/* =========================================================================
   SECTION: Shared components
   Buttons, forms, cards, badges, toasts, modal, navbar, footer, language
   switcher. Used across the public site and both dashboards.
   ========================================================================= */

/* --- Layout primitives (spec 1.3) ----------------------------------- */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

@media (min-width: 40rem) {
  .container {
    padding-inline: 1.5rem;
  }
}

@media (min-width: 64rem) {
  .container {
    padding-inline: var(--container-pad-lg);
  }
}

.section {
  padding-block: var(--section-y);
}

@media (min-width: 48rem) {
  .section {
    padding-block: var(--section-y-lg);
  }
}

.section--alt {
  background-color: var(--bg-alt);
}

.section-head {
  max-width: 44rem;
  margin-bottom: 3rem;
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

/* --- Buttons (spec 1.4) ------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-weight: var(--fw-medium);
  font-size: 0.9375rem;
  line-height: 1.25rem;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition), border-color var(--transition),
    color var(--transition), transform var(--transition-fast);
  white-space: nowrap;
}

.btn:active {
  transform: translateY(1px);
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.btn[disabled],
.btn.is-loading {
  opacity: 0.65;
  pointer-events: none;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  color: var(--text-on-primary);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-secondary);
}

.btn-secondary:hover {
  background-color: var(--bg-alt);
  color: var(--color-primary-hover);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-primary);
  border-color: transparent;
  padding-inline: 0.75rem;
}

.btn-ghost:hover {
  background-color: var(--bg-alt);
}

.btn-danger {
  background-color: var(--color-danger);
  color: #fff;
}

.btn-danger:hover {
  background-color: var(--color-danger-ink);
  color: #fff;
}

.btn-on-dark {
  background-color: #fff;
  color: var(--color-primary);
}

.btn-on-dark:hover {
  background-color: var(--bg-alt);
  color: var(--color-primary-hover);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 0.9rem 1.9rem;
  font-size: 1rem;
}

/* Spinner shown while .is-loading */
.btn__spinner {
  width: 1rem;
  height: 1rem;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: none;
}

.btn.is-loading .btn__spinner {
  display: inline-block;
}

.btn.is-loading .btn__label {
  opacity: 0.8;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* --- Forms (spec 1.4) ------------------------------------------------- */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: var(--fw-medium);
  color: var(--text-primary);
  margin-bottom: 0.375rem;
}

.form-label .req {
  color: var(--color-danger);
}

.form-hint {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.375rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background-color: #fff;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: #94a3b8;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring-input);
}

.form-textarea {
  min-height: 8rem;
  resize: vertical;
}

.input-error {
  border-color: var(--color-danger) !important;
}

.field-error {
  display: block;
  font-size: 0.8125rem;
  color: var(--color-danger-ink);
  margin-top: 0.375rem;
}

.field-error:empty {
  display: none;
}

/* Radio / checkbox cards */
.choice {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 1rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--transition), background-color var(--transition);
}

.choice:hover {
  border-color: var(--color-secondary);
  background-color: var(--bg-alt);
}

.choice input {
  margin-top: 0.15rem;
  accent-color: var(--color-primary);
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.choice:has(input:checked) {
  border-color: var(--color-primary);
  background-color: #fff;
  box-shadow: inset 0 0 0 1px var(--color-primary);
}

.choice:has(input:focus-visible) {
  box-shadow: var(--focus-ring);
}

.choice__title {
  font-weight: var(--fw-medium);
  color: var(--text-primary);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0 1rem;
}

@media (min-width: 30rem) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
  .form-row--tight {
    grid-template-columns: 1fr auto;
    align-items: end;
    gap: 0.75rem;
  }
}

.consent {
  display: flex;
  gap: 0.625rem;
  align-items: flex-start;
  font-size: 0.9375rem;
}

.consent input {
  margin-top: 0.2rem;
  accent-color: var(--color-primary);
  width: 1.05rem;
  height: 1.05rem;
  flex-shrink: 0;
}

/* --- Card ------------------------------------------------------------ */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.card--pad-lg {
  padding: 2rem;
}

.card--shadow {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

/* --- Badge --------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.01em;
  background-color: var(--bg-inset);
  color: var(--text-secondary);
}

.badge--success {
  background-color: rgba(0, 230, 118, 0.14);
  color: var(--color-success-ink);
}

.badge--danger {
  background-color: rgba(255, 59, 48, 0.12);
  color: var(--color-danger-ink);
}

.badge--info {
  background-color: rgba(69, 76, 84, 0.1);
  color: var(--color-primary);
}

.badge--warning {
  background-color: rgba(234, 179, 8, 0.16);
  color: #854d0e;
}

/* --- Language switcher (spec 1.5) --------------------------------- */
.lang-switch {
  display: inline-flex;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-pill);
  overflow: hidden;
  background: #fff;
}

.lang-switch__btn {
  border: none;
  background: transparent;
  padding: 0.35rem 0.7rem;
  font-size: 0.8125rem;
  font-weight: var(--fw-semibold);
  color: var(--text-muted);
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition);
}

.lang-switch__btn[aria-pressed="true"] {
  background-color: var(--color-primary);
  color: #fff;
}

