/* =======================================================
  VARIABLES
======================================================= */
:root {
  /* Colors */
  --color-background: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #22292f;
  --color-primary: #0667d6;
  --color-primary-hover: #004ea2;
  --color-success: #10b981;
  --color-warning: #f59e42;
  --color-danger: #ef4444;
  --color-neutral-100: #f2f4f7;
  --color-neutral-200: #e5e7eb;
  --color-neutral-300: #d1d5db;
  --color-neutral-500: #6b7280;
  --color-neutral-800: #1e293b;
  /* Typography */
  --font-sans: 'Inter', 'Segoe UI', Arial, sans-serif;
  --font-heading: 'Montserrat', 'Segoe UI', Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --line-height-tight: 1.15;
  --line-height-base: 1.6;
  --line-height-relaxed: 1.75;
  /* Spacing */
  --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, shadows, transitions */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px 0 rgba(16,30,54,0.07);
  --shadow-md: 0 2px 8px 0 rgba(16,30,54,0.12);
  --shadow-lg: 0 4px 32px 0 rgba(16, 30, 54, 0.16);
  --transition-fast: 120ms cubic-bezier(.4,0,.2,1);
  --transition-base: 220ms cubic-bezier(.4,0,.2,1);
  --transition-slow: 400ms cubic-bezier(.4,0,.2,1);
}

/* =======================================================
  RESET / NORMALIZE
======================================================= */
* , *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  text-size-adjust: 100%;
}

body, h1, h2, h3, h4, h5, h6, p, ul, ol, 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;
}

input, button, textarea, select {
  font: inherit;
  background: none;
  border-radius: 0;
  border: none;
  outline: none;
  color: inherit;
}

button {
  border: none;
  background: none;
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Remove tap highlight on mobile */
html {
  -webkit-tap-highlight-color: transparent;
}

/* Remove number input arrows */
input[type=number]::-webkit-outer-spin-button,
input[type=number]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
input[type=number] {
  -moz-appearance: textfield;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-2);
  color: var(--color-text);
}
h1 { font-size: var(--font-size-3xl); margin-top: var(--space-8); }
h2 { font-size: var(--font-size-2xl); margin-top: var(--space-6); }
h3 { font-size: var(--font-size-xl); margin-top: var(--space-4); }
h4 { font-size: var(--font-size-lg); margin-top: var(--space-4); }
h5 { font-size: var(--font-size-base); margin-top: var(--space-3); }
h6 { font-size: var(--font-size-sm); margin-top: var(--space-2); }

p {
  margin-bottom: var(--space-4);
  max-width: 65ch;
  line-height: var(--line-height-relaxed);
  color: var(--color-text);
}

a {
  color: var(--color-primary);
  transition: color var(--transition-fast);
  text-underline-offset: 2px;
  font-weight: 500;
}
a:hover,
a:active {
  color: var(--color-primary-hover);
  text-decoration: underline;
}
a:focus-visible {
  outline: 2px solid var(--color-primary-hover);
  outline-offset: 2px;
}

/* =======================================================
  UTILITIES
======================================================= */
.container {
  max-width: 1152px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.flex {
  display: flex;
}
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}
.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.grid {
  display: grid;
  gap: var(--space-6);
}
.mt-0 { margin-top: var(--space-0); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-0 { margin-bottom: var(--space-0); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }

.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, .btn {
  display: inline-block;
  padding: 0.625em 1.5em;
  font-size: var(--font-size-base);
  font-family: var(--font-sans);
  font-weight: 600;
  color: #fff;
  background-color: var(--color-primary);
  border: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: background var(--transition-fast), box-shadow var(--transition-fast), color var(--transition-fast);
  text-align: center;
  user-select: none;
}
.button:hover, .btn:hover,
.button:focus-visible, .btn:focus-visible {
  background-color: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
  outline: 2px solid var(--color-primary-hover);
  outline-offset: 2px;
}
.button:disabled,
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
}

input, textarea, select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-neutral-300);
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-base);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(6,103,214,0.13);
  outline: none;
}
input:disabled,
textarea:disabled,
select:disabled {
  background: var(--color-neutral-100);
  opacity: 0.7;
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-6);
  transition: box-shadow var(--transition-base);
}
.card:hover,
.card:focus-within {
  box-shadow: var(--shadow-lg);
}

