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

:root {
  --bg: #eef2f7;
  --ink: #1b1b1b;
  --muted: #6c6c6c;
  --card: #ffffff;
  --accent: #2b5ea8;
  --accent-2: #6b8bb9;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  --panel: #ffffff;
  --border: #e6e2d8;
  --input: #ffffff;
  --tab-bg: #e7eff9;
  --tab-ink: #1e3552;
}

body.theme-dark {
  --bg: #13161b;
  --ink: #f4f4f4;
  --muted: #a1a1a1;
  --card: #15181d;
  --accent: #4e86d4;
  --accent-2: #8fb1e0;
  --shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
  --panel: #12151a;
  --border: #242a33;
  --input: #0f1216;
  --tab-bg: #1c2430;
  --tab-ink: #cdd9ea;
}

* { box-sizing: border-box; }

html, body {
  overflow-x: clip;
  overscroll-behavior-y: contain;
}

body {
  margin: 0;
  font-family: "Space Grotesk", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: radial-gradient(1200px 600px at 10% -10%, #e7f0ff, transparent),
              radial-gradient(900px 500px at 90% 10%, #dde7f2, transparent),
              var(--bg);
}

body.theme-dark {
  background: radial-gradient(1200px 600px at 10% -10%, rgba(45, 177, 165, 0.15), transparent),
              radial-gradient(900px 500px at 90% 10%, rgba(240, 180, 41, 0.12), transparent),
              var(--bg);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 20px 40px;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 0;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.brand h1 {
  font-weight: 700;
  font-size: 28px;
  margin: 0;
}

.badge {
  background: transparent;
  color: var(--muted);
  padding: 0;
  border-radius: 0;
  font-size: 14px;
  font-weight: 600;
}

.top-actions a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
}

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

.account-menu {
  position: relative;
}

.account-menu summary {
  list-style: none;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--input);
  color: var(--ink);
  border-radius: 999px;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.account-menu summary::-webkit-details-marker {
  display: none;
}

.account-menu-panel {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 180px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 40;
}

.account-menu-panel a,
.account-menu-panel button {
  display: block;
  width: 100%;
  border: 0;
  background: transparent;
  text-align: left;
  border-radius: 8px;
  padding: 8px 10px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
}

.account-menu-panel a:hover,
.account-menu-panel button:hover {
  background: var(--tab-bg);
}

.menu-icon {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 16px;
}

.menu-icon span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
}

.account-menu[open] .menu-icon span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.account-menu[open] .menu-icon span:nth-child(2) {
  opacity: 0;
}

.account-menu[open] .menu-icon span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.panel {
  background: transparent;
  border-radius: 0;
  box-shadow: none;
  padding: 0;
}

.collection-tabs-row {
  display: flex;
  align-items: flex-end;
  margin-bottom: 0;
  padding: 0 4px;
}

.collection-tabs {
  gap: 6px;
}

.collection-tabs .tab {
  border-radius: 12px 12px 0 0;
  padding: 10px 14px;
  border-bottom: none;
  background: var(--tab-bg);
}

.collection-tabs .tab.is-active {
  position: relative;
  z-index: 2;
  margin-bottom: -1px;
  background: var(--panel);
  color: var(--ink);
  border-color: var(--border);
  border-bottom-color: var(--panel);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.collection-pane {
  border: 1px solid var(--border);
  border-radius: 0 14px 14px 14px;
  background: var(--panel);
  padding: 14px;
}

.pull-indicator {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translate(-50%, -20px);
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  min-height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--panel);
  color: var(--muted);
  font-weight: 600;
  font-size: 12px;
  opacity: 0;
  transition: opacity 0.15s ease, transform 0.15s ease, color 0.15s ease;
  z-index: 2000;
  box-shadow: 0 6px 16px rgba(27, 45, 63, 0.12);
  pointer-events: none;
}

.pull-indicator.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.pull-indicator.is-ready {
  color: var(--accent);
}

.controls {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.solved-summary {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid #d4b13a;
  background: #ffe58a;
  color: #4d3a00;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.01em;
}

body.theme-dark .solved-summary {
  border-color: #a9861f;
  background: #59450b;
  color: #ffe39a;
}

.solved-inline {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

@media (min-width: 700px) {
  .controls {
    grid-template-columns: 1fr auto;
    align-items: center;
    column-gap: 16px;
  }
}

