/* =============================================
   ShopList — style.css
   Design mobile-first, couleurs douces, animations légères
   ============================================= */

/* ---------- Reset & Variables ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Palette */
  --color-bg:          #f4f6fb;
  --color-surface:     #ffffff;
  --color-surface-2:   #f8f9fd;
  --color-border:      #e4e8f0;
  --color-primary:     #5b8dee;
  --color-primary-dk:  #3d6fcc;
  --color-primary-lt:  #d9e6ff;
  --color-success:     #4cba87;
  --color-success-lt:  #d4f0e4;
  --color-danger:      #e96464;
  --color-text:        #1e2535;
  --color-text-muted:  #7a8299;
  --color-text-light:  #adb5c7;

  /* Typography */
  --font:       'Inter', system-ui, sans-serif;
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  18px;
  --shadow-sm:  0 1px 4px rgba(0,0,0,.06);
  --shadow-md:  0 4px 16px rgba(0,0,0,.08);

  /* Transitions */
  --ease:       cubic-bezier(.4, 0, .2, 1);
}

html { font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  line-height: 1.5;
}

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: 640px;
  margin: 0 auto;
  padding: .9rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: .55rem;
}

.header-icon { font-size: 1.4rem; }

.header-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--color-text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: .75rem;
}

.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease), transform .15s var(--ease);
}

.btn-icon:hover {
  background: var(--color-primary-lt);
  color: var(--color-primary);
  transform: scale(1.05);
}

.btn-icon.spinning svg {
  animation: spin .8s linear infinite;
}

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

.sync-status {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .78rem;
  color: var(--color-text-muted);
}

.sync-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-text-light);
  transition: background .3s;
}

.sync-dot.connected { background: var(--color-success); box-shadow: 0 0 0 3px var(--color-success-lt); }
.sync-dot.syncing    { background: var(--color-primary); animation: pulse .9s ease-in-out infinite; }
.sync-dot.error      { background: var(--color-danger); }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: .35; }
}

/* ---------- Main ---------- */
.main {
  max-width: 640px;
  margin: 0 auto;
  padding: 1.25rem 1rem 5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* ---------- Card ---------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

/* ---------- Add form ---------- */
.section-title {
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--color-text-muted);
  margin-bottom: .9rem;
}

.add-form { display: flex; flex-direction: column; gap: .65rem; }

.form-row {
  display: flex;
  gap: .65rem;
}

.input {
  flex: 1;
  padding: .65rem .9rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-size: .9rem;
  color: var(--color-text);
  background: var(--color-surface-2);
  outline: none;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
  -webkit-appearance: none;
}

.input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(91,141,238,.18);
  background: #fff;
}

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

.input-qty {
  flex: 0 0 56px;
  width: 56px;
  text-align: center;
  padding-left: .4rem;
  padding-right: .4rem;
}
/* Masquer les flèches natives sur Chrome/Safari */
.input-qty::-webkit-outer-spin-button,
.input-qty::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
/* Et sur Firefox */
.input-qty { -moz-appearance: textfield; }

select.input { cursor: pointer; background-image: none; }

/* ---------- Category picker (icônes sélectionnables) ---------- */
.form-row-categories { display: block; }

.category-picker {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  width: 100%;
}

.category-pick {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  line-height: 1;
  border: 1.5px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-md, 10px);
  background: #fff;
  cursor: pointer;
  transition: transform .12s ease, border-color .12s ease, background .12s ease, box-shadow .12s ease;
  user-select: none;
}

.category-pick:hover {
  border-color: var(--color-primary, #4f46e5);
  transform: translateY(-1px);
}

.category-pick.is-active {
  border-color: var(--color-primary, #4f46e5);
  background: color-mix(in srgb, var(--color-primary, #4f46e5) 12%, #fff);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--color-primary, #4f46e5) 25%, transparent);
}

.category-pick:focus-visible {
  outline: 2px solid var(--color-primary, #4f46e5);
  outline-offset: 2px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .65rem 1.1rem;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-size: .88rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s var(--ease), transform .15s var(--ease), box-shadow .2s var(--ease);
  white-space: nowrap;
}

