/* ============================================================
   PAGINATIVE — Composants réutilisables
   ============================================================ */

/* ── Buttons ─────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--r-md);
  border: none;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--t-action) var(--ease-book);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--t-fast);
}

.btn:hover::before { background: rgba(255,255,255,0.06); }
.btn:active { transform: scale(0.98); }

.btn--primary {
  background: var(--accent);
  color: var(--text-inv);
  box-shadow: 0 2px 12px var(--accent-glow);
}

.btn--primary:hover {
  box-shadow: 0 4px 20px var(--accent-glow);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-2);
}

.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-bg);
}

.btn--text {
  background: transparent;
  color: var(--text-2);
  padding: 0.5rem 0.75rem;
}

.btn--text:hover { color: var(--accent); background: var(--accent-bg); }

.btn--sm  { padding: 0.45rem 1rem; font-size: 0.875rem; }
.btn--lg  { padding: 0.85rem 1.75rem; font-size: 1rem; }
.btn--full { width: 100%; justify-content: center; }

.btn[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

.btn--loading .btn-text { opacity: 0; }
.btn--loading::after {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* ── Inputs ──────────────────────────────────────────── */
.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.field label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: 0.01em;
}

.input {
  width: 100%;
  padding: 0.7rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--r-md);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.5;
  transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
  -webkit-appearance: none;
  appearance: none;
}

.input::placeholder { color: var(--text-3); }

.input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: var(--surface-2);
}

.input--error {
  border-color: var(--error);
  box-shadow: 0 0 0 3px rgba(224,92,92,0.15);
}

.field-error {
  font-size: 0.8125rem;
  color: var(--error);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.input-wrapper {
  position: relative;
}

.input-wrapper .input { padding-right: 2.75rem; }

.input-icon {
  position: absolute;
  right: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-3);
  cursor: pointer;
  transition: color var(--t-fast);
  background: none;
  border: none;
  display: flex;
}

.input-icon:hover { color: var(--accent); }

/* ── Cards ───────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 1.5rem;
  transition: border-color var(--t-action) var(--ease-book),
              box-shadow var(--t-action) var(--ease-book),
              transform var(--t-action) var(--ease-book);
}

.card--hover:hover {
  border-color: var(--border-2);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card--accent {
  border-color: var(--accent);
  box-shadow: var(--shadow-gold);
}

/* ── Badges UI ───────────────────────────────────────── */
.badge-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--r-full);
  font-size: 0.8rem;
  font-weight: 500;
  background: var(--accent-bg);
  color: var(--accent);
  border: 1px solid rgba(201,168,76,0.2);
}

/* ── Skeleton loaders ────────────────────────────────── */
@keyframes shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--surface) 25%,
    var(--surface-2) 50%,
    var(--surface) 75%
  );
  background-size: 800px 100%;
  animation: shimmer 1.5s infinite linear;
  border-radius: var(--r-sm);
}

.skeleton-text {
  height: 1em;
  border-radius: var(--r-xs);
}

.skeleton-cover {
  aspect-ratio: 2/3;
  border-radius: var(--r-sm);
}

/* ── Toast notifications ─────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-md);
  font-size: 0.9375rem;
  color: var(--text);
  pointer-events: all;
  animation: slide-up var(--t-reveal) var(--ease-reveal) both;
  max-width: 360px;
}

.toast--success { border-left: 3px solid var(--success); }
.toast--error   { border-left: 3px solid var(--error); }
.toast--info    { border-left: 3px solid var(--accent); }

.toast.toast--out {
  animation: fade-out var(--t-action) var(--ease-book) forwards;
}

@keyframes fade-out {
  to { opacity: 0; transform: translateX(20px); }
}

/* ── Modal ───────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: fade-in var(--t-fast) ease both;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--r-xl);
  padding: 2rem;
  width: 100%;
  max-width: 480px;
  box-shadow: var(--shadow-lg);
  animation: scale-in var(--t-page) var(--ease-settle) both;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-3);
  cursor: pointer;
  padding: 0.4rem;
  border-radius: var(--r-sm);
  transition: color var(--t-fast), background var(--t-fast);
}

.modal-close:hover { color: var(--text); background: var(--bg-2); }

/* ── Nav ─────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(13,12,20,0.85);
  transition: background var(--t-action) var(--ease-book);
}

[data-theme="light"] .nav {
  background: rgba(250,244,238,0.88);
}

[data-theme="boost"] .nav {
  background: rgba(250,250,254,0.88);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  padding: 0 1.25rem;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--text);
  letter-spacing: -0.02em;
}

.nav-logo span { color: var(--accent); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ── Theme switcher ──────────────────────────────────── */
.theme-switcher {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-full);
  padding: 3px;
}

.theme-btn {
  width: 28px;
  height: 28px;
  border: none;
  border-radius: var(--r-full);
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  transition: background var(--t-fast);
}

.theme-btn:hover { background: var(--bg-2); }
.theme-btn.active { background: var(--accent-bg); }

/* ── Book cover ──────────────────────────────────────── */
.book-cover {
  aspect-ratio: 2/3;
  border-radius: var(--r-sm);
  object-fit: cover;
  background: var(--surface-2);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--t-action) var(--ease-book),
              transform var(--t-action) var(--ease-book);
}

.book-cover:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px) rotate(-0.5deg);
}

/* ── Stars rating ────────────────────────────────────── */
.stars {
  display: inline-flex;
  gap: 2px;
  color: var(--accent);
  font-size: 1rem;
}

.stars .star-empty { color: var(--border-2); }

/* ── Progress bar ────────────────────────────────────── */
.progress-bar {
  height: 1.5px;
  background: var(--border);
  border-radius: var(--r-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: var(--r-full);
  transition: width 0.6s var(--ease-reveal);
}

/* ── Section title ───────────────────────────────────── */
.section-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

/* ── Coup de cœur indicator ──────────────────────────── */
.coup-de-coeur-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  color: var(--rose);
  font-weight: 500;
}

/* ── Empty state ─────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-3);
}

.empty-state-quote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--text-2);
  margin-bottom: 0.5rem;
}

.empty-state-author {
  font-size: 0.8125rem;
  color: var(--text-3);
  margin-bottom: 2rem;
}

/* ── Responsive helpers ──────────────────────────────── */
@media (max-width: 640px) {
  .hide-mobile { display: none !important; }
}

@media (min-width: 641px) {
  .hide-desktop { display: none !important; }
}