/* =============================================================
   NextUp App — Shared Components
   Buttons, forms, cards, modals, toasts, tab bar, header.
   ============================================================= */

/* ---- Buttons ---- */
.btn-primary, .btn-secondary, .btn-ghost, .btn-danger {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.04em;
  padding: 14px 24px;
  border-radius: var(--radius);
  transition: all var(--duration) var(--ease-out);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  text-align: center;
  width: 100%;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
}

.btn-primary {
  background: var(--dark);
  color: var(--surface);
}
.btn-primary:active {
  background: #000;
  transform: scale(0.98);
}
.btn-primary:disabled {
  opacity: 0.4;
  pointer-events: none;
}

.btn-secondary {
  background: var(--surface);
  color: var(--dark);
  border: 1px solid var(--dark);
}
.btn-secondary:active {
  background: var(--bg);
}

.btn-ghost {
  background: transparent;
  color: var(--dark);
}
.btn-ghost:active {
  background: var(--bg);
}

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

.btn-sm {
  min-height: 36px;
  padding: 8px 16px;
  font-size: 11px;
}

.btn-icon {
  width: 40px;
  min-height: 40px;
  padding: 0;
  border-radius: 50%;
}

.btn-row {
  display: flex;
  gap: 12px;
}
.btn-row .btn-primary, .btn-row .btn-secondary, .btn-row .btn-ghost {
  flex: 1;
}

/* ---- Forms ---- */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="tel"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  font-family: var(--font-body);
  font-size: 16px; /* prevents iOS zoom on focus */
  color: var(--dark);
  transition: border-color var(--duration) var(--ease-out);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--dark);
}

.form-group textarea {
  min-height: 100px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-hint, .hint {
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
}

/* ---- Service search ---- */
.service-search-wrap {
  position: relative;
}
.service-search-input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: 16px;
}
.service-search-input:focus {
  outline: none;
  border-color: var(--dark);
}
.service-search-results {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  max-height: 280px;
  overflow-y: auto;
  z-index: 100;
  display: none;
}
.service-search-results.open {
  display: block;
}
.search-result-item {
  display: block;
  width: 100%;
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.search-result-item:active {
  background: var(--bg);
}
.search-result-item:last-child { border-bottom: none; }
.search-result-service {
  display: block;
  font-size: 15px;
  color: var(--dark);
}
.search-result-service strong { color: var(--dark); font-weight: 700; }
.search-result-path {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}
.search-no-results {
  padding: 16px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

/* ---- Services checkboxes ---- */
.services-checkboxes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  max-height: 240px;
  overflow-y: auto;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.service-checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  cursor: pointer;
  font-size: 14px;
  border-radius: var(--radius);
}
.service-checkbox:active {
  background: var(--bg);
}
.service-checkbox input {
  width: 18px;
  height: 18px;
  margin: 0;
}

/* ---- App Shell: Header + Bottom Tab Bar ---- */
.app-shell {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding-bottom: calc(var(--tab-bar-height) + var(--safe-bottom));
}

.mobile-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  padding-top: var(--safe-top);
  z-index: 50;
}
.mobile-header__logo {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  color: var(--dark);
  letter-spacing: -0.01em;
}
.mobile-header__back {
  font-size: 18px;
  color: var(--dark);
  padding: 8px 12px 8px 0;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
}
.mobile-header__right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(var(--tab-bar-height) + var(--safe-bottom));
  background: var(--surface);
  border-top: 1px solid var(--border);
  display: flex;
  z-index: 50;
  padding-bottom: var(--safe-bottom);
}
.tab-bar__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--faint);
  padding: 6px 0;
  transition: color var(--duration) var(--ease-out);
}
.tab-bar__item--active {
  color: var(--dark);
}
.tab-bar__icon {
  font-size: 22px;
  line-height: 1;
}

.main-content {
  flex: 1;
  padding: 20px 16px 20px;
  max-width: 600px;
  width: 100%;
  margin: 0 auto;
}

