/*
  Reusable component primitives shared across every section.
  If a rule only ever applies to one section, it belongs in
  sections.css instead — keep this file truly reusable.
*/

/* ---------- Buttons ---------- */
.btn {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: var(--space-3) var(--space-8);
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: transform var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  box-shadow: var(--shadow-glow-primary);
}

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

.btn-outline {
  background-color: transparent;
  color: var(--color-ink);
  border: 1.5px solid var(--color-border-strong);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-emergency {
  background-color: var(--color-emergency);
  color: var(--color-on-emergency);
  box-shadow: var(--shadow-glow-emergency);
}

.btn-emergency:hover {
  background-color: var(--color-emergency-dark);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-ink);
}

.btn-ghost:hover {
  background-color: var(--color-mint-tint);
  color: var(--color-primary);
}

.btn-sm {
  min-height: 40px;
  padding: var(--space-2) var(--space-6);
  font-size: var(--text-xs);
}

.btn:disabled {
  opacity: 0.5;
  pointer-events: none;
  transform: none;
}

/* Ripple element injected by js/ripple.js */
.btn .ripple {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  background: rgba(255, 255, 255, 0.45);
  animation: ripple var(--duration-slow) var(--ease-out);
  pointer-events: none;
}

.btn-outline .ripple,
.btn-ghost .ripple {
  background: rgba(14, 110, 93, 0.18);
}

@keyframes ripple {
  to {
    transform: scale(2.5);
    opacity: 0;
  }
}

/* ---------- Card ---------- */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out);
}

.card-hover:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

/* ---------- Glass surface ---------- */
.glass {
  background-color: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
}

/* ---------- Badge ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background-color: var(--color-mint-tint);
  color: var(--color-primary);
}

/* ---------- Form controls ---------- */
.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.field label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-ink);
}

.field .required {
  color: var(--color-emergency);
}

.field-control {
  width: 100%;
  min-height: 48px;
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-surface);
  border: 1.5px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  color: var(--color-ink);
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

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

.field-control:hover {
  border-color: var(--color-border-strong);
}

.field-control:focus-visible {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-mint-tint);
}

.field-control[aria-invalid='true'] {
  border-color: var(--color-error);
}

.field-hint {
  font-size: var(--text-xs);
  color: var(--color-ink-soft);
}

.field-error {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-error);
  display: none;
  align-items: center;
  gap: var(--space-1);
}

.field-error.is-visible {
  display: flex;
}

/* Honeypot — visually hidden from sighted/keyboard users, present for bots */
.field-trap {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ---------- Accordion (FAQ) ---------- */
.accordion-item {
  border-bottom: 1px solid var(--color-border);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-6) 0;
  text-align: left;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-ink);
}

.accordion-trigger .icon {
  flex-shrink: 0;
  transition: transform var(--duration-base) var(--ease-out);
}

.accordion-trigger[aria-expanded='true'] .icon {
  transform: rotate(45deg);
}

.accordion-panel {
  overflow: hidden;
  height: 0;
  transition: height var(--duration-base) var(--ease-out);
}

.accordion-panel-inner {
  padding-bottom: var(--space-6);
}

/* ---------- Tabs (Treatments) ---------- */
.tabs-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-10);
}

.tabs-trigger {
  padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-ink-muted);
  border: 1.5px solid var(--color-border);
  transition: all var(--duration-fast) var(--ease-out);
}

.tabs-trigger[aria-selected='true'] {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-on-primary);
}

.tabs-panel[hidden] {
  display: none;
}

/* ---------- Modal / Lightbox ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: var(--scrim);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  z-index: var(--z-modal);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-out);
}

.modal-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.modal-close {
  position: absolute;
  top: var(--space-5);
  right: var(--space-5);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(255, 255, 255, 0.12);
  color: #fff;
}

/* ---------- Toast (form feedback) ---------- */
.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
}

.toast-success {
  background-color: rgba(30, 142, 90, 0.1);
  color: var(--color-success);
  border: 1px solid rgba(30, 142, 90, 0.25);
}

.toast-error {
  background-color: rgba(211, 59, 44, 0.1);
  color: var(--color-error);
  border: 1px solid rgba(211, 59, 44, 0.25);
}

/* ---------- Icon button (theme toggle, nav controls, FAB) ---------- */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  color: var(--color-ink);
  transition: background-color var(--duration-fast) var(--ease-out);
}

.icon-btn:hover {
  background-color: var(--color-mint-tint);
  color: var(--color-primary);
}