@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,500;0,9..144,700;1,9..144,500&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@500;700&display=swap');

:root {
  --bg-a: #ffe6d6;
  --bg-b: #d7e4ff;
  --bg-c: #f5d5f2;
  --panel: rgba(255, 255, 255, 0.66);
  --panel-border: rgba(255, 255, 255, 0.9);
  --panel-shadow: 0 18px 40px -20px rgba(47, 25, 85, 0.3),
    0 2px 6px rgba(47, 25, 85, 0.08);
  --text: #1f1147;
  --muted: #6b5f8a;
  --border: rgba(31, 17, 71, 0.12);
  --divider: #1f1147;
  --cell: rgba(255, 255, 255, 0.85);
  --cell-border: rgba(31, 17, 71, 0.18);
  --cell-hover: rgba(255, 255, 255, 1);
  --filled-from: #5b2ea6;
  --filled-to: #1f1147;
  --filled-glow: rgba(168, 85, 247, 0.45);
  --cross: #e11d48;
  --clue-bg: rgba(255, 255, 255, 0.55);
  --clue-text: #1f1147;
  --accent: #ec4899;
  --accent-ink: #ffffff;
  --accent-soft: rgba(236, 72, 153, 0.15);
  --success: #0f766e;
  --font-display: 'Fraunces', 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
}

[data-theme='dark'] {
  --bg-a: #1a1333;
  --bg-b: #0f2540;
  --bg-c: #2a1142;
  --panel: rgba(28, 22, 54, 0.72);
  --panel-border: rgba(255, 255, 255, 0.08);
  --panel-shadow: 0 18px 40px -18px rgba(0, 0, 0, 0.6),
    0 2px 6px rgba(0, 0, 0, 0.3);
  --text: #f3e8ff;
  --muted: #a99cc9;
  --border: rgba(255, 255, 255, 0.1);
  --divider: #f3e8ff;
  --cell: rgba(255, 255, 255, 0.06);
  --cell-border: rgba(255, 255, 255, 0.12);
  --cell-hover: rgba(255, 255, 255, 0.12);
  --filled-from: #f472b6;
  --filled-to: #a855f7;
  --filled-glow: rgba(244, 114, 182, 0.55);
  --cross: #fb7185;
  --clue-bg: rgba(255, 255, 255, 0.04);
  --clue-text: #f3e8ff;
  --accent: #f472b6;
  --accent-ink: #1a1333;
  --accent-soft: rgba(244, 114, 182, 0.2);
  --success: #5eead4;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  background-color: var(--bg-a);
  background-image: radial-gradient(
      1200px 800px at 12% -10%,
      var(--bg-c) 0%,
      transparent 55%
    ),
    radial-gradient(900px 700px at 105% 15%, var(--bg-b) 0%, transparent 60%),
    radial-gradient(800px 600px at 50% 120%, var(--bg-c) 0%, transparent 60%);
  background-attachment: fixed;
  transition: background-color 0.3s ease, color 0.3s ease;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(rgba(31, 17, 71, 0.05) 1px, transparent 1px);
  background-size: 22px 22px;
  mix-blend-mode: multiply;
  opacity: 0.5;
  z-index: 0;
}

[data-theme='dark'] body::before {
  background-image:
    radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  mix-blend-mode: screen;
}

.app {
  position: relative;
  z-index: 1;
  max-width: 1160px;
  margin: 0 auto;
  padding: 28px 20px 48px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  position: relative;
  z-index: 20;
}

.toolbar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.toolbar__group {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 6px;
  padding: 6px 10px 6px 14px;
  border-radius: 999px;
  background: var(--panel);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  box-shadow: 0 6px 14px -8px rgba(31, 17, 71, 0.18);
  position: relative;
}

[data-theme='dark'] .toolbar__group {
  box-shadow: 0 6px 14px -8px rgba(0, 0, 0, 0.5);
}

.toolbar__group .btn,
.toolbar__group .cselect {
  border-color: transparent;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
}

.toolbar__group .btn:hover:not(:disabled),
.toolbar__group .cselect:hover,
.toolbar__group .cselect-wrap.is-open .cselect {
  background: var(--accent-soft);
  border-color: transparent;
}

.toolbar__label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
  font-weight: 700;
  padding-right: 8px;
  margin-right: 2px;
  border-right: 1px dashed var(--border);
  line-height: 1;
  white-space: nowrap;
}

.toolbar__label-icon {
  color: var(--accent);
  opacity: 0.8;
}

.title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 4.2vw, 3rem);
  line-height: 1.2;
  padding-bottom: 0.06em;
  letter-spacing: -0.02em;
  background: linear-gradient(
    135deg,
    var(--filled-from) 0%,
    var(--accent) 60%,
    var(--filled-to) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  position: relative;
}

.title::before { content: none; }

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

.brand__logo {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--filled-from), var(--filled-to));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 20px -10px var(--filled-glow),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
  flex-shrink: 0;
}

.brand__logo .icon {
  color: #fff;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-end;
}

.label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  font-weight: 600;
}

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--panel);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--text);
  padding: 9px 14px;
  font-size: 13.5px;
  font-family: inherit;
  font-weight: 500;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: transform 0.12s ease, box-shadow 0.18s ease,
    border-color 0.18s ease, background 0.18s ease, color 0.18s ease;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset,
    0 4px 12px -6px rgba(31, 17, 71, 0.18);
}

.btn .icon {
  color: var(--accent);
  transition: transform 0.18s ease;
}

.btn:hover .icon {
  transform: rotate(-6deg) scale(1.08);
}

[data-theme='dark'] .btn {
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05) inset,
    0 4px 12px -6px rgba(0, 0, 0, 0.4);
}

