, 24, 32, 48, 64, 96) */
  --space-0: 0;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(24,32,43,0.06);
  --shadow-md: 0 4px 14px rgba(24,32,43,0.10);
  --shadow-lg: 0 12px 24px rgba(24,32,43,0.15);

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(.4,0,.2,1);
  --transition-base: 0.25s cubic-bezier(.4,0,.2,1);
}

/* ===================================================================
   RESET & NORMALIZE
   =================================================================== */
html {
  box-sizing: border-box;
  font-size: var(--font-size-root);
  scroll-behavior: smooth;
}
*, *::before, *::after {
  box-sizing: inherit;
}
body, h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd {
  margin: 0;
}
ul[role='list'], ol[role='list'] {
  list-style: none;
}
img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}
input, button, textarea, select {
  font: inherit;
}
button, [type='button'], [type='reset'], [type='submit'] {
  appearance: none;
  border: none;
  background: none;
  cursor: pointer;
}
[tabindex='-1']:focus:not(:focus-visible) {
  outline: none;
}
table {
  border-collapse: collapse;
  width: 100%;
}

/* ===================================================================
   BASE STYLES
   =================================================================== */
body {
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-md);
  line-height: var(--line-height-base);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
h1, h2, h3, h4, h5, h6 {
  color: var(--color-gray-900);
  font-weight: 700;
  line-height: var(--line-height-heading);
  margin-bottom: var(--space-3);
}
h1 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-4);
}
h2 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-3);
}
h3 {
  font-size: var(--font-size-lg);
}
h4 {
  font-size: var(--font-size-md);
}
h5 {
  font-size: var(--font-size-sm);
}
h6 {
  font-size: var(--font-size-sm);
  font-weight: 600;
}
p, ul, ol {
  margin-bottom: var(--space-4);
  max-width: 62ch;
}
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover, a:focus-visible {
  color: var(--color-primary-hover);
  text-decoration: underline;
  outline: none;
}
a:active {
  color: var(--color-primary);
}
code {
  background: var(--color-gray-100);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 95%;
}
pre {
  background: var(--color-gray-100);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  overflow-x: auto;
}
hr {
  border: none;
  border-top: 1px solid var(--color-gray-300);
  margin: var(--space-8) 0;
}

/* ===================================================================
   UTILITIES
   =================================================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin-right: auto;
  margin-left: auto;
  padding-right: var(--space-4);
  padding-left: var(--space-4);
}
.d-flex {
  display: flex;
}
.d-grid {
  display: grid;
}
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}
.gap-4 {
  gap: var(--space-4);
}
.gap-8 {
  gap: var(--space-8);
}
.mb-0 { margin-bottom: 0 !important; }
.mb-4 { margin-bottom: var(--space-4) !important; }
.mb-8 { margin-bottom: var(--space-8) !important; }
.mt-4 { margin-top: var(--space-4) !important; }
.mt-8 { margin-top: var(--space-8) !important; }
.p-4 { padding: var(--space-4) !important; }
.p-8 { padding: var(--space-8) !important; }

.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;
}

/* ===================================================================
   COMPONENTS
   =================================================================== */
.button, button, [type='button'], [type='submit'] {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  padding: 0.5em 1.5em;
  border-radius: var(--radius-md);
  border: none;
  box-shadow: var(--shadow-sm);
  transition: background var(--transition-base), box-shadow var(--transition-fast);
  font-size: var(--font-size-md);
  text-align: center;
}
.button:hover, .button:focus-visible, button:hover, button:focus-visible, [type='button']:hover, [type='button']:focus-visible, [type='submit']:hover, [type='submit']:focus-visible {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
  outline: 2px solid var(--color-primary-hover);
  outline-offset: 2px;
}
.button:active, button:active, [type='button']:active, [type='submit']:active {
  background: var(--color-primary);
}
.button:disabled, button:disabled, [type='button']:disabled, [type='submit']:disabled {
  background: var(--color-gray-300);
  color: var(--color-gray-500);
  cursor: not-allowed;
  box-shadow: none;
}
input, textarea, select {
  width: 100%;
  padding: 0.75em 1em;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  font-size: var(--font-size-md);
  min-width: 0;
  outline: none;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(23, 92, 255, 0.12);
}
input:disabled, textarea:disabled, select:disabled {
  background: var(--color-gray-100);
  color: var(--color-gray-500);
  cursor: not-allowed;
}
.card {
  background: var(--color-surface);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-fast);
}
.card:hover, .card:focus-within {
  box-shadow: var(--shadow-lg);
}

