/* ============================================
   Lista de Compras - Design Minimalista
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

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

:root {
  --bg: #f5f5f0;
  --surface: #ffffff;
  --surface-2: #f0f0eb;
  --border: #e4e4de;
  --text: #1a1a18;
  --text-secondary: #6b6b60;
  --accent: #4f6ef7;
  --accent-hover: #3a58e0;
  --accent-light: #eef0fe;
  --danger: #e53935;
  --danger-light: #fdecea;
  --success: #43a047;
  --purchased: #b0b0a8;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --radius: 10px;
  --transition: 0.18s ease;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ---- Auth Layout ---- */
.auth-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 36px;
  width: 100%;
  max-width: 380px;
  box-shadow: var(--shadow-md);
}

.auth-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}

.auth-logo svg {
  width: 32px;
  height: 32px;
  color: var(--accent);
}

.auth-logo span {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.3px;
}

.auth-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
  letter-spacing: -0.3px;
}

.auth-subtitle {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 28px;
}

/* ---- Forms ---- */
.form-group {
  margin-bottom: 16px;
}

label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

input[type="text"],
input[type="email"],
input[type="password"] {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 10px 18px;
  border: none;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
  user-select: none;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  width: 100%;
  padding: 11px;
  font-size: 0.95rem;
  margin-top: 8px;
}
.btn-primary:hover { background: var(--accent-hover); }

.btn-secondary {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--border); }

.btn-danger {
  background: var(--danger-light);
  color: var(--danger);
}
.btn-danger:hover { background: #fbd0ce; }

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 7px;
}
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }

.btn-icon {
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: 8px;
}

/* ---- Auth Link ---- */
.auth-link {
  text-align: center;
  margin-top: 20px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.auth-link a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}
.auth-link a:hover { text-decoration: underline; }

/* ---- Alert / Toast ---- */
.alert {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.875rem;
  margin-bottom: 16px;
  display: none;
}
.alert.show { display: block; }
.alert-error { background: var(--danger-light); color: var(--danger); }
.alert-success { background: #e8f5e9; color: var(--success); }

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--text);
  color: #fff;
  padding: 11px 20px;
  border-radius: 30px;
  font-size: 0.875rem;
  font-weight: 500;
  opacity: 0;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 9999;
  pointer-events: none;
  white-space: nowrap;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---- App Layout ---- */
.app-layout {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 16px 80px;
  min-height: 100vh;
}

/* ---- Header ---- */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0 16px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.2px;
}

.header-logo svg { color: var(--accent); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.user-chip {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px 6px 8px;
  background: var(--surface-2);
  border-radius: 30px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.user-avatar {
  width: 22px;
  height: 22px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* ---- Page Title ---- */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  gap: 12px;
}

.page-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.4px;
}

.page-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ---- Back Button ---- */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  margin-bottom: 20px;
  transition: color var(--transition);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  font-family: inherit;
}
.back-btn:hover { color: var(--text); }

/* ---- Input Row (inline add) ---- */
.add-row {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}

.add-row input {
  flex: 1;
}

.add-row .btn {
  flex-shrink: 0;
  padding: 10px 16px;
}

/* ---- Card List ---- */
.card-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), border-color var(--transition);
  cursor: default;
}

.card:hover { box-shadow: var(--shadow-md); border-color: #d8d8d2; }

.card-drag-handle {
  color: var(--border);
  cursor: grab;
  flex-shrink: 0;
  padding: 2px;
  transition: color var(--transition);
}
.card-drag-handle:hover { color: var(--text-secondary); }
.card.dragging { opacity: 0.4; }
.card.drag-over { border-color: var(--accent); background: var(--accent-light); }

.card-info {
  flex: 1;
  min-width: 0;
}

.card-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
}

.card-meta {
  font-size: 0.775rem;
  color: var(--text-secondary);
  margin-top: 2px;
}

.card-actions {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

/* ---- Item card ---- */
.item-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow);
  transition: opacity var(--transition);
}

.item-card.purchased {
  opacity: 0.55;
}

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

.item-check {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-radius: 50%;
  flex-shrink: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), border-color var(--transition);
}
.item-check:hover { border-color: var(--accent); }
.item-check.checked { background: var(--success); border-color: var(--success); }
.item-check.checked svg { display: block; }
.item-check svg { display: none; color: #fff; width: 12px; height: 12px; }

.item-name {
  flex: 1;
  font-size: 0.92rem;
  color: var(--text);
  min-width: 0;
  word-break: break-word;
}

.item-meta {
  font-size: 0.72rem;
  color: var(--text-secondary);
  margin-top: 1px;
}

.item-actions {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}

/* ---- Section Label ---- */
.section-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.7px;
  margin: 20px 0 8px;
}

/* ---- Empty State ---- */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-secondary);
}
.empty-state svg { color: var(--border); margin-bottom: 12px; }
.empty-state p { font-size: 0.9rem; }

/* ---- Settings ---- */
.settings-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.settings-section-title {
  padding: 14px 16px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--border);
  gap: 16px;
}
.setting-row:last-child { border-bottom: none; }

.setting-info { flex: 1; }
.setting-label { font-size: 0.9rem; font-weight: 600; color: var(--text); }
.setting-description { font-size: 0.8rem; color: var(--text-secondary); margin-top: 2px; }

/* ---- Toggle Switch ---- */
.toggle {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--border);
  border-radius: 30px;
  cursor: pointer;
  transition: background var(--transition);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  background: white;
  border-radius: 50%;
  top: 3px;
  left: 3px;
  transition: transform var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.toggle input:checked + .toggle-slider {
  background: var(--accent);
}

.toggle input:checked + .toggle-slider::before {
  transform: translateX(20px);
}

/* ---- Modal ---- */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.35);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.show { display: flex; }

.modal {
  background: var(--surface);
  border-radius: 14px;
  padding: 28px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
  animation: modalIn 0.18s ease;
}

@keyframes modalIn {
  from { transform: scale(0.94); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}

.modal-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.modal-actions {
  display: flex;
  gap: 8px;
  margin-top: 20px;
  justify-content: flex-end;
}

/* ---- Spinner ---- */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Nav ---- */
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 7px 12px;
  border-radius: 8px;
  transition: background var(--transition), color var(--transition);
}
.nav-link:hover { background: var(--surface-2); color: var(--text); }
.nav-link.active { background: var(--accent-light); color: var(--accent); }

/* ---- Responsive ---- */
@media (max-width: 480px) {
  .auth-card { padding: 28px 22px; }
  .app-layout { padding: 0 12px 80px; }
  .user-chip span.chip-name { display: none; }
}