/**
 * SunoPadho — Reusable Components Design System
 */

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-space-2);
  font-weight: 600;
  font-size: var(--sp-text-sm);
  line-height: 1;
  padding: 12px 20px;
  border-radius: var(--sp-radius-md);
  transition: all var(--sp-transition-fast);
  text-align: center;
  white-space: nowrap;
  user-select: none;
  border: 1px solid transparent;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--sp-emerald-850);
  color: var(--sp-text-inverse);
  box-shadow: 0 2px 6px rgba(11, 93, 59, 0.2);
}

.btn-primary:hover {
  background-color: var(--sp-emerald-800);
  box-shadow: 0 4px 12px rgba(11, 93, 59, 0.3);
}

.btn-secondary {
  background-color: var(--sp-navy-850);
  color: var(--sp-text-inverse);
  box-shadow: 0 2px 6px rgba(11, 30, 40, 0.2);
}

.btn-secondary:hover {
  background-color: var(--sp-navy-800);
  box-shadow: 0 4px 12px rgba(11, 30, 40, 0.3);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--sp-border-strong);
  color: var(--sp-text-primary);
}

.btn-outline:hover {
  border-color: var(--sp-navy-850);
  background-color: var(--sp-surface-subtle);
}

.btn-outline-emerald {
  background-color: transparent;
  border-color: var(--sp-emerald-700);
  color: var(--sp-emerald-850);
}

.btn-outline-emerald:hover {
  background-color: var(--sp-emerald-50);
}

.btn-ghost {
  background-color: transparent;
  color: var(--sp-text-secondary);
}

.btn-ghost:hover {
  background-color: var(--sp-surface-subtle);
  color: var(--sp-text-primary);
}

.btn-icon {
  padding: 10px;
  border-radius: var(--sp-radius-full);
}

.btn-sm {
  padding: 8px 14px;
  font-size: var(--sp-text-xs);
  border-radius: var(--sp-radius-sm);
}

.btn-lg {
  padding: 16px 28px;
  font-size: var(--sp-text-base);
  border-radius: var(--sp-radius-lg);
}

/* ==========================================================================
   FORMAT & STATUS BADGES (Suno, Padho, Suno+Padho)
   ========================================================================== */
.format-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: var(--sp-radius-full);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.format-pill-suno {
  background-color: #E8F1F5;
  color: var(--sp-navy-850);
  border: 1px solid rgba(11, 30, 40, 0.12);
}

.format-pill-padho {
  background-color: #E6F7EF;
  color: var(--sp-emerald-850);
  border: 1px solid rgba(11, 93, 59, 0.15);
}

.format-pill-sync {
  background: linear-gradient(135deg, #E8F1F5 0%, #E6F7EF 100%);
  color: var(--sp-navy-950);
  border: 1px solid rgba(11, 93, 59, 0.25);
}

.premium-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: var(--sp-radius-xs);
  background: linear-gradient(135deg, #FFF6E5, #FEECCC);
  color: #925807;
  border: 1px solid #FCD692;
  font-size: 11px;
  font-weight: 700;
}

.free-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: var(--sp-radius-xs);
  background-color: var(--sp-emerald-50);
  color: var(--sp-emerald-850);
  font-size: 11px;
  font-weight: 700;
}

/* ==========================================================================
   LANGUAGE & CATEGORY CHIPS
   ========================================================================== */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background-color: var(--sp-surface-pure);
  border: 1px solid var(--sp-border-default);
  border-radius: var(--sp-radius-full);
  font-size: var(--sp-text-sm);
  font-weight: 500;
  color: var(--sp-text-secondary);
  cursor: pointer;
  transition: all var(--sp-transition-fast);
  white-space: nowrap;
}

.chip:hover {
  border-color: var(--sp-navy-600);
  color: var(--sp-navy-850);
  background-color: var(--sp-surface-subtle);
}

.chip.active {
  background-color: var(--sp-navy-850);
  border-color: var(--sp-navy-850);
  color: var(--sp-text-inverse);
}

.chip.chip-emerald.active {
  background-color: var(--sp-emerald-850);
  border-color: var(--sp-emerald-850);
}

/* ==========================================================================
   BOOK CARD (Standard Grid Vertical)
   ========================================================================== */
.book-card {
  display: flex;
  flex-direction: column;
  background-color: var(--sp-surface-pure);
  border-radius: var(--sp-radius-lg);
  border: 1px solid var(--sp-border-subtle);
  overflow: hidden;
  position: relative;
  transition: all var(--sp-transition-base);
  height: 100%;
}

.book-card:hover {
  transform: translateY(-4px);
  border-color: var(--sp-border-default);
  box-shadow: var(--sp-shadow-md);
}

.book-card-cover-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1.45;
  background: linear-gradient(135deg, #1C3545, #0B1E28);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.book-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--sp-transition-slow);
}

.book-card:hover .book-card-img {
  transform: scale(1.04);
}

/* Fallback cover styling */
.book-cover-art {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--sp-space-5);
  color: #FFFFFF;
  position: relative;
}

.book-card-badges {
  position: absolute;
  top: 10px;
  left: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 2;
}

.book-card-duration {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(11, 30, 40, 0.85);
  backdrop-filter: blur(4px);
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--sp-radius-sm);
  display: flex;
  align-items: center;
  gap: 4px;
}

.book-card-info {
  padding: var(--sp-space-4);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.book-card-title {
  font-size: var(--sp-text-base);
  font-weight: 700;
  color: var(--sp-navy-950);
  margin-bottom: 4px;
  line-height: 1.3;
}

.book-card-author {
  font-size: var(--sp-text-xs);
  color: var(--sp-text-secondary);
  margin-bottom: var(--sp-space-3);
}