/* ---- Cards ---- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
}

.empty-state {
  padding: 48px 24px;
  text-align: center;
  color: var(--muted);
}
.empty-state__icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.5;
}
.empty-state__title {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--dark);
  margin-bottom: 8px;
}
.empty-state__subtitle {
  font-size: 14px;
  line-height: 1.5;
}

/* ---- Auth screen (shared login/register/role-select) ---- */
.auth-wrapper {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: 40px 24px;
  padding-top: calc(40px + var(--safe-top));
  padding-bottom: calc(40px + var(--safe-bottom));
}
.auth-logo {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 600;
  color: var(--dark);
  letter-spacing: -0.01em;
  margin-bottom: 40px;
  text-align: center;
}
.auth-heading {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 500;
  color: var(--dark);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}
.auth-subheading {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 32px;
}
.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  margin-bottom: 24px;
}
.auth-footer {
  text-align: center;
  font-size: 14px;
  color: var(--muted);
  margin-top: 20px;
}
.auth-footer a, .auth-footer .link {
  color: var(--dark);
  font-weight: 600;
  border-bottom: 1px solid var(--dark);
  padding-bottom: 1px;
  cursor: pointer;
}

/* ---- Messages ---- */
.msg-error {
  background: #fdf1f1;
  border-left: 3px solid var(--danger);
  color: var(--danger);
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 14px;
  margin-bottom: 16px;
}
.msg-success {
  background: #f1fdf5;
  border-left: 3px solid var(--success);
  color: var(--success);
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 14px;
  margin-bottom: 16px;
}

/* ---- Toast ---- */
.toast {
  position: fixed;
  bottom: calc(var(--tab-bar-height) + var(--safe-bottom) + 16px);
  left: 50%;
  transform: translate(-50%, 100%);
  background: var(--dark);
  color: var(--surface);
  padding: 12px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  z-index: 1000;
  opacity: 0;
  transition: all 300ms var(--ease-out);
  max-width: 90%;
  text-align: center;
  box-shadow: var(--shadow-md);
}
.toast--visible {
  transform: translate(-50%, 0);
  opacity: 1;
}
.toast--error { background: var(--danger); }
.toast--success { background: var(--success); }

/* ---- Spinner ---- */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--dark);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
.loading-state {
  padding: 48px 20px;
  text-align: center;
}

/* ---- Modal ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(17, 17, 17, 0.5);
  z-index: 200;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}
.modal {
  background: var(--surface);
  width: 100%;
  max-width: 600px;
  border-radius: 16px 16px 0 0;
  padding: 24px 20px;
  padding-bottom: calc(24px + var(--safe-bottom));
  max-height: 90vh;
  overflow-y: auto;
}
.modal-header {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--dark);
  margin-bottom: 16px;
}
.modal-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

/* ---- Error screen ---- */
.error-screen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  text-align: center;
}
.error-screen h2 {
  font-family: var(--font-display);
  font-size: 24px;
  color: var(--dark);
  margin-bottom: 12px;
}
.error-screen p {
  color: var(--muted);
  margin-bottom: 24px;
}
.error-screen .btn-primary {
  max-width: 200px;
}

/* ---- Page header ---- */
.page-header {
  margin-bottom: 24px;
}
.page-header__title {
  font-family: var(--font-display);
  font-size: 26px;
  color: var(--dark);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.page-header__subtitle {
  color: var(--muted);
  font-size: 14px;
}

/* ---- Badge ---- */
.badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 10px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.badge--open      { background: #fff7e6; color: var(--warning); }
.badge--booked    { background: #e6f4ff; color: #1a4b8b; }
.badge--completed { background: #e8f5ee; color: var(--success); }
.badge--cancelled { background: var(--bg);  color: var(--muted); }

/* ---- Divider ---- */
.divider {
  height: 1px;
  background: var(--border);
  margin: 24px 0;
}
.divider--text {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0;
  color: var(--faint);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.divider--text::before,
.divider--text::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}