/* =======================================================
  ACCESSIBILITY
======================================================= */
:focus-visible {
  outline: 2px solid var(--color-primary-hover);
  outline-offset: 2px;
}

/* =======================================================
  HEADER & FOOTER styles
======================================================= */
.site-header {
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-nav {
  height: 64px;
}
.site-logo .site-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-primary);
  font-weight: 700;
  letter-spacing: -0.5px;
}
.site-nav {
  display: flex;
  gap: var(--space-6);
  align-items: center;
}
.site-nav li a {
  font-weight: 500;
  padding: 8px 12px;
  transition: color var(--transition-fast), background var(--transition-fast);
  border-radius: var(--radius-md);
}
.site-nav li a:focus-visible {
  background: var(--color-neutral-200);
}
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  margin-right: -8px;
}
.hamburger {
  width: 28px;
  height: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.hamburger::before, .hamburger::after, .hamburger {
  content: '';
  display: block;
  width: 100%;
  height: 4px;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

/* Footer */
.site-footer {
  background: var(--color-neutral-200);
  padding: var(--space-12) 0 var(--space-4);
  margin-top: var(--space-12);
}
.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-8);
  align-items: flex-start;
  border-bottom: 1px solid var(--color-neutral-300);
  padding-bottom: var(--space-6);
}
.footer-brand .footer-logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--color-primary-hover);
  font-weight: 700;
  letter-spacing: -0.5px;
}
.footer-tagline {
  font-size: var(--font-size-sm);
  color: var(--color-neutral-500);
  margin-top: var(--space-2);
}
.footer-nav ul, .footer-legal ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.footer-nav li a, .footer-legal li a {
  color: var(--color-neutral-800);
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: 2px 0;
  transition: color var(--transition-fast);
}
.footer-nav li a:hover, .footer-legal li a:hover {
  color: var(--color-primary);
}
.copyright {
  text-align: center;
  margin-top: var(--space-6);
  color: var(--color-neutral-500);
  font-size: var(--font-size-xs);
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100vw;
  background: var(--color-surface);
  box-shadow: 0 -2px 14px #0001, 0 0 2px #00000022;
  border-top: 1.5px solid var(--color-neutral-300);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  z-index: 2000;
  padding: var(--space-4) var(--space-8);
  transition: transform var(--transition-base), opacity var(--transition-base);
  font-size: var(--font-size-base);
}
.cookie-banner[aria-hidden="true"] {
  opacity: 0;
  pointer-events: none;
  transform: translateY(100%);
  display: none;
}
.cookie-actions {
  display: flex;
  gap: var(--space-4);
}
.cookie-banner p {
  margin: 0;
  font-size: var(--font-size-sm);
}
.cookie-banner a {
  text-decoration: underline;
  color: var(--color-primary-hover);
}

/* ------- Responsive Header & Footer Styles -------- */
@media (max-width: 1024px) {
  /* header/footer not affected */
}
@media (max-width: 650px) {
  .footer-content { flex-direction: column; gap: var(--space-4); align-items: flex-start;}
  .cookie-banner { flex-direction: column; gap: var(--space-2); align-items: flex-start; }
}
@media (max-width: 600px) {
  .header-nav { height: auto; }
  .site-nav {
    flex-direction: column;
    gap: var(--space-4);
    background: var(--color-surface);
    position: fixed;
    top: 60px;
    right: 0;
    left: 0;
    padding: var(--space-8) 0 var(--space-4) 0;
    box-shadow: var(--shadow-md);
    border-top: 1.5px solid var(--color-neutral-200);
    transform: translateY(-120%);
    transition: transform var(--transition-fast);
    z-index: 1200;
    opacity: 0;
    pointer-events: none;
  }
  .site-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  .mobile-nav-toggle {
    display: block;
    z-index: 1500;
    margin-left: var(--space-2);
  }
  .site-nav {
    width: 100vw;
    max-width: none;
  }
  .header-nav {
    flex-direction: row;
    align-items: center;
    min-height: 60px;
  }
}
@media (max-width: 390px) {
  .cookie-banner {
    font-size: var(--font-size-xs);
    padding: var(--space-2);
  }
}

@media (max-width: 768px) {
  .container {
    padding-left: var(--space-2);
    padding-right: var(--space-2);
  }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.375rem; }
  h3 { font-size: 1.125rem; }
  h4 { font-size: 1rem; }
}