@media (max-width: 699px) {
  .controls {
    grid-template-columns: 1fr;
  }
  .controls-right {
    align-items: flex-start;
  }
  .solved-inline {
    justify-content: flex-start;
  }
  .filter,
  .toggle {
    justify-self: start;
  }
}

.controls-left {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
}

.controls-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}

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

.tab {
  border: 1px solid var(--border);
  background: var(--tab-bg);
  color: var(--tab-ink);
  padding: 8px 12px;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
}

.tab.is-active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.filter input {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  padding: 10px 12px;
  height: 40px;
  line-height: 20px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--input);
  color: var(--ink);
}

.filter input[type="date"] {
  -webkit-appearance: none;
  appearance: none;
}

.filter {
  width: min(220px, 100%);
  max-width: 220px;
  justify-self: start;
  position: relative;
}

.filter-button {
  border: 1px solid var(--border);
  background: var(--input);
  color: var(--ink);
  border-radius: 10px;
  padding: 6px 12px;
  height: 36px;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.filter-button:hover {
  border-color: var(--accent);
  box-shadow: 0 6px 16px rgba(27, 45, 63, 0.12);
}

.constraint-panel {
  width: min(520px, 92vw);
}

.fetch-panel {
  width: min(520px, 92vw);
}

.fetch-copy {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 14px;
}

.fetch-options {
  display: grid;
  gap: 10px;
}

.fetch-option {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  border: 1px solid var(--border);
  background: var(--input);
  border-radius: 14px;
  padding: 12px 14px;
  cursor: pointer;
}

.fetch-option input {
  margin-top: 3px;
}

.fetch-option span {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.fetch-option small {
  color: var(--muted);
  font-size: 12px;
}

.fetch-status {
  margin-top: 14px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--tab-bg);
  color: var(--tab-ink);
  font-size: 13px;
  font-weight: 600;
}

.fetch-status.is-success {
  border-color: #5ba06d;
  background: #e8f6ea;
  color: #22522f;
}

.fetch-status.is-error {
  border-color: #d48a8a;
  background: #fff1f1;
  color: #8a2525;
}

body.theme-dark .fetch-status.is-success {
  border-color: #4d8d5b;
  background: rgba(58, 113, 74, 0.35);
  color: #c8f2d2;
}

body.theme-dark .fetch-status.is-error {
  border-color: #9f5757;
  background: rgba(125, 44, 44, 0.3);
  color: #ffcccc;
}

.constraint-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-height: 50vh;
  overflow-y: auto;
  padding-right: 6px;
}

.constraint-chip {
  border: 1px solid var(--border);
  background: var(--tab-bg);
  color: var(--tab-ink);
  border-radius: 999px;
  padding: 6px 12px;
  font-weight: 600;
  font-size: 12px;
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.constraint-chip.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 8px 16px rgba(17, 31, 46, 0.18);
}

.filter-input-hidden {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  width: 100%;
  height: 100%;
}


.filter.is-hidden {
  visibility: hidden;
  pointer-events: none;
}

.toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--muted);
  justify-self: end;
}

.toggle-switcher {
  cursor: pointer;
  user-select: none;
}

.toggle-switcher input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.toggle-switcher .toggle-switch {
  background: #cfd6df;
}

.toggle-switcher input:checked + .toggle-label + .toggle-switch {
  background: var(--accent);
}

.toggle-switcher input:checked + .toggle-label + .toggle-switch::after {
  transform: translateX(18px);
}

.collection-select {
  border: 1px solid var(--border);
  background: var(--input);
  color: var(--ink);
  border-radius: 10px;
  padding: 6px 32px 6px 12px;
  height: 36px;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%),
                    linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 18px) calc(50% - 3px), calc(100% - 12px) calc(50% - 3px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

.order-button {
  border: 1px solid var(--border);
  background: var(--input);
  color: var(--ink);
  border-radius: 10px;
  padding: 6px 12px;
  height: 36px;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.order-button:hover {
  border-color: var(--accent);
  box-shadow: 0 6px 16px rgba(27, 45, 63, 0.12);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

@media (min-width: 720px) {
  .grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.card {
  background: var(--card);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  position: relative;
}

.card img {
  width: 100%;
  display: block;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

body.theme-dark .card img {
  filter: invert(1) brightness(0.9) contrast(0.9);
  opacity: 0.5;
  background: #2a3038;
}

.thumb {
  padding: 10px;
}

.card .meta {
  padding: 0 12px 12px;
  font-size: 13px;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.meta-sub {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-top: 2px;
}

