/* ========================================================================== */
/* VARIABLES                                                                 */
/* ========================================================================== */
:root {
  /* Color Palette */
  --color-background: #f9fbfd;
  --color-surface: #ffffff;
  --color-text: #1a2233;
  --color-primary: #3b82f6; /* blue-500 */
  --color-primary-hover: #2563eb; /* blue-600 */
  --color-success: #22c55e;
  --color-warning: #f59e42;
  --color-danger: #ef4444;
  --color-neutral-100: #f3f4f6;
  --color-neutral-200: #e5e7eb;
  --color-neutral-300: #d1d5db;
  --color-neutral-400: #9ca3af;
  --color-neutral-500: #6b7280;
  --color-neutral-700: #374151;
  /* Typography */
  --font-sans: 'Inter', 'Segoe UI', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', Menlo, monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --line-height-base: 1.6;
  --line-length: 65ch;
  /* Spacing scale */
  --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;
  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(0,16,54,0.02);
  --shadow-md: 0 1.5px 6px rgba(0,16,54,0.08);
  --shadow-lg: 0 6px 24px rgba(0,16,54,0.12);
  /* Transition durations */
  --transition-fast: 120ms;
  --transition-base: 220ms;
  --transition-slow: 390ms;
}

/* ========================================================================== */
/* RESET / NORMALIZE                                                          */
/* ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body, h1, h2, h3, h4, h5, h6, p, ul, ol, figure, blockquote {
  margin: 0;
}
ul, ol {
  padding-left: var(--space-4);
}
img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}
table {
  border-collapse: collapse;
  width: 100%;
}
input, button, textarea, select {
  font: inherit;
}
button, [type="button"], [type="reset"], [type="submit"] {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}
:focus:not(:focus-visible) {
  outline: none;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  line-height: 1.2;
}
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);
}
h5 {
  font-size: var(--font-size-base);
}
h6 {
  font-size: var(--font-size-sm);
}

p {
  margin-bottom: var(--space-4);
  max-width: var(--line-length);
  line-height: 1.7;
}
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover,
a:focus-visible {
  color: var(--color-primary-hover);
  outline: none;
}
a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  text-decoration: none;
}

/* ========================================================================== */
/* UTILITIES                                                                  */
/* ========================================================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin-right: auto;
  margin-left: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}
.d-flex            { display: flex; }
.d-grid            { display: grid; }
.flex-wrap         { flex-wrap: wrap; }
.justify-between   { justify-content: space-between; }
.justify-center    { justify-content: center; }
.align-center      { align-items: center; }
.gap-4             { gap: var(--space-4); }
.gap-8             { gap: var(--space-8); }
.text-center       { text-align: center; }

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

/* Spacing Utilities */
.mt-4 { margin-top: var(--space-4); }
.mb-4 { margin-bottom: var(--space-4); }
.pt-4 { padding-top: var(--space-4); }
.pb-4 { padding-bottom: var(--space-4); }

/* ========================================================================== */
/* COMPONENTS                                                                 */
/* ========================================================================== */
/* Buttons */
.button, button, [type="button"], [type="submit"] {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: 600;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-md);
  border: none;
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}
.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);
  outline-offset: 2px;
}
.button:disabled,
button:disabled,
[type="button"]:disabled,
[type="submit"]:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

/* Inputs */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="number"],
select,
textarea {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-neutral-300);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--color-text);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(59,130,246,0.15);
}
input:disabled,
select:disabled,
textarea:disabled {
  background: var(--color-neutral-100);
  color: var(--color-neutral-400);
  cursor: not-allowed;
}

/* Cards */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-6);
  transition: box-shadow var(--transition-fast);
  border: 1px solid var(--color-neutral-200);
}
.card:hover,
.card:focus-within {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

