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

:root {
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text: #1a1a2e;
  --color-text-muted: #6b7280;
  --color-like: #10b981;
  --color-like-bg: #d1fae5;
  --color-dislike: #ef4444;
  --color-dislike-bg: #fee2e2;
  --color-accent: #6366f1;
  --color-accent-bg: rgba(99, 102, 241, 0.1);
  --color-border: #e5e7eb;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.1), 0 8px 32px rgba(0,0,0,0.06);
  --font: system-ui, -apple-system, 'Segoe UI', sans-serif;
  --transition: 0.2s ease;
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
}

:root { color-scheme: light; }

:root[data-theme="dark"] {
  color-scheme: dark;
  --color-bg: #111118;
  --color-surface: #1c1c27;
  --color-text: #e4e4e9;
  --color-text-muted: #8b8b9e;
  --color-like-bg: rgba(16, 185, 129, 0.15);
  --color-dislike-bg: rgba(239, 68, 68, 0.15);
  --color-accent: #818cf8;
  --color-accent-bg: rgba(129, 140, 248, 0.12);
  --color-border: #2a2a3a;
  --shadow: 0 1px 3px rgba(0,0,0,0.3), 0 4px 12px rgba(0,0,0,0.2);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.4), 0 8px 32px rgba(0,0,0,0.3);
}

html { font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

/* === Header === */
.header {
  padding: 0.75rem 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.theme-toggle {
  position: absolute;
  right: 0.75rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: 0.5rem;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: color var(--transition);
}

.theme-toggle:hover { color: var(--color-text); }

/* Show moon in light mode, sun in dark mode */
.theme-toggle__sun { display: none; }
:root[data-theme="dark"] .theme-toggle__moon { display: none; }
:root[data-theme="dark"] .theme-toggle__sun { display: block; }

.gender-toggle {
  display: inline-grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  background: var(--color-border);
  border-radius: var(--radius-sm);
  padding: 2px;
  position: relative;
}

/* Sliding pill indicator */
.gender-toggle::after {
  content: "";
  position: absolute;
  top: 2px;
  bottom: 2px;
  left: 2px;
  width: calc(50% - 2px);
  background: var(--color-surface);
  border-radius: 6px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 0;
}

.gender-toggle[data-active="girls"]::after {
  transform: translateX(100%);
}

.gender-toggle__btn {
  font: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.625rem 1.25rem;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color 0.2s var(--ease-out-quart);
  min-height: 44px;
  position: relative;
  z-index: 1;
}

.gender-toggle__btn--active {
  color: var(--color-text);
}

/* === Main === */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 1rem 1rem;
  max-width: 420px;
  margin: 0 auto;
  width: 100%;
}

/* === Card === */
.card-area {
  width: 100%;
  position: relative;
  touch-action: pan-y;
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  text-align: center;
  will-change: transform;
  transition: transform 0.3s ease, opacity 0.3s ease;
  user-select: none;
}

@keyframes cardEnter {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.card--entering {
  animation: cardEnter 0.25s var(--ease-out-quart) both;
}

.card__name {
  font-size: clamp(2.5rem, 12vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  padding: 0.5rem 0;
  line-height: 1.1;
  white-space: nowrap;
}

.card__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.stat {
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  position: relative;
}

.stat__value {
  font-size: 1.125rem;
  font-weight: 700;
}

.stat__label {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card__chart {
  width: 100%;
  height: 140px;
  margin-top: 0.75rem;
  display: block;
  touch-action: none;
}

/* === Action Buttons === */
.actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 1rem;
  width: 100%;
}

.actions__btn {
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), color var(--transition), transform 0.15s var(--ease-out-quart);
  font: inherit;
}

.actions__btn--dislike {
  width: 56px;
  height: 56px;
  background: var(--color-dislike-bg);
  color: var(--color-dislike);
}

.actions__btn--like {
  width: 56px;
  height: 56px;
  background: var(--color-like-bg);
  color: var(--color-like);
}

