@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700;800&family=Outfit:wght@600;700;800&display=swap');

:root {
  /* KauList Brand Color System */
  --color-background: #fcfbf8;
  --color-surface: #ffffff;
  --color-text: #252525;
  --color-text-muted: #6b6b6b;
  --color-primary: #8bcf3f;
  --color-primary-dark: #5d9824;
  --color-primary-soft: #f1f8e8;
  --color-border: #e8e4de;
  --color-danger: #d94b4b;
  --color-danger-soft: #fdf2f2;

  /* Border Radii (10px ~ 14px, NO capsules) */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  /* Shadows (Subtle) */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);

  --max-width: 880px;
  --max-width-lp: 1040px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Organic Cow Spot Background Accents (Top-Right & Bottom-Left ONLY, minimal count & low opacity) */
body::before {
  content: "";
  position: fixed;
  top: -30px;
  right: -30px;
  width: 240px;
  height: 220px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'%3E%3Cpath fill='%23252525' fill-opacity='0.025' d='M120,20 C160,10 190,40 180,90 C170,140 130,170 80,160 C40,150 10,110 30,60 C50,10 80,30 120,20 Z'/%3E%3Cpath fill='%23252525' fill-opacity='0.015' d='M30,130 C60,110 90,130 80,160 C70,185 40,190 20,170 C5,155 10,145 30,130 Z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: top right;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: "";
  position: fixed;
  bottom: -40px;
  left: -40px;
  width: 250px;
  height: 230px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'%3E%3Cpath fill='%23252525' fill-opacity='0.025' d='M70,30 C120,15 160,50 150,110 C140,160 90,185 40,170 C10,155 -10,110 10,60 C30,20 40,45 70,30 Z'/%3E%3Cpath fill='%23252525' fill-opacity='0.015' d='M140,40 C170,25 190,50 180,80 C170,105 140,100 130,80 C120,65 125,50 140,40 Z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: bottom left;
  pointer-events: none;
  z-index: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.25;
}

.brand-font {
  font-family: 'Outfit', 'Noto Sans JP', sans-serif;
}

a {
  color: var(--color-primary-dark);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--color-primary);
}

/* Layout */
.main-container {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.85rem 0.85rem 2rem 0.85rem;
  position: relative;
  z-index: 1;
}

/* Responsive Header (2-tier on Mobile, 1-row on Desktop) */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.45rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.header-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  width: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: 'Outfit', sans-serif;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-text);
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  object-fit: cover;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
}

.user-display-name {
  font-size: 0.775rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-background);
  padding: 0.2rem 0.45rem;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  max-width: 90px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.list-select-input {
  font-weight: 700;
  padding: 0.4rem 1.8rem 0.4rem 0.65rem;
  font-size: 0.85rem;
  background-color: var(--color-background);
  width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.header-switcher-mobile {
  display: block;
  width: 100%;
}

.header-switcher-desktop {
  display: none;
}

@media (min-width: 641px) {
  .header-container {
    padding: 0.55rem 0.85rem;
    flex-direction: row;
    align-items: center;
    gap: 1rem;
  }

  .header-switcher-mobile {
    display: none;
  }

  .header-switcher-desktop {
    display: block;
    flex: 1;
    max-width: 260px;
    margin: 0 0.5rem;
  }

  .user-display-name {
    max-width: 140px;
  }
}

/* Surfaces & Cards */
.surface-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.9rem;
  margin-bottom: 0.9rem;
}

/* Natural Header Section for List */
.list-header-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-border);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  line-height: 1.2;
}

.badge-owner {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.badge-member {
  background: var(--color-background);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  user-select: none;
  text-decoration: none;
  line-height: 1.3;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #ffffff;
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-primary-soft);
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
}

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

.btn-ghost:hover:not(:disabled) {
  background-color: var(--color-border);
  color: var(--color-text);
}

.btn-danger {
  background-color: var(--color-danger-soft);
  color: var(--color-danger);
  border-color: rgba(217, 75, 75, 0.2);
}

.btn-danger:hover:not(:disabled) {
  background-color: var(--color-danger);
  color: #ffffff;
}

.btn-sm {
  padding: 0.3rem 0.65rem;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
}

