:root {
  --brand: #ff4d6d;
  --brand-2: #ff8e3c;
  --gradient: linear-gradient(135deg, var(--brand), var(--brand-2));
  --like: #1fbf75;
  --nope: #ff4d6d;
  --bg: #f6f5f8;
  --surface: #ffffff;
  --surface-2: #f0eef4;
  --text: #1d1b22;
  --muted: #6e6a78;
  --border: #e4e1ea;
  --shadow: 0 10px 30px rgba(30, 20, 50, 0.12);
  --radius: 18px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121116;
    --surface: #1c1a22;
    --surface-2: #26232e;
    --text: #f3f1f7;
    --muted: #a19cad;
    --border: #312d3b;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.45 system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

#app {
  max-width: 980px;
  margin: 0 auto;
  min-height: 100dvh;
  padding: 0 16px calc(24px + env(safe-area-inset-bottom));
}

a {
  color: var(--brand);
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0 0 0.5em;
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 0.875rem;
}

.center {
  text-align: center;
  padding: 48px 0;
}

.row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.spread {
  justify-content: space-between;
}

.stack > * + * {
  margin-top: 12px;
}

/* ---------- top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 10;
}

.topbar .title {
  flex: 1;
  min-width: 0;
  font-weight: 700;
  font-size: 1.15rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.35rem;
  text-decoration: none;
  color: var(--text);
  letter-spacing: -0.02em;
}

.logo img {
  width: 30px;
  height: 30px;
}

/* ---------- buttons & forms ---------- */

button,
.btn {
  font: inherit;
  border: 0;
  border-radius: 999px;
  padding: 10px 18px;
  background: var(--surface-2);
  color: var(--text);
  cursor: pointer;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: transform 0.1s, opacity 0.2s;
}

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

button:disabled {
  opacity: 0.5;
  cursor: default;
}

.primary {
  background: var(--gradient);
  color: #fff;
}

.danger {
  background: transparent;
  color: var(--nope);
  border: 1px solid currentColor;
}

.ghost {
  background: transparent;
}

.icon-btn {
  width: 40px;
  height: 40px;
  padding: 0;
  font-size: 1.2rem;
}

.block {
  width: 100%;
}

label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
}

label > input,
label > textarea,
label > select {
  margin-top: 6px;
}

input,
textarea,
select {
  font: inherit;
  width: 100%;
  padding: 11px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}

input:focus,
textarea:focus,
select:focus {
  outline: 2px solid var(--brand);
  outline-offset: -1px;
}

input[type='checkbox'] {
  width: 20px;
  height: 20px;
  accent-color: var(--brand);
  margin: 0;
}

textarea {
  min-height: 80px;
  resize: vertical;
}

.check {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
}

.grid-2 {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- cards & lists ---------- */

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

.auth {
  max-width: 400px;
  margin: 8vh auto 0;
}

.auth .logo {
  justify-content: center;
  width: 100%;
  margin-bottom: 18px;
  font-size: 2rem;
}

.list {
  display: grid;
  gap: 14px;
}

.collection-card {
  display: block;
  text-decoration: none;
  color: inherit;
}

.collection-card h3 {
  margin-bottom: 4px;
}

.progress {
  height: 8px;
  background: var(--surface-2);
  border-radius: 999px;
  overflow: hidden;
  margin: 12px 0 8px;
}

.progress > span {
  display: block;
  height: 100%;
  background: var(--gradient);
  border-radius: inherit;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--muted);
  white-space: nowrap;
}

.badge.open {
  background: rgba(31, 191, 117, 0.15);
  color: var(--like);
}

.badge.closed {
  background: rgba(255, 77, 109, 0.12);
  color: var(--nope);
}

.badge.hot {
  background: var(--gradient);
  color: #fff;
}

.tabs {
  display: flex;
  background: var(--surface-2);
  border-radius: 999px;
  padding: 4px;
  margin-bottom: 16px;
}

.tabs button {
  flex: 1;
  background: transparent;
  padding: 8px 12px;
  color: var(--muted);
}

.tabs button.active {
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.section {
  margin-top: 24px;
}

.item-row {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.item-row:last-child {
  border-bottom: 0;
}

