/*
 * Fondation Althea – design system
 *
 * This stylesheet defines the colour palette, typography scale and
 * components used across the site. Variables make it easy to adjust
 * colours and spacing. Classes are kept small and composable so
 * maintainers can add new sections without duplicating lots of rules.
 *
 * The design respects WCAG 2.1/2.2 guidelines on contrast and
 * interactive focus visibility. Keep these values in mind when
 * customising colours.
 */

:root {
  /* Colour palette */
  --color-primary: #0f4c81; /* deep blue evoking trust and vision */
  --color-secondary: #009688; /* teal for health and calm */
  --color-accent: #ffc107; /* warm yellow for highlights */
  --color-bg: #ffffff; /* white background */
  --color-surface: #f9fafb; /* light gray backgrounds for cards */
  --color-text: #1f2937; /* dark gray for comfortable reading */
  --color-muted: #6b7280; /* muted text */

  /* Typography */
  --font-family-base: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-weight-normal: 400;
  --font-weight-bold: 600;
  --line-height: 1.6;
  --font-size-base: 16px;

  /* Sizing */
  --container-max-width: 1200px;
  --spacing-small: 0.5rem;
  --spacing: 1rem;
  --spacing-large: 2rem;
  --border-radius: 0.5rem;
  --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

html {
  box-sizing: border-box;
  scroll-behavior: smooth;
}

*, *::before, *::after {
  box-sizing: inherit;
}

body {
  margin: 0;
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-bg);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease-in-out;
}

a:hover,
a:focus {
  color: var(--color-secondary);
  outline: none;
}

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

/* Containers */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing);
  padding-right: var(--spacing);
}

/* Grid utilities */
.grid {
  display: grid;
  gap: var(--spacing-large);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

/* Header & navigation */
header {
  background-color: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 8px;
  z-index: 200;
  border-radius: 0 0 var(--border-radius) var(--border-radius);
}
.skip-link:focus {
  top: 0;
}

.nav {
  display: flex;
  justify-content: space-between;
  /* Align nav items to the top so that the menu aligns with the vertical language selector */
  align-items: flex-start;
  padding-top: var(--spacing);
  padding-bottom: var(--spacing);
}

.nav-logo {
  display: flex;
  align-items: center;
}

.nav-logo img {
  /*
   * Increase the logo height for better visibility. Using a larger height
   * ensures that the logo appears crisp and readable on high‑resolution
   * displays while still respecting the flexible width. The width is set
   * to auto so the SVG logo retains its aspect ratio.
   */
  height: 64px;
  width: auto;
  margin-right: var(--spacing);
}

.nav-toggle {
  background: none;
  border: none;
  display: none;
  cursor: pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  display: block;
  width: 24px;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: 2px;
  transition: transform 0.3s ease;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: relative;
}
.nav-toggle span::before {
  top: -8px;
}
.nav-toggle span::after {
  top: 8px;
}

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu li {
  margin-left: var(--spacing);
}

.nav-menu a {
  font-weight: var(--font-weight-bold);
  padding: var(--spacing-small) var(--spacing);
  border-radius: var(--border-radius);
  transition: background 0.2s;
}

.nav-menu a:hover,
.nav-menu a:focus {
  background-color: var(--color-surface);
  outline: none;
}

/* Language switcher */
/* Language switcher: stack the language links vertically */
.lang-switch {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.25rem;
  font-size: 0.875rem;
  margin-left: var(--spacing);
}
.lang-switch a {
  color: var(--color-muted);
  text-decoration: none;
}
.lang-switch a:hover,
.lang-switch a:focus {
  color: var(--color-primary);
  text-decoration: underline;
  outline: none;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }
  .nav-menu {
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  }
  .nav-menu.open {
    max-height: 400px;
  }
  .nav-menu li {
    margin: 0;
  }
  .nav-menu a {
    padding: var(--spacing);
    display: block;
  }
}

/* Hero section */
.hero {
  background-color: var(--color-surface);
  padding-top: 4rem;
  padding-bottom: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.hero-content {
  flex: 1 1 400px;
  padding-right: var(--spacing-large);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-top: 0;
  color: var(--color-primary);
}

.hero p {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-large);
  color: var(--color-muted);
}

