/* =============================================================
   components.css — Buttons, cards, booking form, slot grid, states
   ============================================================= */

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  border-radius: var(--radius-pill);
  padding: 0.75rem 2rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition),
              border-color var(--transition), transform var(--transition),
              box-shadow var(--transition);
  text-decoration: none;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}

.btn:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

/* Primary solid — terracotta */
.btn--primary {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
}

.btn--primary:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26,26,26,0.2);
}

/* Outlined */
.btn--outline {
  background-color: transparent;
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn--outline:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-1px);
}

/* Outlined light (for dark backgrounds) */
.btn--outline-light {
  background-color: transparent;
  border-color: var(--color-white);
  color: var(--color-white);
}

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

/* Ghost / text link */
.btn--ghost {
  background: none;
  border-color: transparent;
  color: var(--color-accent);
  padding-inline: 0.5rem;
}

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

/* Small variant */
.btn--sm {
  font-size: 0.8125rem;
  padding: 0.5rem 1.375rem;
}

/* Full width */
.btn--full {
  width: 100%;
}

/* Disabled */
.btn:disabled,
.btn[aria-disabled="true"] {
  background-color: var(--color-sand-dark);
  border-color: var(--color-sand-dark);
  color: var(--color-gray-light);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
  pointer-events: none;
}

/* ── Class Cards ── */
.class-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}

.class-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.class-card__image {
  aspect-ratio: 3/2;
  overflow: hidden;
}

.class-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.class-card:hover .class-card__image img {
  transform: scale(1.05);
}

.class-card__body {
  padding: 1.625rem 1.75rem 2rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.class-card__label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.class-card__title {
  font-family: var(--font-serif);
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--color-black);
  margin-bottom: 0.625rem;
}

.class-card__desc {
  font-size: 0.9rem;
  color: var(--color-gray);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 1.375rem;
}

/* ── Booking Section ── */
.booking-section {
  background-color: var(--color-bg);
  padding-top: 0;
  padding-bottom: clamp(4rem, 8vw, 7rem);
}

.booking-steps {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  max-width: 860px;
  margin-inline: auto;
  padding-top: 2rem;
}

.booking-step {
  display: flex;
  flex-direction: column;
  gap: 1.125rem;
}

.booking-step__label {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.booking-step__num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: var(--color-white);
  font-size: 0.875rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.booking-step__label h2 {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-black);
}

/* Date Strip */
.date-strip {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.date-strip__header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.date-strip__month {
  font-family: var(--font-sans);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-black);
  letter-spacing: -0.01em;
}

.date-strip__cal-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-black);
  display: flex;
  align-items: center;
  padding: 0.2rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition);
  margin-left: 0.125rem;
}

.date-strip__cal-btn:hover {
  color: var(--color-accent);
}

.date-strip__row {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.date-strip__arrow {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1.5px solid var(--color-sand-dark);
  background: var(--color-white);
  color: var(--color-black);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  -webkit-tap-highlight-color: transparent;
}

.date-strip__arrow:hover {
  border-color: var(--color-black);
}

.date-strip__track {
  flex: 1;
  display: flex;
  overflow-x: scroll;
  scroll-behavior: smooth;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.date-strip__track::-webkit-scrollbar {
  display: none;
}

.date-strip__cell {
  flex-shrink: 0;
  width: 68px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  padding: 0.625rem 0.25rem;
  border-radius: 12px;
  cursor: pointer;
  border: none;
  background: none;
  transition: background var(--transition);
  -webkit-tap-highlight-color: transparent;
}

.date-strip__cell:hover:not(.is-active) {
  background: var(--color-sand);
}

.date-strip__cell.is-active {
  background: var(--color-black);
}

.date-strip__day {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-gray);
  letter-spacing: 0.01em;
}

.date-strip__cell.is-active .date-strip__day {
  color: rgba(255, 255, 255, 0.65);
}

.date-strip__num {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-black);
  line-height: 1;
}

.date-strip__cell.is-active .date-strip__num {
  color: var(--color-white);
}

/* Slot Filters */
.slot-filters {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.slot-filter-btn {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.4rem 1.125rem;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--color-sand-dark);
  background: var(--color-white);
  color: var(--color-gray);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  -webkit-tap-highlight-color: transparent;
}

.slot-filter-btn:hover:not(.is-active) {
  border-color: var(--color-black);
  color: var(--color-black);
}

.slot-filter-btn.is-active {
  background: var(--color-black);
  border-color: var(--color-black);
  color: var(--color-white);
}

/* Slots Grid */
.slots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
}

/* Slot Card */
.slot-card {
  background: var(--color-white);
  border: 1.5px solid var(--color-sand);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.slot-card:not(.slot-card--full):hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-sand-dark);
}