.item-row .grow {
  flex: 1;
  min-width: 0;
}

.item-row .name {
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.thumb {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  object-fit: cover;
  flex: none;
  background: var(--gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.3rem;
}

.empty {
  text-align: center;
  padding: 40px 16px;
  color: var(--muted);
}

.empty .big {
  font-size: 3rem;
}

/* ---------- swipe deck ---------- */

.deck-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 420px;
  margin: 0 auto;
}

.deck {
  position: relative;
  width: 100%;
  height: min(62dvh, 560px);
  min-height: 360px;
}

.swipe-card {
  position: absolute;
  inset: 0;
  border-radius: 22px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow);
  touch-action: none;
  user-select: none;
  cursor: grab;
  will-change: transform;
  transition: transform 0.25s ease;
}

.swipe-card:active {
  cursor: grabbing;
}

.swipe-card img,
.swipe-card .placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  display: block;
}

.swipe-card .placeholder {
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.9);
  font-size: 7rem;
  font-weight: 800;
}

.swipe-card .info {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 60px 20px 20px;
  color: #fff;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
}

.swipe-card .info h2 {
  margin: 0 0 4px;
  font-size: 1.6rem;
}

.swipe-card .info p {
  margin: 0;
  opacity: 0.9;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.swipe-card .info .badge {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  margin-bottom: 8px;
}

.stamp {
  position: absolute;
  top: 28px;
  padding: 6px 14px;
  border: 4px solid currentColor;
  border-radius: 10px;
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  opacity: 0;
  pointer-events: none;
}

.stamp.like {
  left: 22px;
  color: var(--like);
  transform: rotate(-14deg);
}

.stamp.nope {
  right: 22px;
  color: var(--nope);
  transform: rotate(14deg);
}

.swipe-actions {
  display: flex;
  gap: 22px;
  align-items: center;
  justify-content: center;
  margin-top: 22px;
}

.swipe-actions button {
  border-radius: 50%;
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 0;
}

.swipe-actions .big {
  width: 70px;
  height: 70px;
  font-size: 2rem;
}

.swipe-actions .small-btn {
  width: 48px;
  height: 48px;
  font-size: 1.2rem;
  color: var(--muted);
}

.swipe-actions .nope-btn {
  color: var(--nope);
}

.swipe-actions .like-btn {
  color: var(--like);
}

.hint {
  margin-top: 12px;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
}

.choice-toggle {
  display: flex;
  gap: 4px;
}

.choice-toggle button {
  padding: 6px 12px;
  font-size: 0.85rem;
}

.choice-toggle .on.like {
  background: var(--like);
  color: #fff;
}

.choice-toggle .on.pass {
  background: var(--nope);
  color: #fff;
}

/* ---------- admin ---------- */

.items-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}

.item-tile {
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}

.item-tile .img {
  aspect-ratio: 4 / 3;
  width: 100%;
  object-fit: cover;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 3rem;
  font-weight: 800;
}

.item-tile .body {
  padding: 12px 14px 14px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat {
  font-size: 0.85rem;
  color: var(--muted);
}

.stat b {
  color: var(--text);
}

dialog {
  border: 0;
  border-radius: var(--radius);
  padding: 22px;
  width: min(520px, calc(100vw - 32px));
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
}

dialog::backdrop {
  background: rgba(10, 5, 20, 0.5);
}

.invite-link {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8rem;
  word-break: break-all;
  background: var(--surface-2);
  padding: 8px 10px;
  border-radius: 10px;
}

/* ---------- toasts ---------- */

#toasts {
  position: fixed;
  left: 50%;
  bottom: calc(20px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  display: grid;
  gap: 8px;
  z-index: 100;
  width: min(420px, calc(100vw - 32px));
}

.toast {
  background: #1d1b22;
  color: #fff;
  padding: 12px 16px;
  border-radius: 14px;
  box-shadow: var(--shadow);
  animation: toast-in 0.2s ease-out;
}

.toast.error {
  background: var(--nope);
}

@keyframes toast-in {
  from {
    transform: translateY(10px);
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .swipe-card,
  .toast {
    transition: none;
    animation: none;
  }
}