.lang-switch__btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.lang-switch--on-dark {
  border-color: var(--border-on-dark);
  background: transparent;
}

.lang-switch--on-dark .lang-switch__btn {
  color: rgba(255, 255, 255, 0.7);
}

.lang-switch--on-dark .lang-switch__btn[aria-pressed="true"] {
  background-color: #fff;
  color: var(--color-primary);
}

/* --- Toasts (spec 7) --------------------------------------------- */
.toast-region {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  max-width: min(24rem, calc(100vw - 2rem));
}

.toast {
  background: var(--text-primary);
  color: #fff;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  font-size: 0.9rem;
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  animation: toast-in 0.2s ease;
}

.toast--success {
  background: #05612f;
}

.toast--error {
  background: var(--color-danger-ink);
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(0.5rem);
  }
}

/* --- Modal / dialog --------------------------------------------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal.is-open {
  display: flex;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
}

.modal__panel {
  position: relative;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2xl);
  width: min(40rem, 100%);
  max-height: calc(100vh - 2rem);
  overflow-y: auto;
  padding: 1.75rem;
  animation: toast-in 0.18s ease;
}

.modal__close {
  position: absolute;
  top: 0.9rem;
  right: 0.9rem;
  border: none;
  background: var(--bg-inset);
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1;
}

.modal__close:hover {
  background: var(--border);
}

/* --- Public navbar (spec 3.0) --------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  transition: background-color var(--transition), box-shadow var(--transition),
    backdrop-filter var(--transition);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.06), var(--shadow-sm);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 4.5rem;
}

.navbar__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-heading);
  font-weight: var(--fw-bold);
  font-size: 1.25rem;
  color: var(--text-primary);
  text-decoration: none;
}

.navbar__brand img {
  height: 2rem;
  width: auto;
}

.navbar__links {
  display: none;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.navbar__link {
  position: relative;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: var(--fw-medium);
  padding-block: 0.4rem;
}

.navbar__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.navbar__link:hover,
.navbar__link[aria-current="page"] {
  color: var(--text-primary);
}

.navbar__link:hover::after,
.navbar__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.navbar__cta {
  display: none;
}

.navbar__toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  background: #fff;
  cursor: pointer;
  padding: 0 0.55rem;
}

.navbar__toggle span {
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.navbar__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.navbar__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.navbar__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-nav {
  display: block;
  border-top: 1px solid var(--border);
  background: #fff;
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--transition);
}

.mobile-nav.is-open {
  max-height: 30rem;
}

.mobile-nav__inner {
  padding: 1rem 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mobile-nav__link {
  padding: 0.75rem 0.25rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: var(--fw-medium);
  border-bottom: 1px solid var(--border);
}

.mobile-nav__link:hover {
  color: var(--text-primary);
}

.mobile-nav .btn {
  margin-top: 1rem;
}

@media (min-width: 64rem) {
  .navbar__links,
  .navbar__cta {
    display: flex;
  }
  .navbar__toggle,
  .mobile-nav {
    display: none;
  }
}

/* --- Public footer (spec 3.6) ------------------------------- */
.site-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding-block: 4rem 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.footer-brand__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: var(--fw-bold);
  font-size: 1.125rem;
  color: var(--text-primary);
  text-decoration: none;
}

.footer-brand__logo img {
  height: 1.75rem;
}

.footer-brand p {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  max-width: 20rem;
}

.footer-brand__contact {
  margin-top: 1rem;
  font-size: 0.875rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.footer-col h3 {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.9rem;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-col a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-col a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
  align-items: center;
}

@media (min-width: 40rem) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
  }
}

/* --- Star rating ------------------------------------------------ */
.stars {
  display: inline-flex;
  gap: 0.1rem;
  color: #f5a623;
}

.stars svg {
  width: 1.05rem;
  height: 1.05rem;
}

/* --- Alert banner --------------------------------------------- */
.alert {
  border-radius: var(--radius-md);
  padding: 0.9rem 1.1rem;
  font-size: 0.9rem;
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
}

.alert--danger {
  background: rgba(255, 59, 48, 0.08);
  color: var(--color-danger-ink);
  border: 1px solid rgba(255, 59, 48, 0.25);
}

.alert--success {
  background: rgba(0, 230, 118, 0.1);
  color: var(--color-success-ink);
  border: 1px solid rgba(0, 230, 118, 0.3);
}

.alert--info {
  background: var(--bg-alt);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

/* --- Utilities ------------------------------------------------ */
.hidden {
  display: none !important;
}

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

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

.u-mt-0 { margin-top: 0; }
.u-mt-2 { margin-top: 0.5rem; }
.u-mt-4 { margin-top: 1rem; }
.u-mt-6 { margin-top: 1.5rem; }
.u-mt-8 { margin-top: 2rem; }
.u-mb-4 { margin-bottom: 1rem; }

.fade-out {
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.code-block {
  background: var(--text-primary);
  color: #e2e8f0;
  border-radius: var(--radius-md);
  padding: 0.9rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
  margin: 0.75rem 0;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--bg-inset);
  padding: 0.1em 0.35em;
  border-radius: var(--radius-sm);
}