.slot-card--full {
  opacity: 0.72;
}

/* Slot type row with info icon */
.slot-card__type-row {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  position: relative;
}

.slot-info-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-gray-light);
  padding: 0.1rem;
  border-radius: 50%;
  transition: color var(--transition);
  flex-shrink: 0;
  line-height: 1;
}

.slot-info-btn:hover,
.slot-info-btn[aria-expanded="true"] {
  color: var(--color-accent);
}

.slot-info-popover {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  z-index: 100;
  background: var(--color-white);
  border: 1px solid var(--color-sand-dark);
  border-radius: var(--radius-md);
  padding: 1rem 1.125rem;
  width: 280px;
  box-shadow: var(--shadow-lg);
}

.slot-info-popover p {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--color-gray);
}

.slot-card__time {
  font-family: var(--font-serif);
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--color-black);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.slot-card__instructor {
  font-size: 0.875rem;
  color: var(--color-gray);
}

.slot-card__instructor strong {
  color: var(--color-gray);
  font-weight: 500;
}

.slot-card__level {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-gray-light);
}

.slot-card__availability {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  font-weight: 500;
  margin-top: 0.5rem;
}

.slot-card__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.slot-card__dot--open {
  background-color: #5cb85c;
}

.slot-card__dot--full {
  background-color: var(--color-gray-light);
}

.slot-card__avail-text--open {
  color: #3d8b3d;
}

.slot-card__avail-text--full {
  color: var(--color-gray-light);
}

.slot-card__action {
  margin-top: 1rem;
}

/* Session Type Selector (Private classes) */
.session-type-group {
  display: flex;
  gap: 0.5rem;
}

.session-type-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.125rem;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.5rem 0.25rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-sand-dark);
  background: var(--color-white);
  color: var(--color-gray);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  -webkit-tap-highlight-color: transparent;
}

.session-type-btn span {
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  color: var(--color-gray-light);
}

.session-type-btn:hover:not(.is-active) {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.session-type-btn.is-active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-white);
}

.session-type-btn.is-active span {
  color: rgba(255, 255, 255, 0.75);
}

/* Inline Reservation Form */
.reserve-form-wrap {
  border-top: 1.5px solid var(--color-sand);
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  display: none;
}

.reserve-form-wrap.is-open {
  display: block;
}

.reserve-form {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-field label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-black);
  letter-spacing: 0.02em;
}

.form-field input,
.form-field select {
  background: var(--color-bg);
  border: 1.5px solid var(--color-sand-dark);
  border-radius: var(--radius-sm);
  padding: 0.625rem 0.875rem;
  font-size: 0.9375rem;
  color: var(--color-black);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}

.form-field select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23555' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.875rem center;
  padding-right: 2.25rem;
}

.form-field input::placeholder {
  color: var(--color-gray-light);
}

.form-field input:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(26,26,26,0.1);
}

/* Booking states */
.booking-state {
  padding: 2.5rem;
  text-align: center;
  grid-column: 1 / -1;
}

.booking-state p {
  font-size: 0.9375rem;
}

.booking-fallback {
  background: var(--color-sand);
  border-radius: var(--radius-md);
  padding: 2rem 2.5rem;
  border-left: 4px solid var(--color-accent);
}

.booking-fallback p {
  color: var(--color-black);
}

/* Loading spinner */
.loading-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 3rem 1rem;
  grid-column: 1 / -1;
}

.spinner {
  width: 22px;
  height: 22px;
  border: 2.5px solid var(--color-sand-dark);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

.loading-wrap p {
  font-size: 0.9rem;
  color: var(--color-gray);
}

/* Inline messages */
.inline-msg {
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  line-height: 1.55;
  margin-top: 0.5rem;
}

.inline-msg--success {
  background-color: #eaf7ea;
  color: #2d6a2d;
  border: 1px solid #b6deb6;
}

.inline-msg--error {
  background-color: #fdf0ed;
  color: #9b3a1f;
  border: 1px solid #f0c0ac;
}

/* Success confirmation */
.booking-confirm {
  background: #eaf7ea;
  border: 1px solid #b6deb6;
  border-radius: var(--radius-sm);
  padding: 1rem 1.125rem;
  font-size: 0.875rem;
  color: #2d6a2d;
  line-height: 1.6;
  margin-top: 0.5rem;
}

.booking-confirm__messenger {
  display: block;
  margin-top: 0.625rem;
  padding-top: 0.625rem;
  border-top: 1px solid #b6deb6;
  font-size: 0.8125rem;
  color: #3a7a3a;
}

.booking-confirm__messenger a {
  color: #0084FF;
  text-decoration: underline;
  font-weight: 500;
}

.booking-confirm__messenger a:hover {
  color: #006fd6;
}

/* ── Responsive ── */
@media (max-width: 767px) {
  .slots-grid {
    grid-template-columns: 1fr;
  }
}