/* ==========================================================================
   Infobox — Components
   Navigation, buttons, cards, tags, form elements, focus styles
   ========================================================================== */

/* ==========================================================================
   Skip to content
   ========================================================================== */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: 1000;
  padding: var(--space-2) var(--space-4);
  background: var(--color-action);
  color: var(--color-text-inverse);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

/* ==========================================================================
   Focus styles
   ========================================================================== */

:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 2px;
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-white);
  transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.site-logo img {
  height: 36px;
  width: auto;
}

/* Desktop nav */
.site-nav {
  display: none;
  align-items: center;
  gap: var(--space-8);
}

@media (min-width: 1024px) {
  .site-nav {
    display: flex;
  }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  position: relative;
  padding: var(--space-2) 0;
  transition: color var(--transition-base);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-action);
  transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-action);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  padding: var(--space-2) 0;
  transition: color var(--transition-base);
}

.nav-dropdown-toggle:hover {
  color: var(--color-action);
}

.nav-dropdown-toggle svg {
  width: 12px;
  height: 12px;
  transition: transform var(--transition-base);
}

.nav-dropdown:hover .nav-dropdown-toggle svg,
.nav-dropdown:focus-within .nav-dropdown-toggle svg {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: -var(--space-4);
  min-width: 220px;
  padding: var(--space-2) 0;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: all var(--transition-base);
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-menu a {
  display: block;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  transition: background-color var(--transition-fast);
}

.nav-dropdown-menu a:hover {
  background-color: var(--color-off-white);
  color: var(--color-action);
}

/* Mobile hamburger */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: 4px;
}

@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-charcoal);
  border-radius: 1px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile overlay */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 99;
  background-color: var(--color-white);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-slow);
}

.mobile-nav.open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav a {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  transition: color var(--transition-base);
}

.mobile-nav a:hover {
  color: var(--color-action);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-action);
  color: var(--color-text-inverse);
}

.btn-primary:hover {
  background-color: var(--color-action-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: rgba(27, 107, 176, 0.08);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text-primary);
  padding: var(--space-2) 0;
  border-radius: 0;
  position: relative;
}

.btn-ghost::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-action);
  transition: width var(--transition-base);
}

.btn-ghost:hover::after {
  width: 100%;
}

.btn-ghost:hover {
  color: var(--color-action);
}

.btn-destructive {
  background-color: var(--color-alert);
  color: var(--color-text-inverse);
}

.btn-destructive:hover {
  background-color: #b31e24;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Button on dark backgrounds */
.btn-primary-inverse {
  background-color: var(--color-action);
  color: var(--color-text-inverse);
}

.btn-primary-inverse:hover {
  background-color: var(--color-action-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary-inverse {
  background-color: transparent;
  color: var(--color-text-inverse);
  border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-secondary-inverse:hover {
  border-color: var(--color-text-inverse);
  background-color: rgba(255, 255, 255, 0.08);
}

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
  background: var(--color-bg-card);
  border: var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

@media (min-width: 768px) {
  .card {
    padding: var(--space-8);
  }
}

/* Left border accent variant */
.card-accent {
  border-left: 3px solid var(--color-blue);
}

.card-accent-green {
  border-left: 3px solid var(--color-green);
}

.card-accent-red {
  border-left: 3px solid var(--color-red);
}

/* Card icon */
.card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  font-size: var(--text-xl);
}

.card-icon-blue   { background: rgba(27, 107, 176, 0.12); color: var(--color-blue); }
.card-icon-green  { background: rgba(79, 154, 50, 0.12); color: var(--color-green); }
.card-icon-red    { background: rgba(204, 34, 41, 0.12); color: var(--color-red); }
.card-icon-silver { background: rgba(140, 140, 140, 0.12); color: var(--color-silver); }

/* Card content */
.card-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.card-description {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 300;
  color: var(--color-text-secondary);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  margin-top: var(--space-4);
  transition: color var(--transition-base);
}

.card-link:hover {
  color: var(--color-action);
}

.card-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-base);
}

.card-link:hover svg {
  transform: translateX(4px);
}

/* ==========================================================================
   Tags / Badges
   ========================================================================== */

.tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  line-height: 1;
}

.tag-blue {
  background-color: rgba(27, 107, 176, 0.12);
  color: var(--color-blue);
}

.tag-green {
  background-color: rgba(79, 154, 50, 0.12);
  color: var(--color-green);
}

.tag-silver {
  background-color: rgba(140, 140, 140, 0.15);
  color: var(--color-charcoal);
}

.tag-red {
  background-color: rgba(204, 34, 41, 0.12);
  color: var(--color-red);
}

/* ==========================================================================
   Section heading pattern
   ========================================================================== */

.section-header {
  margin-bottom: var(--space-10);
}

.section-header .tag {
  margin-bottom: var(--space-4);
}

.section-header h2 {
  margin-bottom: var(--space-4);
}

.section-header .text-lead {
  color: var(--color-text-secondary);
}

/* Section divider — short accent line */
.divider-accent {
  width: 40px;
  height: 2px;
  background-color: var(--color-blue);
  border: none;
  margin: var(--space-6) 0;
}

/* ==========================================================================
   Form elements
   ========================================================================== */

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.form-input,
.form-select,
.form-textarea {
  display: block;
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  color: var(--color-text-primary);
  background-color: var(--color-white);
  border: var(--border-strong);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-action);
  box-shadow: 0 0 0 3px rgba(27, 107, 176, 0.12);
  outline: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: #767676;
}

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

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%238C8C8C'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-10);
}

.form-error {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-alert);
  margin-top: var(--space-1);
}

/* Honeypot — visually hidden */
.form-honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
  overflow: hidden;
}

/* ==========================================================================
   Logo strip
   ========================================================================== */

.logo-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-8);
  opacity: 0.5;
}

.logo-strip img {
  height: 28px;
  width: auto;
  filter: grayscale(100%);
  transition: filter var(--transition-base), opacity var(--transition-base);
}

.logo-strip img:hover {
  filter: grayscale(0%);
  opacity: 1;
}

/* ==========================================================================
   Team member card
   ========================================================================== */

.team-card {
  text-align: center;
}

.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  background-color: var(--color-off-white);
  margin: 0 auto var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-blue);
  overflow: hidden;
}

.team-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
}

.team-role {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

.team-bio {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 300;
  color: var(--color-text-secondary);
  margin-top: var(--space-3);
  max-width: 32ch;
  margin-left: auto;
  margin-right: auto;
}