.actions__btn--undo {
  width: 44px;
  height: 44px;
  background: var(--color-border);
  color: var(--color-text-muted);
}

.actions__btn:disabled { opacity: 0.3; cursor: not-allowed; }

/* Desktop: hover fills the button */
@media (hover: hover) {
  .actions__btn--dislike:hover { background: var(--color-dislike); color: white; }
  .actions__btn--like:hover { background: var(--color-like); color: white; }
  .actions__btn--undo:hover:not(:disabled) { background: var(--color-text-muted); color: white; }
}

/* Touch: active fills + scales the button */
.actions__btn--dislike:active { background: var(--color-dislike); color: white; transform: scale(0.9); }
.actions__btn--like:active { background: var(--color-like); color: white; transform: scale(0.9); }
.actions__btn--undo:active:not(:disabled) { background: var(--color-text-muted); color: white; transform: scale(0.9); }

/* === Progress === */
.progress {
  width: 100%;
  height: 24px;
  background: var(--color-border);
  border-radius: 12px;
  margin-top: 1rem;
  position: relative;
  overflow: hidden;
}

.progress__fill {
  height: 100%;
  background: var(--color-accent);
  border-radius: 12px;
  transition: width 0.3s ease;
  width: 0%;
}

.progress__text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text);
  text-shadow:
    0 0 3px var(--color-bg),
    0 0 3px var(--color-bg),
    0 0 3px var(--color-bg);
}

/* === Filter FAB === */
.filter-fab {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: var(--color-accent);
  color: white;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: transform var(--transition);
}

.filter-fab:hover { transform: scale(1.08); }

/* === Filter Drawer === */
.drawer { display: none; }

.drawer[aria-hidden="false"] {
  display: block;
  position: fixed;
  inset: 0;
  z-index: 100;
}

.drawer__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.3);
  animation: fadeIn 0.2s var(--ease-out-quart);
}

.drawer__panel {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: min(360px, 85vw);
  background: var(--color-surface);
  overflow-y: auto;
  animation: slideIn 0.3s var(--ease-out-quart);
  box-shadow: var(--shadow-lg);
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideIn { from { transform: translateX(100%); } to { transform: translateX(0); } }

.drawer__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: var(--color-surface);
  z-index: 1;
}

.drawer__header h2 {
  font-size: 1.125rem;
  font-weight: 700;
}

.drawer__close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: 0.5rem;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: -0.25rem;
}

.drawer__body {
  padding: 1rem;
}

.drawer__body fieldset {
  border: none;
  margin-bottom: 1rem;
}

.drawer__body legend {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.filter-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.drawer__body label {
  display: flex;
  flex-direction: column;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  gap: 0.25rem;
}

.drawer__body input[type="text"],
.drawer__body input[type="number"] {
  font: inherit;
  font-size: 0.875rem;
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-bg);
  color: var(--color-text);
  width: 100%;
}

.drawer__body input::placeholder {
  color: var(--color-border);
  opacity: 1;
}

.drawer__body input[type="text"]:focus,
.drawer__body input[type="number"]:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-accent-bg);
}

label.checkbox {
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text);
  cursor: pointer;
  margin-bottom: 0.375rem;
}

label.checkbox input { width: auto; }

input[type="range"] {
  width: 100%;
  accent-color: var(--color-accent);
}

.range-value {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text);
}

.drawer__actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

/* === Buttons === */
.btn {
  font: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.75rem 1rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  min-height: 44px;
}

.btn--primary { background: var(--color-accent); color: white; }
.btn--primary:hover { opacity: 0.9; }
.btn--secondary { background: var(--color-border); color: var(--color-text); }
.btn--secondary:hover { opacity: 0.8; }
.btn--danger { background: var(--color-dislike-bg); color: var(--color-dislike); }
.btn--danger:hover { background: var(--color-dislike); color: white; }

/* === Liked Section === */
.liked-section {
  max-width: 420px;
  margin: 0 auto;
  width: 100%;
  padding: 1rem;
}