/* ========================================================================== */
/* ACCESSIBILITY & MOTION                                                     */
/* ========================================================================== */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto !important;
  }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ========================================================================== */
/* HEADER & FOOTER STYLES                                                     */
/* ========================================================================== */
/* Header Styles */
.site-header {
  background: #fff;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.site-logo {
  font-size: var(--font-size-xl);
  font-weight: 800;
  text-decoration: none;
  color: var(--color-primary-hover);
  letter-spacing: 0.02em;
}
.main-nav {
  min-height: 64px;
  gap: var(--space-6);
}
.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-4);
  transition: max-height var(--transition-base) ease;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  gap: 3px;
  margin-left: var(--space-4);
}
.menu-bar {
  width: 28px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 3px;
  display: block;
  transition: background var(--transition-base);
}
/* Mobile Navigation Styles */
@media (max-width: 900px) {
  .main-nav {
    flex-wrap: wrap;
  }
  .mobile-menu-toggle {
    display: flex;
  }
  .nav-list {
    max-height: 0;
    overflow: hidden;
    flex-direction: column;
    background: #fff;
    box-shadow: var(--shadow-md);
    position: absolute;
    right: 0;
    top: 65px;
    min-width: 220px;
    border-radius: var(--radius-lg);
    transition: max-height var(--transition-base) ease;
  }
  .nav-list.open {
    max-height: 500px;
    padding: var(--space-4);
  }
}

/* Footer Styles */
.site-footer {
  background: #f3f4f6;
  font-size: var(--font-size-base);
  border-top: 1px solid var(--color-neutral-200);
  position: relative;
  margin-top: var(--space-24);
}
.footer-main {
  padding: var(--space-8) 0;
}
.footer-logo {
  font-weight: 700;
  color: var(--color-primary-hover);
  font-size: var(--font-size-lg);
  letter-spacing: 0.02em;
}
.footer-links, .legal-links {
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-4);
}
.footer-links a, .legal-links a {
  color: var(--color-neutral-700);
  text-decoration: none;
  font-weight: 500;
}
.footer-links a:hover, .legal-links a:hover, .footer-links a:focus-visible, .legal-links a:focus-visible {
  color: var(--color-primary-hover);
  text-decoration: underline;
}
.footer-copyright {
  font-size: var(--font-size-sm);
  color: var(--color-neutral-500);
  margin-bottom: var(--space-2);
}

/* Cookie Consent Banner */
.cookie-consent-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100vw;
  background: #ffffff;
  box-shadow: 0 -2px 12px rgba(59,130,246,.06);
  border-top: 2px solid var(--color-neutral-200);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  z-index: 9999;
  padding: var(--space-3) var(--space-4);
  animation: slideUpBanner 270ms cubic-bezier(.6,1.4,.44,1.02);
}
@keyframes slideUpBanner {
  from { transform: translateY(120%); opacity: 0; } 
  to   { transform: translateY(0); opacity: 1; }
}
.cookie-consent-banner p {
  margin-bottom: var(--space-2);
  color: var(--color-neutral-700);
  text-align: center;
}
.cookie-consent-actions {
  display: flex;
  gap: var(--space-3);
}
.cookie-consent-actions .button {
  border-radius: var(--radius-sm);
  min-width: 110px;
  padding: var(--space-2) var(--space-4);
}
.button-reject {
  background: var(--color-neutral-300);
  color: var(--color-text);
}
.button-reject:hover, .button-reject:focus-visible {
  background: var(--color-neutral-400);
  color: #fff;
}

/* Form Accessibility Fix */
input:focus:invalid {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 2px rgba(239,68,68,0.12);
}

/* General Responsive Tweaks for Header/Footer */
@media (max-width: 700px) {
  .footer-main {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-6);
  }
}

/* ========================================================================== */
/* RESPONSIVE DESIGN                                                          */
/* ========================================================================== */
@media (max-width: 768px) {
  .container {
    padding-left: var(--space-2);
    padding-right: var(--space-2);
  }
  .card {
    padding: var(--space-4);
  }
  h1 { font-size: var(--font-size-2xl); }
  h2 { font-size: var(--font-size-xl); }
}