:root {
  --bg: #f4f7fb;
  --panel: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #d8e1ef;
  --accent: #2563eb;
  --accent-soft: #eff6ff;
  --danger: #ef4444;
  --card-bg: #f9fbff;
  --image-bg: #eef2f9;
}

:root[data-theme='dark'] {
  --bg: #121212;
  --panel: #1e1e1e;
  --text: #e8e8e8;
  --muted: #9a9a9a;
  --border: #3a3a3a;
  --accent: #3b82f6;
  --accent-soft: rgba(59, 130, 246, 0.15);
  --danger: #f87171;
  --card-bg: #242424;
  --image-bg: #2c2c2c;
}

body {
  transition: background-color 0.2s ease, color 0.2s ease;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app-shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.brand {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 4px;
}

.subtitle {
  margin: 0;
  color: var(--muted);
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.tabs {
  display: inline-flex;
  gap: 8px;
  background: var(--panel);
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: 12px;
}

.tab {
  border: none;
  background: transparent;
  color: var(--muted);
  font-weight: 700;
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
}

.tab.active {
  background: var(--accent);
  color: white;
}

.ghost-btn,
button {
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 10px 14px;
  font-size: 14px;
  cursor: pointer;
}

button {
  background: var(--accent);
  color: white;
  font-weight: 700;
  border: none;
}

.ghost-btn {
  background: var(--panel);
  color: var(--text);
  text-decoration: none;
  display: inline-block;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  margin-bottom: 18px;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.05);
}

:root[data-theme='dark'] .panel {
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.section-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.badge {
  background: var(--accent-soft);
  color: var(--accent);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 14px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
}

.card:hover {
  transform: scale(1.05);
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.15);
}

.card-image {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  background: var(--image-bg);
  display: block;
}

.card-image-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 28px;
  font-weight: 700;
}

.card-image.card-image-error {
  visibility: hidden;
}

.card-body {
  padding: 12px 14px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.card h3 {
  margin: 0;
  font-size: 15px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.demand-badge {
  display: inline-flex;
  align-self: flex-start;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.demand-badge.demand-low {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
}

.demand-badge.demand-medium {
  background: rgba(217, 164, 6, 0.18);
  color: #d9a406;
}

.demand-badge.demand-high {
  background: rgba(34, 197, 94, 0.16);
  color: #22c55e;
}

.card-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}

.card-exist-count {
  font-size: 11px;
  font-weight: 600;
  color: var(--muted, #9ca3af);
  opacity: 0.85;
}

.trade-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 14px;
}

.trade-side {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  flex-direction: column;
}

.trade-side-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.trade-side-header h3 {
  margin: 0;
}

.trade-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 10px;
  min-height: 120px;
  align-content: start;
  flex: 1;
}

.add-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 190px;
  border: 2px dashed var(--border);
  border-radius: 12px;
  background: transparent;
  color: var(--muted);
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
}

.add-tile:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.add-tile-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
}

.trade-item-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 190px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card-bg);
  padding: 10px;
  gap: 4px;
}

.trade-item-tile .card-image {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 8px;
  flex-shrink: 0;
}

.trade-item-tile .card-image-placeholder {
  font-size: 18px;
}

.trade-item-remove {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 20px;
  height: 20px;
  padding: 0;
  border-radius: 50%;
  background: var(--danger);
  color: white;
  font-size: 12px;
  line-height: 1;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.trade-item-name {
  font-size: 13px;
  font-weight: 700;
  padding-right: 18px;
  word-break: break-word;
  line-height: 1.3;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.trade-item-value {
  font-size: 12px;
  color: var(--muted);
}

.trade-item-qty {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4px;
}

.trade-item-qty button {
  width: 22px;
  height: 22px;
  padding: 0;
  border-radius: 6px;
  font-size: 14px;
  line-height: 1;
}

.trade-item-qty .qty-input {
  width: auto;
  flex: 1;
  max-width: 35px;
  padding: 4px 6px;
  border-radius: 6px;
  height: 22px;
  text-align: center;
  font-weight: 700;
  font-size: 13px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
}

.qty-input::-webkit-outer-spin-button,
.qty-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.qty-input[type=number] {
  -moz-appearance: textfield;
}

select,
input {
  width: 100%;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  font-size: 14px;
  font-family: inherit;
}

input::placeholder {
  color: var(--muted);
}

select:focus,
input:focus {
  outline: none;
  border-color: var(--accent);
}

/* Dark mode für select/input */
:root[data-theme='dark'] select,
:root[data-theme='dark'] input {
  background: var(--panel);
  color: var(--text);
}

:root[data-theme='dark'] select option {
  background: var(--panel);
  color: var(--text);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 100;
}

