/* ==========================================================================
   COMPONENTS.CSS — Tombol, Kartu, Lencana, Filter, Akordeon, & Elemen Global
   ========================================================================== */

/* --- Header Section & Garis Aksen Judul --- */
.section-header {
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: var(--space-8);
  text-align: center;
}

.section-header--left {
  max-width: none;
  margin-inline: 0;
  text-align: left;
}

.section-accent-line {
  display: inline-block;
  width: 44px;
  height: 5px;
  margin-bottom: var(--space-3);
  border-radius: var(--radius-pill);
  background-color: var(--brand-red);
}

.section-subtitle {
  margin-top: var(--space-2);
  font-size: var(--fs-body-lg);
  color: var(--text-secondary);
}

@media (min-width: 1024px) {
  .section-header {
    margin-bottom: var(--space-10);
  }
}

/* --- Tombol (Tinggi 44-48 px, Radius 8 px) --- */
.btn {
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 46px;
  padding: 0.6875rem 1.375rem;
  border-radius: var(--radius-btn);
  border: 1.5px solid transparent;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  font-weight: 600;
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  user-select: none;
  transition:
    background-color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.btn:active {
  transform: scale(0.97);
}

.btn--primary {
  background-color: var(--brand-red);
  color: var(--white);
  box-shadow: var(--shadow-xs);
}

.btn--primary:hover {
  background-color: var(--brand-red-hover);
  box-shadow: var(--shadow-red);
  transform: translateY(-2px);
}

.btn--primary:active {
  background-color: var(--brand-red-active);
  transform: scale(0.97);
}

.btn--secondary {
  background-color: var(--white);
  color: var(--brand-black);
  border-color: var(--border-strong);
}

.btn--secondary:hover {
  background-color: var(--slate-soft);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.btn--whatsapp {
  background-color: var(--whatsapp);
  color: var(--white);
  box-shadow: var(--shadow-xs);
}

.btn--whatsapp:hover {
  background-color: var(--whatsapp-hover);
  box-shadow: var(--shadow-wa);
  transform: translateY(-2px);
}

.btn--whatsapp:active {
  transform: scale(0.97);
}

.btn--white {
  background-color: var(--white);
  color: var(--brand-black);
  box-shadow: var(--shadow-sm);
}

.btn--white:hover {
  background-color: var(--slate-soft);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.btn--sm {
  min-height: 44px;
  padding: 0.5rem 0.9375rem;
  font-size: var(--fs-caption);
}

.btn--full {
  width: 100%;
}

.btn:disabled,
.btn.is-disabled {
  opacity: 0.5;
  pointer-events: none;
  box-shadow: none;
}

.btn__arrow {
  transition: transform var(--duration-fast) var(--ease-out);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* Elemen ripple klik tombol (dibuat via JS) */
.btn-ripple {
  position: absolute;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.36);
  pointer-events: none;
  transform: scale(0);
  animation: btn-ripple-anim 0.55s var(--ease-out) forwards;
}

@keyframes btn-ripple-anim {
  to {
    transform: scale(3.2);
    opacity: 0;
  }
}

/* --- Lencana / Pill (Badges) --- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.875rem;
  border-radius: var(--radius-pill);
  font-size: var(--fs-caption);
  font-weight: 600;
  line-height: 1.3;
}

.badge--soft-red {
  background-color: var(--brand-red-tint);
  color: var(--brand-red);
}

.badge--jenjang {
  padding: 0.25rem 0.75rem;
  background-color: var(--brand-red-tint);
  color: var(--brand-black);
  font-weight: 600;
}

.badge--popular {
  position: relative;
  overflow: hidden;
  padding: 0.3125rem 0.75rem;
  background-color: var(--brand-red);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.badge--status {
  padding: 0.1875rem 0.625rem;
  background-color: var(--slate-soft);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
}

/* --- Indikator Status Buka (WITA) --- */
.open-status {
  display: inline-flex;
  align-items: center;
  gap: 0.4375rem;
  padding: 0.3125rem 0.75rem;
  border-radius: var(--radius-pill);
  background-color: var(--white);
  border: 1px solid var(--border-light);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
}

.open-status__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--status-open);
  flex-shrink: 0;
}

.open-status.is-closed .open-status__dot {
  background-color: var(--status-closed);
}

.open-status.is-closed {
  color: var(--status-closed);
  background-color: var(--brand-red-soft);
  border-color: var(--brand-red-border);
}

/* --- Kartu & Lingkaran Ikon --- */
.card {
  position: relative;
  background-color: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  transition:
    transform var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
}

/* Kartu dengan garis atas merah 4 px (bagian Keunggulan) */
.card--top-accent {
  overflow: hidden;
  padding-top: calc(var(--space-6) + 4px);
}

.card--top-accent::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background-color: var(--brand-red);
  transform-origin: left center;
}

.icon-circle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--cream);
  border: 1px solid rgba(245, 158, 11, 0.22);
  color: var(--brand-red);
  flex-shrink: 0;
}

/* --- Baris Pil Filter Jenjang (Section Program) --- */
.filter-scroll {
  display: flex;
  justify-content: flex-start;
  overflow-x: auto;
  padding-bottom: var(--space-1);
  margin-bottom: var(--space-8);
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.filter-scroll::-webkit-scrollbar {
  display: none;
}

