/* =========================================
   Vyom Hans Publications - Component Styles
   ========================================= */

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-weight: var(--weight-semibold);
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.1);
  transform: translateX(-100%);
  transition: transform var(--duration-normal) var(--ease-out);
}

.btn:hover::after {
  transform: translateX(0);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

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

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

.btn-secondary:hover {
  background: var(--color-primary-light);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  border: 2px solid var(--color-accent);
  color: var(--color-accent);
  background: transparent;
}

.btn-outline:hover {
  background: var(--color-accent);
  color: var(--color-primary);
  transform: translateY(-2px);
}

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

.btn-ghost:hover {
  background: var(--color-secondary);
  color: var(--color-primary);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-full);
}

/* ── Book Cards ── */
.book-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  display: flex;
  flex-direction: column;
}

.book-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.book-card__cover {
  position: relative;
  aspect-ratio: 2/3;
  overflow: hidden;
  background: var(--color-secondary);
}

.book-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.book-card:hover .book-card__cover img {
  transform: scale(1.05);
}

.book-card__badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  background: var(--color-accent);
  color: var(--color-primary);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.book-card__formats {
  position: absolute;
  bottom: var(--space-3);
  right: var(--space-3);
  display: flex;
  gap: var(--space-1);
}

.book-card__format-tag {
  background: rgba(67, 110, 238, 0.85);
  color: var(--color-white);
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
  font-size: 10px;
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  backdrop-filter: blur(4px);
}

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

.book-card__category {
  font-size: var(--text-xs);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: var(--weight-semibold);
  margin-bottom: var(--space-2);
}

.book-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-md);
  font-weight: var(--weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-1);
  line-height: var(--leading-snug);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.book-card__author {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  margin-bottom: var(--space-3);
}

.book-card__rating {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
}

.book-card__stars {
  display: flex;
  gap: 2px;
  color: var(--color-accent);
  font-size: var(--text-sm);
}

.book-card__rating-count {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

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

.book-card__price {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-primary);
}

.book-card__price-old {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: line-through;
  margin-left: var(--space-2);
  font-weight: var(--weight-normal);
}

.book-card__cart-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-normal) var(--ease-out);
}

.book-card__cart-btn:hover {
  background: var(--color-accent);
  color: var(--color-primary);
  transform: scale(1.1);
}

/* ── Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-gold {
  background: rgba(135, 206, 235, 0.2);
  color: var(--color-accent-dark);
}

.badge-navy {
  background: rgba(67, 110, 238, 0.1);
  color: var(--color-primary);
}

/* ── Forms ── */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
  outline: none;
}

.form-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(135, 206, 235, 0.25);
}

.form-input::placeholder {
  color: var(--color-text-muted);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2'%3E%3Cpolyline points='6,9 12,15 18,9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: var(--space-10);
}

/* ── Rating Stars ── */
.stars {
  display: inline-flex;
  gap: 2px;
}

.star {
  color: var(--color-border);
  font-size: var(--text-md);
}

.star.filled {
  color: var(--color-accent);
}

/* ── Toast Notification ── */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.toast {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 300px;
  animation: slideInRight var(--duration-normal) var(--ease-out);
  border-left: 4px solid var(--color-accent);
}

.toast-success { border-left-color: var(--color-success); }
.toast-error { border-left-color: var(--color-error); }

.toast-close {
  margin-left: auto;
  opacity: 0.6;
  cursor: pointer;
  transition: opacity var(--duration-fast);
}

.toast-close:hover { opacity: 1; }

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* ── Category Cards ── */
.category-card {
  background: var(--color-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.category-card:hover::before {
  opacity: 1;
}

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

.category-card__icon {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-3);
  position: relative;
  z-index: 1;
  transition: transform var(--duration-normal) var(--ease-out);
}

.category-card:hover .category-card__icon {
  transform: scale(1.15);
}

.category-card__name {
  font-family: var(--font-heading);
  font-size: var(--text-md);
  font-weight: var(--weight-semibold);
  color: var(--color-primary);
  position: relative;
  z-index: 1;
  transition: color var(--duration-normal) var(--ease-out);
}

.category-card:hover .category-card__name {
  color: var(--color-accent);
}

.category-card__count {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
  position: relative;
  z-index: 1;
  transition: color var(--duration-normal) var(--ease-out);
}

.category-card:hover .category-card__count {
  color: var(--color-text-on-dark-muted);
}

/* ── Testimonial Card ── */
.testimonial-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
  position: relative;
  transition: transform var(--duration-normal) var(--ease-out);
}

.testimonial-card:hover {
  transform: translateY(-4px);
}

.testimonial-card__quote {
  font-size: var(--text-4xl);
  color: var(--color-accent);
  font-family: var(--font-heading);
  line-height: 1;
  margin-bottom: var(--space-4);
  opacity: 0.3;
}

.testimonial-card__text {
  font-size: var(--text-md);
  line-height: var(--leading-relaxed);
  color: var(--color-text);
  margin-bottom: var(--space-6);
  font-style: italic;
}

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

.testimonial-card__avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-weight: var(--weight-bold);
  font-size: var(--text-md);
}

.testimonial-card__name {
  font-weight: var(--weight-semibold);
  font-size: var(--text-sm);
}

.testimonial-card__role {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ── Back to Top ── */
.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--color-accent);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  z-index: var(--z-sticky);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
}

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

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-gold);
}