.meta-left {
  font-size: 14px;
}

.meta-right {
  display: block;
  font-size: 12px;
  color: #4f5a66;
  text-align: right;
  align-self: flex-end;
  background: #eef1f4;
  border: 1px solid #dde3ea;
  border-radius: 8px;
  padding: 3px 8px;
}

.meta-right .solve-time-part {
  display: inline-block;
  margin-top: 1px;
  white-space: nowrap;
}

.status {
  position: absolute;
  top: 10px;
  right: 10px;
  background: #2f8f4e;
  color: #f6fff9;
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 999px;
}

.status.is-hidden {
  display: none;
}

.placeholder {
  padding: 40px 0;
  text-align: center;
  color: var(--muted);
}

.puzzle-link {
  display: block;
}

.viewer.hidden {
  display: none;
}

.viewer {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 50;
}

.viewer-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
}

.details-panel {
  position: relative;
  width: min(680px, 92vw);
  background: var(--panel);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 16px;
}

.details-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: flex-end;
  margin-bottom: 12px;
}

.details-open {
  background: var(--accent);
  color: #fff;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 10px 18px;
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 160px;
  box-shadow: 0 10px 20px rgba(17, 31, 46, 0.16);
  cursor: pointer;
}

.details-open.is-muted {
  background: var(--tab-bg);
  color: var(--tab-ink);
  border-color: var(--border);
  box-shadow: none;
}

.details-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.details-thumb img {
  width: 100%;
  display: block;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.details-meta {
  display: grid;
  grid-template-rows: 1fr auto;
  align-items: center;
  justify-items: center;
  text-align: center;
  gap: 10px;
  color: var(--muted);
  min-height: 220px;
}

.details-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.details-solved {
  font-size: 12px;
  color: var(--muted);
}

.solve-actions .details-open {
  background: var(--tab-bg);
  color: var(--tab-ink);
  border: 1px solid var(--border);
  font-size: 13px;
  height: 32px;
  padding: 6px 12px;
  min-width: 0;
  box-shadow: none;
}

.solve-panel {
  position: relative;
  width: min(420px, 92vw);
  background: var(--panel);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 18px;
}

.solve-header {
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 12px;
}

.solve-label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
  font-weight: 600;
}

.solve-hint {
  font-size: 12px;
  color: var(--muted);
  margin: -2px 0 10px;
}

.solve-input {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--input);
  color: var(--ink);
  margin-bottom: 12px;
}

.solve-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.details-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
}

.details-setter {
  font-size: 14px;
  color: var(--muted);
  font-weight: 400;
}

.details-constraints {
  margin-top: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  background: var(--panel);
}

.details-constraints-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 8px;
}

.details-constraints-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.details-constraint {
  border: 1px solid var(--border);
  background: var(--tab-bg);
  color: var(--tab-ink);
  border-radius: 999px;
  padding: 3px 8px;
  font-weight: 600;
  font-size: 11px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.details-qr {
  display: grid;
  gap: 8px;
  place-items: center;
}

.details-qr-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.details-qr-code {
  width: 92px;
  height: 92px;
  background: #fff;
  border-radius: 12px;
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  padding: 4px;
  box-sizing: border-box;
}

.details-qr-code img,
.details-qr-code canvas {
  width: 100%;
  height: 100%;
  display: block;
}

@media (max-width: 720px) {
  .details-body {
    grid-template-columns: 1fr;
  }
  .details-actions {
    justify-content: space-between;
    flex-wrap: wrap;
  }
}

.viewer-close,
.viewer-toggle {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 12px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 28px;
}

.viewer-toggle.is-solved {
  background: var(--accent);
  color: #fff;
}

.toggle-switch {
  position: relative;
  width: 40px;
  height: 22px;
  background: #cfd6df;
  border-radius: 999px;
  flex: 0 0 auto;
}

.toggle-switch::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.2s ease;
}

.viewer-toggle.is-solved .toggle-switch {
  background: rgba(255, 255, 255, 0.35);
}

.viewer-toggle.is-solved .toggle-switch::after {
  transform: translateX(18px);
}

.close-mark {
  font-size: 16px;
  line-height: 1;
}

.viewer-close .toggle-label,
.viewer-close .close-mark {
  pointer-events: none;
}

.solve-panel .viewer-close {
  position: static;
}

.is-hidden {
  display: none !important;
}