.book-card-meta {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--sp-space-3);
  border-top: 1px solid var(--sp-border-subtle);
}

.book-card-lang {
  font-size: 11px;
  font-weight: 600;
  color: var(--sp-text-tertiary);
}

.book-card-price {
  font-size: var(--sp-text-sm);
  font-weight: 700;
  color: var(--sp-emerald-850);
}

/* Quick Action Overlay on Card */
.book-card-quick-actions {
  position: absolute;
  inset: 0;
  background: rgba(11, 30, 40, 0.7);
  backdrop-filter: blur(2px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-space-2);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--sp-transition-fast);
  z-index: 5;
  padding: var(--sp-space-4);
}

.book-card:hover .book-card-quick-actions {
  opacity: 1;
  pointer-events: auto;
}

@media (hover: none) {
  .book-card-quick-actions {
    display: none !important;
  }
}

/* ==========================================================================
   HORIZONTAL BOOK CARD (Continue Learning / Compact List)
   ========================================================================== */
.horizontal-book-card {
  display: flex;
  gap: var(--sp-space-4);
  background-color: var(--sp-surface-pure);
  border: 1px solid var(--sp-border-subtle);
  border-radius: var(--sp-radius-lg);
  padding: var(--sp-space-4);
  position: relative;
  transition: all var(--sp-transition-fast);
  align-items: center;
}

.horizontal-book-card:hover {
  border-color: var(--sp-border-default);
  box-shadow: var(--sp-shadow-sm);
}

.horizontal-cover-wrap {
  width: 72px;
  height: 98px;
  flex-shrink: 0;
  border-radius: var(--sp-radius-sm);
  overflow: hidden;
  box-shadow: var(--sp-shadow-xs);
}

.horizontal-cover-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.horizontal-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.horizontal-title {
  font-size: var(--sp-text-sm);
  font-weight: 700;
  color: var(--sp-navy-900);
}

.horizontal-author {
  font-size: var(--sp-text-xs);
  color: var(--sp-text-secondary);
}

.horizontal-progress-wrap {
  margin-top: 6px;
}

.progress-bar-bg {
  width: 100%;
  height: 5px;
  background-color: var(--sp-surface-subtle);
  border-radius: var(--sp-radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--sp-emerald-700), var(--sp-emerald-500));
  border-radius: var(--sp-radius-full);
}

.progress-info-text {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--sp-text-tertiary);
  margin-top: 3px;
}

/* ==========================================================================
   CURATED COLLECTION CARD
   ========================================================================== */
.collection-card {
  border-radius: var(--sp-radius-xl);
  background: linear-gradient(135deg, var(--sp-navy-900) 0%, #153A4C 100%);
  color: #FFFFFF;
  padding: var(--sp-space-6);
  position: relative;
  overflow: hidden;
  min-height: 190px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--sp-shadow-md);
  transition: all var(--sp-transition-base);
}

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

.collection-card-emerald {
  background: linear-gradient(135deg, var(--sp-emerald-950) 0%, var(--sp-emerald-850) 100%);
}

.collection-card-slate {
  background: linear-gradient(135deg, #1C272C 0%, #2E3E47 100%);
}

.collection-card-title {
  font-size: var(--sp-text-xl);
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 6px;
}

.collection-card-desc {
  font-size: var(--sp-text-xs);
  color: rgba(255, 255, 255, 0.8);
  max-width: 260px;
}

.collection-card-count {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--sp-emerald-300);
}

/* ==========================================================================
   MODALS & DRAWERS
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--sp-z-modal-backdrop);
  background-color: rgba(7, 21, 29, 0.65);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-space-4);
  opacity: 0;
  visibility: hidden;
  transition: all var(--sp-transition-base);
}

.modal-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background-color: var(--sp-surface-pure);
  border-radius: var(--sp-radius-xl);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--sp-shadow-xl);
  transform: scale(0.95) translateY(10px);
  transition: all var(--sp-transition-base);
  position: relative;
}

.modal-backdrop.open .modal-card {
  transform: scale(1) translateY(0);
}

.modal-header {
  padding: var(--sp-space-5) var(--sp-space-6);
  border-bottom: 1px solid var(--sp-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: var(--sp-text-lg);
  font-weight: 700;
  color: var(--sp-navy-950);
}

.modal-close-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--sp-text-tertiary);
  transition: all var(--sp-transition-fast);
}

.modal-close-btn:hover {
  background-color: var(--sp-surface-subtle);
  color: var(--sp-text-primary);
}

.modal-body {
  padding: var(--sp-space-6);
}

.modal-footer {
  padding: var(--sp-space-4) var(--sp-space-6);
  border-top: 1px solid var(--sp-border-subtle);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--sp-space-3);
}

/* ==========================================================================
   TOAST NOTIFICATIONS
   ========================================================================== */
.toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: var(--sp-z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--sp-space-2);
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: var(--sp-space-3);
  padding: 12px 18px;
  background-color: var(--sp-navy-900);
  color: #FFFFFF;
  border-radius: var(--sp-radius-md);
  box-shadow: var(--sp-shadow-lg);
  font-size: var(--sp-text-sm);
  font-weight: 500;
  transform: translateX(120%);
  transition: transform var(--sp-transition-base);
}

.toast.show {
  transform: translateX(0);
}

.toast-success {
  border-left: 4px solid var(--sp-emerald-500);
}

.toast-info {
  border-left: 4px solid var(--sp-navy-300);
}

/* ==========================================================================
   SKELETON LOADERS
   ========================================================================== */
.skeleton {
  background: linear-gradient(90deg, #EDF1F4 25%, #F7FAFB 50%, #EDF1F4 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
  border-radius: var(--sp-radius-sm);
}

@keyframes skeleton-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}