/* Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: 1.6;
  color: var(--charcoal);
  background-color: var(--off-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

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

a {
  color: var(--navy);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--scarlet);
}

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  line-height: 1.2;
  color: var(--charcoal);
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

p + p {
  margin-top: var(--space-md);
}

/* Skip to content */
.skip-to-content {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  z-index: var(--z-modal);
  padding: var(--space-sm) var(--space-md);
  background: var(--scarlet);
  color: var(--white);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-sm);
  transition: top var(--transition-fast);
}

.skip-to-content:focus {
  top: var(--space-md);
  color: var(--white);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* Section spacing */
.section {
  padding-block: var(--space-3xl);
}

@media (min-width: 768px) {
  .section {
    padding-block: var(--space-4xl);
  }
}

/* Visually hidden */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Overline / tagline style */
.overline {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--scarlet);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.875rem 2rem;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 48px;
  min-width: 44px;
  text-decoration: none;
  cursor: pointer;
}

.btn:focus-visible {
  outline: 2px solid var(--scarlet);
  outline-offset: 2px;
}

.btn--primary {
  background-color: var(--scarlet);
  color: var(--white);
  border: 2px solid var(--scarlet);
}

.btn--primary:hover {
  background-color: var(--scarlet-dark);
  border-color: var(--scarlet-dark);
  color: var(--white);
}

.btn--secondary {
  background-color: var(--navy);
  color: var(--white);
  border: 2px solid var(--navy);
}

.btn--secondary:hover {
  background-color: var(--navy-dark);
  border-color: var(--navy-dark);
  color: var(--white);
}

.btn--outline {
  background-color: transparent;
  color: var(--navy);
  border: 2px solid var(--navy);
}

.btn--outline:hover {
  background-color: var(--navy);
  color: var(--white);
}

.btn--outline-white {
  background-color: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}

.btn--outline-white:hover {
  background-color: var(--white);
  color: var(--navy);
}

.btn--sm {
  padding: 0.5rem 1.25rem;
  font-size: var(--text-xs);
  min-height: 36px;
}

.btn--lg {
  padding: 1rem 2.5rem;
  font-size: var(--text-base);
}

/* Form elements */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--charcoal);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: var(--text-base);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: var(--white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 44px;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(27, 58, 107, 0.15);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* Focus ring for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--scarlet);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

/* Overlay backdrop */
.overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: var(--z-overlay);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.overlay.is-active {
  opacity: 1;
  visibility: visible;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.125rem 0.5rem;
  font-size: 0.6875rem;
  font-weight: var(--weight-bold);
  border-radius: var(--radius-full);
  line-height: 1.4;
}

.badge--scarlet {
  background-color: var(--scarlet);
  color: var(--white);
}

.badge--navy {
  background-color: var(--navy);
  color: var(--white);
}

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

.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }
.grid--4 { grid-template-columns: repeat(2, 1fr); gap: var(--space-md); }

@media (min-width: 480px) {
  .grid--4 { gap: var(--space-lg); }
}

@media (min-width: 768px) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}