/* ============================================
   eBook Manager — Responsive Breakpoints
   ============================================ */

@import url('components.css');

/* ── Mobile-first: < 768px ── */
@media (max-width: 767px) {
  html {
    font-size: 15px;
  }

  /* Header */
  .header {
    padding: 10px 16px;
  }

  .header__inner {
    flex-wrap: wrap;
    gap: 12px;
  }

  .header__logo {
    font-size: 1.1rem;
  }

  .header__search {
    order: 3;
    max-width: 100%;
    flex-basis: 100%;
  }

  .header__actions .btn span.btn-label {
    display: none;
  }

  /* Filters */
  .filters {
    padding: 16px;
    gap: 6px;
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .filters::-webkit-scrollbar {
    display: none;
  }

  /* Grid */
  .books-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 14px;
    padding: 0 16px 32px;
  }

  /* Cards */
  .book-card__body {
    padding: 12px;
  }

  .book-card__title {
    font-size: 0.875rem;
  }

  .book-card__author {
    font-size: 0.75rem;
  }

  /* Modal */
  .modal-overlay {
    align-items: flex-end;
    padding: 0;
  }

  .modal {
    max-width: 100%;
    max-height: 92vh;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  }

  .modal__header {
    padding: 16px 20px;
  }

  .modal__body {
    padding: 20px;
  }

  .modal__footer {
    padding: 14px 20px;
  }

  /* Login */
  .login-card {
    padding: 36px 24px;
    border-radius: var(--radius-lg);
  }

  .login-card__title {
    font-size: 1.5rem;
  }

  /* Toasts */
  .toast-container {
    top: 12px;
    right: 12px;
    left: 12px;
  }

  .toast {
    max-width: 100%;
  }

  /* Touch-friendly tap targets */
  .btn {
    min-height: 44px;
  }

  .filter-chip {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

  .btn-icon {
    width: 44px;
    height: 44px;
  }

  .form-input,
  .form-textarea {
    min-height: 44px;
    font-size: 16px; /* prevent iOS zoom on focus */
  }

  /* Empty state */
  .empty-state {
    padding: 48px 16px;
  }

  .empty-state__icon {
    font-size: 3rem;
  }

  /* Upload area */
  .upload-area {
    padding: 24px 16px;
    min-height: 120px;
  }
}

/* ── Tablet: 768px — 1024px ── */
@media (min-width: 768px) and (max-width: 1024px) {
  .books-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
    padding: 0 20px 36px;
  }

  .header {
    padding: 12px 20px;
  }

  .header__search {
    max-width: 360px;
  }

  .filters {
    padding: 16px 20px;
  }
}

/* ── Desktop: > 1024px ── */
@media (min-width: 1025px) {
  .books-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
  }

  .header__search {
    max-width: 480px;
  }
}

/* ── Large Desktop: > 1400px ── */
@media (min-width: 1401px) {
  .books-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
}

/* ── Reduce motion ── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}