.btn-icon {
  padding: 0.4rem;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
}

/* Dropdown Menu for 3-dots */
.dropdown-wrapper {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 0.3rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  min-width: 160px;
  padding: 0.3rem 0;
  z-index: 1000;
  display: none;
}

.dropdown-menu.show {
  display: block;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  width: 100%;
  padding: 0.45rem 0.75rem;
  border: none;
  background: transparent;
  color: var(--color-text);
  font-size: 0.825rem;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
}

.dropdown-item:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.dropdown-item.danger {
  color: var(--color-danger);
}

.dropdown-item.danger:hover {
  background: var(--color-danger-soft);
}

/* Forms & Inputs */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text);
}

.form-control {
  width: 100%;
  font-family: inherit;
  font-size: 0.875rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  appearance: none;
  height: 35px;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2.5px var(--color-primary-soft);
}

.form-control.is-invalid {
  border-color: var(--color-danger);
}

.form-error-text {
  font-size: 0.75rem;
  color: var(--color-danger);
  margin-top: 0.2rem;
  font-weight: 600;
}

.form-control::placeholder {
  color: #a0a0a0;
}

select.form-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%236b6b6b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.65rem center;
  padding-right: 2rem;
}

/* Category Filter Chips */
.chip-group {
  display: flex;
  gap: 0.35rem;
  overflow-x: auto;
  padding: 0.15rem 0;
  scrollbar-width: none;
}

.chip-group::-webkit-scrollbar {
  display: none;
}

.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.3rem 0.75rem;
  height: 30px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
  user-select: none;
}

.chip:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
  background: var(--color-primary-soft);
}

.chip.active, input[type="radio"]:checked + .chip {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  border-color: var(--color-primary);
  font-weight: 700;
}

/* Category Tags */
.cat-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.1rem 0.45rem;
  border-radius: 4px;
  font-size: 0.725rem;
  font-weight: 600;
  background: var(--color-background);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

/* Item List */
.items-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.item-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 0.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.15s ease;
  min-height: 52px;
}

.item-row:hover {
  border-color: var(--color-primary);
}

.item-row.bought {
  background: var(--color-background);
  opacity: 0.6;
}

.item-row.bought .item-name {
  text-decoration: line-through;
  color: var(--color-text-muted);
}

/* Custom Square Checkbox */
.checkbox-custom {
  width: 20px;
  height: 20px;
  border-radius: 5px;
  border: 2px solid var(--color-border);
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.15s ease;
}

.checkbox-custom:hover {
  border-color: var(--color-primary);
}

.checkbox-custom.checked, input[type="checkbox"]:checked + .checkbox-custom {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.checkbox-custom svg {
  width: 12px;
  height: 12px;
  stroke: #ffffff;
  stroke-width: 3;
  fill: none;
  opacity: 0;
}

.checkbox-custom.checked svg, input[type="checkbox"]:checked + .checkbox-custom svg {
  opacity: 1;
}

/* Empty State */
.empty-state-container {
  text-align: center;
  padding: 1.25rem 0.85rem;
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  margin-top: 0.35rem;
}

.empty-state-img {
  width: 76px;
  height: 76px;
  border-radius: 12px;
  object-fit: cover;
}

.empty-state-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
}

.empty-state-desc {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* LP Specific Responsive Styles (4-col Desktop, 2-col Tablet, 1-col Mobile) */
.lp-features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.lp-feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.35rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.lp-feature-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

@media (max-width: 1023px) {
  .lp-features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .lp-features-grid {
    grid-template-columns: 1fr;
  }
}

/* Dialog */
dialog {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
  padding: 1.25rem;
  max-width: 420px;
  width: 90%;
  margin: auto;
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.35);
}

/* Alerts */
.alert-error {
  background-color: var(--color-danger-soft);
  color: var(--color-danger);
  border: 1px solid rgba(217, 75, 75, 0.2);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
}

/* Responsive */
@media (max-width: 640px) {
  .main-container {
    padding: 0.75rem 0.65rem 1.5rem 0.65rem;
  }

  .list-header-section {
    align-items: center;
    gap: 0.5rem;
  }

  .form-row-desktop {
    flex-direction: column;
  }
}