.filter-bar {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-inline: auto;
}

.filter-pill {
  position: relative;
  z-index: 1;
  min-height: 44px;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-medium);
  background-color: var(--white);
  color: var(--text-primary);
  font-size: var(--fs-caption);
  font-weight: 600;
  white-space: nowrap;
  transition:
    color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out);
}

.filter-pill:hover {
  border-color: var(--brand-red);
  color: var(--brand-red);
}

.filter-pill.is-active {
  background-color: var(--brand-red);
  border-color: var(--brand-red);
  color: var(--white);
}

/* Saat JS mengaktifkan indikator geser, latar tombol diambil alih oleh .filter-indicator */
.filter-bar.has-indicator .filter-pill.is-active {
  background-color: transparent;
  border-color: transparent;
  color: var(--white);
}

.filter-indicator {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  border-radius: var(--radius-pill);
  background-color: var(--brand-red);
  box-shadow: 0 4px 12px -2px rgba(185, 28, 28, 0.35);
  pointer-events: none;
  z-index: 0;
  opacity: 0;
  transition:
    transform var(--duration-base) var(--ease-out),
    width var(--duration-base) var(--ease-out),
    opacity var(--duration-fast) var(--ease-out);
}

.filter-bar.has-indicator .filter-indicator {
  opacity: 1;
}

/* --- Akordeon FAQ (grid-template-rows 0fr -> 1fr) --- */
.faq-list {
  display: grid;
  gap: var(--space-3);
}

.faq-item {
  background-color: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition: border-color var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast) var(--ease-out);
}

.faq-item.is-open {
  border-color: var(--brand-red-border);
  box-shadow: var(--shadow-card);
}

.faq-trigger {
  width: 100%;
  min-height: 54px;
  padding: var(--space-4) var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  text-align: left;
  font-family: var(--font-heading);
  font-size: var(--fs-body);
  font-weight: 700;
  color: var(--text-primary);
  background-color: var(--white);
  transition:
    background-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}

.faq-trigger:hover {
  background-color: var(--slate-soft);
}

.faq-item.is-open .faq-trigger {
  background-color: var(--brand-red-soft);
  color: var(--brand-red);
}

.faq-trigger__label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.faq-trigger__qicon {
  color: var(--text-primary);
  transition: color var(--duration-fast) var(--ease-out);
}

.faq-item.is-open .faq-trigger__qicon {
  color: var(--brand-red);
}

.faq-chevron {
  color: var(--text-primary);
  transition:
    transform var(--duration-base) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}

.faq-item.is-open .faq-chevron {
  transform: rotate(180deg);
  color: var(--brand-red);
}

.faq-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--duration-base) var(--ease-out);
}

.faq-item.is-open .faq-panel {
  grid-template-rows: 1fr;
}

.faq-panel__inner {
  overflow: hidden;
}

.faq-panel__content {
  padding: var(--space-4) var(--space-5) var(--space-5);
  border-top: 1px solid var(--brand-red-tint);
  color: var(--text-secondary);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
}

/* --- Bar Progres Scroll Atas & Preloader --- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: var(--z-progress);
  background: transparent;
  pointer-events: none;
}

.scroll-progress__bar {
  width: 100%;
  height: 100%;
  background-color: var(--brand-red);
  transform: scaleX(0);
  transform-origin: left center;
}

.preloader {
  position: fixed;
  inset: 0;
  z-index: var(--z-preloader);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--cream);
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
}

/* --- Elemen Melayang Kanan Bawah (WA & Kembali ke Atas) --- */
.floating-stack {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: var(--z-floating);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-3);
  pointer-events: none;
}

.floating-stack > * {
  pointer-events: auto;
}

.back-to-top {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--brand-black);
  color: var(--white);
  box-shadow: var(--shadow-float);
  opacity: 0;
  visibility: hidden;
  transform: scale(0.82) translateY(8px);
  transition:
    opacity var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out),
    visibility var(--duration-base) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: scale(1) translateY(0);
}

.back-to-top:hover {
  background-color: var(--brand-black-soft);
}

.back-to-top__ring {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  transform: rotate(-90deg);
  pointer-events: none;
}

.back-to-top__ring circle {
  fill: none;
  stroke: var(--brand-red);
  stroke-width: 2.5;
  stroke-linecap: round;
}

.wa-float-wrap {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.wa-bubble {
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-md);
  background-color: var(--white);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  font-size: var(--fs-caption);
  font-weight: 600;
  white-space: nowrap;
  box-shadow: var(--shadow-float);
  opacity: 0;
  visibility: hidden;
  transform: translateX(10px) scale(0.95);
  transition:
    opacity var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out),
    visibility var(--duration-base) var(--ease-out);
}

.wa-bubble.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateX(0) scale(1);
}

.wa-float {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--whatsapp);
  color: var(--white);
  box-shadow: var(--shadow-wa);
  transition:
    transform var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out);
}

.wa-float:hover {
  background-color: var(--whatsapp-hover);
  transform: scale(1.06);
}

.wa-float .icon {
  width: 1.625rem;
  height: 1.625rem;
}

@media (min-width: 768px) {
  .floating-stack {
    right: 24px;
    bottom: 24px;
  }
}