.liked-section h2 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.liked-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.liked-list li {
  background: var(--color-like-bg);
  color: var(--color-like);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.25rem 0.625rem;
  border-radius: 999px;
}

.liked-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

/* === Stat Tooltips === */
.stat__info {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.55rem;
  font-weight: 700;
  cursor: help;
  vertical-align: middle;
  margin-left: 2px;
  position: relative;
}

/* Enlarge touch target without changing visual size */
.stat__info::before {
  content: "";
  position: absolute;
  inset: -10px;
}

.stat__tooltip {
  display: none;
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-text);
  color: var(--color-surface);
  font-size: 0.7rem;
  font-weight: 400;
  line-height: 1.4;
  padding: 0.5rem 0.625rem;
  border-radius: 6px;
  width: max-content;
  max-width: min(200px, 80vw);
  z-index: 20;
  text-transform: none;
  letter-spacing: normal;
}

.stat__tooltip::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--color-text);
}

.stat:hover .stat__tooltip,
.stat__info:focus .stat__tooltip {
  display: block;
}

.stat__tooltip--visible { display: block; }

/* === Footer === */
.footer {
  text-align: center;
  padding: 1.5rem 1rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.footer a { color: var(--color-accent); text-decoration: none; }
.footer a:hover { text-decoration: underline; }

.footer__made-by {
  font-weight: 600;
  margin-top: 0.5rem;
}

.footer__about {
  max-width: 400px;
  margin: 0.5rem auto;
  text-align: left;
}

.footer__about summary {
  cursor: pointer;
  text-align: center;
  font-weight: 600;
  color: var(--color-accent);
  list-style: none;
}

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

.footer__about-body {
  margin-top: 0.75rem;
  padding: 0.75rem;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.footer__about-body p {
  margin-bottom: 0.5rem;
}

.footer__about-body p:last-child {
  margin-bottom: 0;
}

.footer__links {
  margin-top: 0.5rem;
}

/* === Shortcuts Dialog === */
.shortcuts-dialog {
  border: none;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 0;
  max-width: 320px;
  width: calc(100% - 2rem);
  background: var(--color-surface);
  color: var(--color-text);
}

.shortcuts-dialog::backdrop {
  background: rgba(0, 0, 0, 0.3);
}

.shortcuts-dialog__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1rem 0.75rem;
}

.shortcuts-dialog__header h2 {
  font-size: 1rem;
  font-weight: 700;
}

.shortcuts-dialog__close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: 0.5rem;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: -0.5rem -0.25rem -0.5rem 0;
}

.shortcuts-list {
  padding: 0 1rem 1rem;
}

.shortcut {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.375rem 0;
}

.shortcut dt {
  display: flex;
  gap: 0.25rem;
}

.shortcut dd {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  padding: 0.2rem 0.5rem;
  font-family: var(--font);
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  box-shadow: 0 1px 0 var(--color-border);
}

/* === Empty/Done states === */
.state-message {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--color-text-muted);
}

.state-message__text { font-size: 1rem; font-weight: 600; }

/* === Focus === */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.actions__btn:focus-visible {
  outline-offset: 3px;
}

.gender-toggle__btn:focus-visible {
  outline-offset: -2px;
}

/* === Reduced Motion === */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* === Desktop === */
@media (min-width: 768px) {
  .main { padding-top: 1rem; }

  .card__name { font-size: clamp(3rem, 14vw, 4.5rem); }

  /* Drawer is a sidebar, not an overlay */
  .drawer[aria-hidden="false"] {
    inset: auto;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 320px;
    z-index: 10;
  }

  .drawer__backdrop { display: none; }

  .drawer[aria-hidden="false"] .drawer__panel {
    position: static;
    width: 100%;
    height: 100%;
    animation: none;
    box-shadow: -1px 0 0 var(--color-border);
  }

  body.drawer-open { padding-right: 320px; }

  /* Hide FAB when sidebar is open */
  body.drawer-open .filter-fab { display: none; }
}