/* ===================================================================
   HEADER & FOOTER STYLES
   =================================================================== */
.site-header {
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 40;
}
.navbar {
  justify-content: space-between;
  min-height: 64px;
  align-items: center;
}
.site-logo .logo-text {
  font-weight: 900;
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  letter-spacing: 0.5px;
}
.nav-links {
  gap: var(--space-6);
  max-width: 100ch !important;
}
.nav-links a {
  font-weight: 600;
  font-size: var(--font-size-md);
  padding: 0.5em 0.1em;
}
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  width: 38px;
  height: 38px;
  justify-content: center;
  align-items: center;
  gap: 5px;
  background: none;
}
.mobile-menu-toggle .bar {
  width: 26px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 3px;
  display: block;
  transition: all var(--transition-base);
}
.site-footer {
  background: var(--color-gray-100);
  padding: var(--space-8) 0 0 0;
  margin-top: var(--space-16);
}
.footer-flex {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: start;
  gap: var(--space-8);
}
.footer-brand .logo-text {
  font-weight: 900;
  font-size: var(--font-size-md);
  letter-spacing: 0.2px;
  color: var(--color-primary);
}
.footer-links, .footer-legal-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.footer-bottom {
  text-align: center;
  padding: var(--space-4) 0;
  color: var(--color-gray-500);
  font-size: var(--font-size-sm);
}

/* Cookie Consent Banner */
.cookie-consent {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  z-index: 100;
  background: var(--color-gray-900);
  color: #fff;
  transition: transform 0.3s cubic-bezier(.4,0,.2,1);
  transform: translateY(100%);
  box-shadow: 0 -2px 8px rgba(34,40,47,0.14);
  font-size: var(--font-size-sm);
  padding: var(--space-3) 0;
}
.cookie-consent[data-visible="true"] {
  transform: translateY(0);
}
.cookie-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  padding: 0 var(--space-4);
  flex-wrap: wrap;
}
.cookie-message a {
  color: #fff;
  font-weight: 500;
  text-decoration: underline;
}
.button-sm {
  font-size: var(--font-size-sm);
  padding: 0.5em 1.25em;
}
.button-secondary {
  background: var(--color-gray-900);
  color: #fff;
  border: 1px solid #fff;
}
.button-secondary:hover,
.button-secondary:focus-visible {
  background: var(--color-danger);
  color: #fff;
  border-color: var(--color-danger);
}

@media (max-width: 1000px) {
  .navbar, .footer-flex, .cookie-container {
    flex-direction: column;
    align-items: flex-start;
  }
}
@media (max-width: 900px) {
  .nav-links {
    gap: var(--space-4);
  }
  .footer-flex {
    flex-direction: column;
    gap: var(--space-4);
    align-items: flex-start;
  }
  .cookie-container {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
  }
}
@media (max-width: 600px) {
  .footer-brand {
    margin-bottom: var(--space-2);
  }
  .site-header {
    min-height: 52px;
  }
  .navbar {
    min-height: 52px;
  }
  .mobile-menu-toggle {
    display: flex;
  }
  .nav-links {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    background: var(--color-surface);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    box-shadow: var(--shadow-md);
    padding: var(--space-4);
    display: none;
  }
  .nav-links.active {
    display: flex;
  }
}

/* ===================================================================
   ACCESSIBILITY
   =================================================================== */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* ===================================================================
   RESPONSIVE BASE
   =================================================================== */
@media (max-width: 900px) {
  .container {
    max-width: 100%;
    padding-right: var(--space-3);
    padding-left: var(--space-3);
  }
  .card {
    padding: var(--space-4);
  }
  h1 {
    font-size: var(--font-size-xl);
  }
  h2 {
    font-size: var(--font-size-lg);
  }
}
@media (max-width: 600px) {
  h1 {
    font-size: var(--font-size-lg);
  }
  h2 {
    font-size: var(--font-size-md);
  }
  .container {
    padding-right: var(--space-2);
    padding-left: var(--space-2);
  }
  .card {
    padding: var(--space-3);
  }
}