:root[data-theme='dark'] .modal-overlay {
  background: rgba(0, 0, 0, 0.7);
}

.modal-overlay.hidden {
  display: none;
}

.modal {
  background: var(--panel);
  border-radius: 16px;
  padding: 18px;
  width: 100%;
  max-width: 920px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.3);
}

:root[data-theme='dark'] .modal {
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

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

.modal-header h3 {
  margin: 0;
}

.modal-header .ghost-btn {
  padding: 6px 10px;
}

.picker-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  overflow-y: auto;
  padding-right: 4px;
  flex: 1;
  align-content: start;
}

.picker-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0;
  overflow: hidden;
  background: var(--card-bg);
  cursor: pointer;
  text-align: left;
  display: flex;
  flex-direction: column;
  min-height: 260px;
  color: var(--text);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.picker-card .card-image {
  aspect-ratio: 1 / 1;
  border-radius: 0;
}

.picker-card:hover {
  transform: scale(1.05);
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.15);
  border-color: var(--accent);
}

.picker-card .picker-card-name {
  font-weight: 700;
  font-size: 13px;
  padding: 12px 12px 16px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  word-break: break-word;
  line-height: 1.4;
}

.picker-card .demand-badge {
  padding: 4px 12px;
  margin: 2px 12px;
  align-self: flex-start;
}

.picker-card .picker-card-value {
  color: var(--accent);
  font-weight: 700;
  font-size: 13px;
  padding: 4px 12px;
}

.picker-card .picker-card-exist-count {
  color: var(--muted, #9ca3af);
  font-weight: 600;
  font-size: 11px;
  padding: 4px 12px 12px;
  opacity: 0.85;
}

.trade-total,
.result-box {
  border-top: 1px solid var(--border);
  padding-top: 12px;
  margin-top: 12px;
}

.result-box {
  text-align: center;
  font-size: 18px;
}

.reset-button-row {
  display: flex;
  justify-content: center;
  margin-top: 16px;
}

.reset-btn {
  background: var(--danger);
  color: white;
  padding: 10px 14px;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  transition: background-color 0.2s ease;
}

.reset-btn:hover {
  background: #dc2626;
}

.reset-btn:active {
  background: #b91c1c;
}

.admin-login,
.admin-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  align-items: end;
  margin-bottom: 14px;
}

.admin-login-panel {
  max-width: 420px;
  margin: 0 auto;
  text-align: center;
}

.admin-login-error {
  color: var(--danger);
  font-weight: 700;
  min-height: 18px;
  margin: 8px 0 0;
}

.admin-form-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  grid-column: 1 / -1;
}

.admin-upload {
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 18px;
  background: var(--card-bg);
}

.admin-upload label {
  display: block;
  font-weight: 700;
  margin-bottom: 8px;
}

.admin-upload input[type='file'] {
  margin-bottom: 10px;
}

.upload-status {
  margin: 8px 0 0;
  font-weight: 700;
  color: var(--accent);
  min-height: 18px;
}

.upload-hint {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.admin-list-wrap {
  overflow-x: auto;
}

.search-row {
  margin-top: 16px;
  margin-bottom: 16px;
  display: flex;
  gap: 12px;
  align-items: stretch;
}

.search-row input {
  flex: 1;
  min-width: 809px;
}

.sort-select {
  min-width: 80px;
  flex-shrink: 1;
}

.admin-list-wrap .search-row {
  margin-bottom: 12px;
}

.admin-actions {
  display: flex;
  gap: 8px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

#admin-item-list .card-image {
  width: 44px;
  height: 44px;
  aspect-ratio: unset;
  border-radius: 8px;
}

.hidden {
  display: none;
}

.detail-modal {
  max-width: 900px;
}

.detail-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  flex: 1;
  overflow-y: auto;
}

.detail-image {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--image-bg);
  border-radius: 12px;
  min-height: 250px;
}

.detail-img {
  width: 100%;
  max-width: 100%;
  max-height: 250px;
  object-fit: contain;
}

.detail-info {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  min-height: 0;
}

.detail-value,
.detail-demand,
.detail-exist {
  font-size: 14px;
  color: var(--text);
}

.detail-value span,
.detail-demand span,
.detail-exist span {
  font-weight: 700;
  color: var(--accent);
}

.chart-filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 700;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

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

.filter-btn.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.detail-chart {
  flex: 1;
  min-height: 250px;
  width: 100%;
  max-height: 300px;
  display: block;
}

@media (max-width: 760px) {
  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .top-actions {
    justify-content: space-between;
    flex-wrap: wrap;
  }

  .picker-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .detail-content {
    grid-template-columns: 1fr;
  }
}