/* ============================================
   kegiatan.css — Stylesheet Modul Kegiatan Belajar
   SMK Negeri 1 Sintuk Toboh Gadang
   (Clean Borderless Design System)
   ============================================ */

.page-wrapper {
  min-height: 100vh;
  background: var(--bg-body);
  display: flex;
  flex-direction: column;
}

/* Navbar */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-2xl);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 800;
  font-size: var(--fs-md);
  color: var(--text-primary);
  text-decoration: none;
}

.navbar-brand-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-xs);
  font-weight: 800;
  color: #fff;
  box-shadow: 0 4px 12px var(--primary-glow);
}

/* Content Container */
.content-container {
  max-width: 920px;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-xl);
  width: 100%;
  flex: 1;
}

/* Loading Screen */
.loading-screen {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--space-md);
}

.loading-spinner {
  width: 44px;
  height: 44px;
  border: 3.5px solid var(--border-light);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ===== 3D Icons Styling ===== */
.icon-3d {
  display: inline-block;
  object-fit: contain;
  vertical-align: middle;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.08));
}

.tab-3d-icon {
  width: 24px;
  height: 24px;
  object-fit: contain;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.08));
  transition: transform var(--transition-fast);
}

.tab-btn:hover .tab-3d-icon,
.tab-btn.active .tab-3d-icon {
  transform: scale(1.18);
}

.section-3d-icon {
  width: 32px;
  height: 32px;
  object-fit: contain;
  vertical-align: middle;
  filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.06));
}

.header-3d-icon {
  width: 54px;
  height: 54px;
  object-fit: contain;
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.12));
  flex-shrink: 0;
}

.btn-3d-icon,
.btn img {
  width: 20px !important;
  height: 20px !important;
  max-width: 20px !important;
  max-height: 20px !important;
  object-fit: contain !important;
  vertical-align: middle !important;
  display: inline-block !important;
  flex-shrink: 0 !important;
  margin-right: 6px;
}

.badge-3d-icon,
.badge img {
  width: 16px !important;
  height: 16px !important;
  max-width: 16px !important;
  max-height: 16px !important;
  object-fit: contain !important;
  vertical-align: middle !important;
  display: inline-block !important;
  flex-shrink: 0 !important;
  margin-right: 4px;
}

/* ===== Kegiatan Header (Borderless with Soft Shadow) ===== */
.kegiatan-header {
  background: #ffffff;
  border: none;
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  margin-bottom: var(--space-xl);
  box-shadow: 0 4px 24px -2px rgba(0, 0, 0, 0.05);
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.kegiatan-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: var(--radius-full);
  background: var(--primary-subtle);
  color: var(--primary);
  border: none;
  margin-bottom: var(--space-sm);
}

.kegiatan-header h1 {
  font-size: var(--fs-2xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
  line-height: 1.25;
}

.kegiatan-header p {
  color: var(--text-secondary);
  font-size: var(--fs-base);
  margin: 0;
}

/* ===== Segmented Tabs ===== */
.kegiatan-tabs {
  display: flex;
  gap: var(--space-xs);
  background: hsl(220, 20%, 93%);
  padding: 6px;
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
  border: none;
  overflow-x: auto;
}

.tab-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-family);
  font-size: var(--fs-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.6);
}

.tab-btn.active {
  background: #ffffff;
  color: var(--primary);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06);
  font-weight: 700;
}

/* Tab Panels */
.tab-panel {
  display: none;
  animation: fadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.tab-panel.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Section Card (Borderless with Soft Shadow) */
.section-card {
  background: #ffffff;
  border: none;
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: 0 4px 24px -2px rgba(0, 0, 0, 0.05);
  margin-bottom: var(--space-xl);
}

.section-card h2 {
  font-size: var(--fs-xl);
  font-weight: 800;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Tujuan Pembelajaran List */
.tujuan-list {
  padding-left: 0;
  margin: var(--space-lg) 0;
  counter-reset: custom-counter;
}

.tujuan-list li {
  position: relative;
  padding: var(--space-md) var(--space-lg) var(--space-md) 3.5rem;
  margin-bottom: var(--space-sm);
  background: hsl(220, 20%, 98%);
  border-radius: var(--radius-md);
  border: none;
  font-size: var(--fs-base);
  line-height: 1.6;
}

.tujuan-list li::before {
  content: counter(custom-counter);
  counter-increment: custom-counter;
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-xs);
  font-weight: 700;
}

/* ===== Materi Item Cards ===== */
.materi-item {
  background: #ffffff;
  border: none;
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  margin-bottom: var(--space-xl);
  box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.04);
}

.materi-item:last-child {
  margin-bottom: 0;
}

.materi-body {
  color: var(--text-primary);
  font-size: 1.02rem;
  line-height: 1.8;
}

.materi-body p {
  color: var(--text-primary);
  font-size: 1.02rem;
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.materi-body h3 {
  color: var(--text-primary);
  font-size: 1.25rem;
  font-weight: 800;
  margin: var(--space-lg) 0 var(--space-sm) 0;
}