.hero-buttons {
  display: flex;
  gap: var(--spacing);
  flex-wrap: wrap;
}

.hero img {
  flex: 1 1 300px;
  max-width: 450px;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-weight: var(--font-weight-bold);
  border-radius: var(--border-radius);
  border: none;
  cursor: pointer;
  text-align: center;
  transition: background-color 0.2s, color 0.2s;
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #fff;
}
.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--color-secondary);
  outline: none;
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: #fff;
}
.btn-secondary:hover,
.btn-secondary:focus {
  background-color: var(--color-primary);
  outline: none;
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-ghost:hover,
.btn-ghost:focus {
  background-color: var(--color-primary);
  color: #fff;
  outline: none;
}

/* Sections */
section {
  padding-top: 3rem;
  padding-bottom: 3rem;
}

.section-title {
  font-size: 2rem;
  margin-top: 0;
  margin-bottom: 1.5rem;
  text-align: center;
  color: var(--color-primary);
}

.section-subtitle {
  font-size: 1rem;
  text-align: center;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  color: var(--color-muted);
}

/* Card component */
.card {
  background-color: var(--color-surface);
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}
.card-body {
  padding: var(--spacing);
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-body h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}
.card-body p {
  flex: 1;
  margin-bottom: 1rem;
  color: var(--color-muted);
}
.card-body .btn {
  align-self: flex-start;
}

/* Impact stats */
.stats {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-large);
}
.stat {
  text-align: center;
}
.stat-number {
  font-size: 2.5rem;
  color: var(--color-secondary);
  font-weight: var(--font-weight-bold);
}
.stat-label {
  font-size: 1rem;
  color: var(--color-muted);
}

/* Footer */
footer {
  background-color: var(--color-surface);
  padding-top: 2rem;
  padding-bottom: 2rem;
  color: var(--color-muted);
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-large);
  justify-content: space-between;
  align-items: flex-start;
}
.footer-column {
  flex: 1 1 200px;
}
.footer-column h4 {
  color: var(--color-primary);
  margin-top: 0;
  margin-bottom: 0.5rem;
}
.footer-links ul {
  list-style: none;
  padding-left: 0;
  margin-top: 0;
  margin-bottom: 0;
}
.footer-links li {
  margin-bottom: 0.5rem;
}
.footer-links a {
  color: var(--color-muted);
}
.footer-links a:hover {
  color: var(--color-primary);
}

.social {
  display: flex;
  gap: var(--spacing);
  margin-top: var(--spacing);
}
.social a {
  display: inline-block;
  width: 32px;
  height: 32px;
  background-color: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s;
}
.social a:hover {
  background-color: var(--color-secondary);
}

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.875rem;
  color: var(--color-muted);
}

/* Donation quick buttons in hero */
.donation-quick {
  display: flex;
  gap: var(--spacing);
  margin-top: var(--spacing);
  margin-bottom: var(--spacing);
}
.donation-quick a {
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-weight: var(--font-weight-bold);
  background-color: var(--color-accent);
  color: var(--color-text);
  text-decoration: none;
  transition: background-color 0.2s, color 0.2s;
}
.donation-quick a:hover,
.donation-quick a:focus {
  background-color: var(--color-secondary);
  color: #fff;
}

/* Newsletter form */
.newsletter-form {
  display: flex;
  flex-direction: row;
  gap: var(--spacing-small);
  margin-top: 1rem;
}
.newsletter-form input[type="email"] {
  flex: 1;
  padding: 0.5rem 0.75rem;
  border: 1px solid #e5e7eb;
  border-radius: var(--border-radius);
  font-size: 1rem;
}
.newsletter-form button {
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  border: none;
  background-color: var(--color-primary);
  color: #fff;
  font-weight: var(--font-weight-bold);
  cursor: pointer;
}
.newsletter-form button:hover,
.newsletter-form button:focus {
  background-color: var(--color-secondary);
}

/* Forms */
form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
label {
  font-weight: var(--font-weight-bold);
}
input[type="text"],
input[type="email"],
input[type="number"],
textarea {
  padding: 0.75rem;
  border: 1px solid #e5e7eb;
  border-radius: var(--border-radius);
  font-size: 1rem;
  width: 100%;
}
input:focus,
textarea:focus {
  outline: 3px solid var(--color-accent);
  border-color: var(--color-primary);
}
textarea {
  min-height: 120px;
  resize: vertical;
}
form .btn {
  align-self: flex-start;
}

/* Accessibility helper for screen readers */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}