.btn:active { transform: scale(.97); }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(91,141,238,.35);
}
.btn-primary:hover {
  background: var(--color-primary-dk);
  box-shadow: 0 4px 12px rgba(91,141,238,.45);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1.5px solid var(--color-border);
}
.btn-ghost:hover {
  background: var(--color-surface-2);
  color: var(--color-danger);
  border-color: var(--color-danger);
}

/* ---------- Stats bar ---------- */
.stats-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .65rem;
  padding: 0 .25rem;
}

.stats {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .85rem;
  color: var(--color-text-muted);
}
.stats strong { color: var(--color-text); }
.stat-sep { color: var(--color-text-light); }
.stat-done strong { color: var(--color-success); }

.filters {
  display: flex;
  gap: .35rem;
}

.filter-btn {
  padding: .35rem .8rem;
  border: 1.5px solid var(--color-border);
  border-radius: 99px;
  background: transparent;
  font-family: var(--font);
  font-size: .8rem;
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all .2s var(--ease);
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* ---------- Empty state ---------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 3rem 1rem;
  color: var(--color-text-muted);
  text-align: center;
  gap: .75rem;
}
.empty-icon { font-size: 3rem; }
.empty-state p { font-size: .9rem; line-height: 1.7; }

/* ---------- Category group ---------- */
.category-group { margin-bottom: .75rem; }

.category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .45rem .25rem;
  margin-bottom: .35rem;
}

.category-label {
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--color-text-muted);
}

.category-count {
  font-size: .75rem;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 99px;
  padding: .1rem .5rem;
  color: var(--color-text-muted);
}

/* ---------- Item card ---------- */
.item-card {
  display: flex;
  align-items: center;
  gap: .75rem;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: .75rem 1rem;
  margin-bottom: .45rem;
  box-shadow: var(--shadow-sm);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), opacity .25s var(--ease), transform .25s var(--ease);
  animation: slideIn .25s var(--ease) both;
}

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

.item-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 2px 10px rgba(91,141,238,.12);
}

.item-card.is-done {
  opacity: .6;
  background: var(--color-surface-2);
  border-color: var(--color-border);
}

.item-card.is-done .item-name {
  text-decoration: line-through;
  color: var(--color-text-muted);
}

/* Checkbox */
.item-check {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border: 2px solid var(--color-border);
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s var(--ease), border-color .2s var(--ease), transform .15s var(--ease);
  background: transparent;
}

.item-check:hover { border-color: var(--color-primary); transform: scale(1.1); }
.item-check.checked { background: var(--color-success); border-color: var(--color-success); }

.item-check svg { display: none; }
.item-check.checked svg { display: block; }

/* Item info */
.item-info { flex: 1; min-width: 0; }

.item-name {
  font-size: .9rem;
  font-weight: 500;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.item-meta {
  font-size: .76rem;
  color: var(--color-text-muted);
  margin-top: .1rem;
}

/* Quantity badge */
.item-qty {
  flex-shrink: 0;
  background: var(--color-primary-lt);
  color: var(--color-primary);
  font-size: .78rem;
  font-weight: 600;
  padding: .2rem .55rem;
  border-radius: 99px;
}

/* Delete button */
.item-delete {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-text-light);
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease), transform .15s var(--ease);
}

.item-delete:hover {
  background: #ffeaea;
  color: var(--color-danger);
  transform: scale(1.1);
}

/* ---------- Bottom actions ---------- */
.bottom-actions {
  display: flex;
  justify-content: center;
  padding-top: .25rem;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--color-text);
  color: #fff;
  padding: .65rem 1.25rem;
  border-radius: 99px;
  font-size: .85rem;
  font-weight: 500;
  pointer-events: none;
  opacity: 0;
  transition: opacity .3s var(--ease), transform .3s var(--ease);
  z-index: 500;
  white-space: nowrap;
  box-shadow: var(--shadow-md);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 99px; }

/* ---------- Desktop refinements ---------- */
@media (min-width: 540px) {
  .main { padding: 1.75rem 1.5rem 5rem; }
  .item-name { font-size: .95rem; }
}

@media (min-width: 768px) {
  .main { padding: 2rem 1rem 5rem; }
  .header-title { font-size: 1.35rem; }
}