.materi-body ul {
  list-style: disc;
  padding-left: var(--space-xl);
  margin: var(--space-md) 0 var(--space-lg) 0;
}

.materi-body ol {
  list-style: decimal;
  padding-left: var(--space-xl);
  margin: var(--space-md) 0 var(--space-lg) 0;
}

.materi-body li {
  color: var(--text-primary);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: var(--space-xs);
}

.materi-body table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
  background: #ffffff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.materi-body th, .materi-body td {
  padding: var(--space-md) var(--space-lg);
  border: 1px solid var(--border-light);
  font-size: var(--fs-sm);
  line-height: 1.6;
}

.materi-body th {
  background: hsl(220, 25%, 96%);
  font-weight: 800;
  color: var(--text-primary);
}

/* ===== Video Player Container ===== */
.video-wrapper {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: #000;
  box-shadow: var(--shadow-md);
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* ===== Interactive Latihan Cards ===== */
.latihan-card {
  background: #ffffff;
  border: none;
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-lg);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.latihan-pertanyaan {
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  line-height: 1.6;
}

.opsi-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.opsi-label {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: hsl(220, 20%, 97.5%);
  border: 1.5px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--fs-sm);
}

.opsi-label:hover {
  background: var(--primary-subtle);
}

.opsi-label.selected {
  background: hsla(231, 68%, 52%, 0.08);
  border-color: var(--primary);
  font-weight: 600;
}

.opsi-label.correct {
  background: var(--success-subtle);
  border-color: var(--success);
  color: var(--success);
  font-weight: 700;
}

.opsi-label.wrong {
  background: var(--error-subtle);
  border-color: var(--error);
  color: var(--error);
  font-weight: 700;
}

/* Feedback box */
.feedback-box {
  margin-top: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  display: none;
  border: none;
}

.feedback-box.show {
  display: flex;
  align-items: center;
}

/* ===== Modern LMS Bottom Navigation Card ===== */
.bottom-nav-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  padding: var(--space-xl) var(--space-2xl);
  box-shadow: 0 10px 30px -4px rgba(0, 0, 0, 0.06);
  border: 1px solid var(--border-light);
  margin-top: var(--space-2xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.bottom-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.bottom-status-group {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.bottom-status-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: hsl(220, 25%, 96%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.bottom-status-3d {
  width: 26px;
  height: 26px;
  object-fit: contain;
}

.bottom-status-sub {
  font-size: 11px;
  font-weight: 800;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: block;
  margin-bottom: 2px;
}

.bottom-status-title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-base);
  font-weight: 800;
  color: var(--text-primary);
}

.status-indicator-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
}

.status-indicator-dot.warning {
  background: var(--warning);
  box-shadow: 0 0 0 3px var(--warning-subtle);
}

.status-indicator-dot.success {
  background: var(--success);
  box-shadow: 0 0 0 3px var(--success-subtle);
}

.bottom-status-tip {
  font-size: var(--fs-xs);
  color: var(--text-secondary);
  font-weight: 600;
  background: hsl(220, 20%, 97%);
  padding: 6px 14px;
  border-radius: var(--radius-full);
}

.bottom-nav-divider {
  height: 1px;
  background: var(--border-light);
  width: 100%;
}

.bottom-nav-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  width: 100%;
}

.nav-action-left {
  display: flex;
  justify-content: flex-start;
}

.nav-action-right {
  display: flex;
  justify-content: flex-end;
}

.nav-btn-step {
  padding: 0.65rem 1.4rem;
  font-weight: 700;
  border-radius: var(--radius-lg);
  font-size: var(--fs-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 46px;
}

.nav-btn-next {
  background: linear-gradient(135deg, hsl(231, 75%, 52%), hsl(231, 75%, 44%));
  color: #ffffff;
}

.nav-btn-next:hover {
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px var(--primary-glow);
}

.nav-btn-primary {
  padding: 0.75rem 1.8rem;
  font-weight: 800;
  border-radius: var(--radius-lg);
  font-size: var(--fs-sm);
  min-height: 46px;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.nav-arrow {
  font-size: 1.25rem;
  line-height: 1;
  font-weight: 800;
}

/* Responsive */
@media (max-width: 768px) {
  .navbar { padding: var(--space-sm) var(--space-md); }
  .content-container { padding: var(--space-md); }
  .kegiatan-tabs { flex-wrap: nowrap; overflow-x: auto; }
  .tab-btn { padding: 8px 12px; font-size: var(--fs-xs); }
  .kegiatan-header { flex-direction: column; text-align: center; }
  .bottom-nav-actions {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }
  .nav-action-left, .nav-action-center, .nav-action-right {
    justify-content: stretch;
  }
  .nav-action-left .btn, .nav-action-center .btn, .nav-action-right .btn {
    width: 100%;
  }
  .bottom-status-tip {
    display: none;
  }
}