.btn__label {
  white-space: nowrap;
}

.btn--ghost {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
}

.btn--ghost:hover {
  background: var(--accent-soft);
  border-color: var(--accent-soft);
}

.btn:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset,
    0 8px 18px -8px var(--filled-glow);
}

.btn:active {
  transform: translateY(1px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset,
    0 2px 6px -2px rgba(31, 17, 71, 0.2);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--filled-from));
  color: var(--accent-ink);
  border-color: transparent;
}

.btn--icon {
  padding: 9px;
  min-width: 38px;
  justify-content: center;
  gap: 0;
}

.panel {
  background: var(--panel);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  box-shadow: var(--panel-shadow);
}

.statusbar {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-align: center;
  margin: 0 auto;
  padding: 18px 20px 14px;
  position: relative;
  overflow: hidden;
}

.timer {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 2.75rem);
  letter-spacing: 0.06em;
  padding: 6px 22px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent-soft), transparent);
  color: var(--text);
  font-variant-numeric: tabular-nums;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  position: relative;
  line-height: 1.1;
}

.timer::before {
  content: '';
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent);
  animation: pulse 1.6s ease-out infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 var(--accent-soft);
  }
  70% {
    box-shadow: 0 0 0 10px transparent;
  }
  100% {
    box-shadow: 0 0 0 0 transparent;
  }
}

.message {
  min-height: 1.4em;
  font-weight: 600;
  color: var(--accent);
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.05rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s ease-out, transform 0.2s ease-out;
}

.message--in {
  animation: message-rise 0.45s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes message-rise {
  0% {
    opacity: 0;
    transform: translateY(14px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: flex-start;
}



.board-wrap {
  display: flex;
  justify-content: center;
  overflow: hidden;
  padding: 6px;
}

.board {
  display: grid;
  user-select: none;
  --cell-size: 38px;
  padding: 14px;
  background: var(--panel);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--panel-shadow);
  position: relative;
}

.cell {
  width: var(--cell-size);
  height: var(--cell-size);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--cell-border);
  background: var(--cell);
  cursor: pointer;
  font-size: calc(var(--cell-size) * 0.5);
  line-height: 1;
  color: var(--cross);
  transition: box-shadow 0.12s ease, transform 0.05s ease;
  position: relative;
}

.cell:hover:not(.cell--clue):not(.cell--corner):not(.cell--filled):not(.cell--cross) {
  background: var(--cell-hover);
  box-shadow: 0 4px 12px -6px var(--filled-glow);
  z-index: 2;
}

.cell--filled:hover,
.cell--cross:hover {
  box-shadow: 0 4px 12px -6px var(--filled-glow);
  z-index: 2;
}

.cell--clue {
  background: var(--clue-bg);
  cursor: default;
  color: var(--clue-text);
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: calc(var(--cell-size) * 0.42);
}

.cell--corner {
  background: transparent;
  cursor: default;
  border: 1px solid transparent;
}

.cell--filled {
  background: linear-gradient(135deg, var(--filled-from), var(--filled-to));
  border-color: transparent;
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.25),
    0 4px 14px -4px var(--filled-glow);
}

.cell--filled:hover {
  transform: scale(0.97);
}

.cell--cross::after {
  content: '✕';
  font-weight: 700;
  transform: rotate(-6deg);
  display: inline-block;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.3);
}

.cell.div-right {
  border-right: 2px solid var(--divider);
}
.cell.div-bottom {
  border-bottom: 2px solid var(--divider);
}
.cell.div-left {
  border-left: 2px solid var(--divider);
}
.cell.div-top {
  border-top: 2px solid var(--divider);
}

/* Scores (inside modal) */
.scores {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  counter-reset: score;
}

.scores__item {
  display: grid;
  grid-template-columns: 36px 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: var(--accent-soft);
  border: 1px solid transparent;
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.scores__item:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
}

.scores__rank {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
}

.scores__rank--1 {
  background: linear-gradient(135deg, #fde68a, #f59e0b);
  color: #78350f;
  border-color: transparent;
  box-shadow: 0 4px 12px -4px rgba(245, 158, 11, 0.5);
}

.scores__rank--2 {
  background: linear-gradient(135deg, #e5e7eb, #9ca3af);
  color: #1f2937;
  border-color: transparent;
}

.scores__rank--3 {
  background: linear-gradient(135deg, #fed7aa, #c2410c);
  color: #431407;
  border-color: transparent;
}

.scores__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.scores__name {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1rem;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.scores__diff {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-weight: 600;
}

.scores__time {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent);
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
}

.scores__time .icon {
  opacity: 0.8;
}

.scores__empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 24px 12px;
  color: var(--muted);
  text-align: center;
}

.scores__empty-icon {
  opacity: 0.35;
  margin-bottom: 4px;
  color: var(--accent);
}

.scores__empty small {
  font-size: 12px;
  opacity: 0.75;
}

.solved .cell {
  pointer-events: none;
}

.solved {
  animation: celebrate 0.8s ease-out 1;
  transform-origin: center;
}

@keyframes celebrate {
  0% {
    transform: scale(1);
    box-shadow: var(--panel-shadow);
  }
  40% {
    transform: scale(1.025);
    box-shadow: var(--panel-shadow), 0 0 60px 0 var(--filled-glow);
  }
  100% {
    transform: scale(1);
    box-shadow: var(--panel-shadow);
  }
}

@media (max-width: 720px) {
  .board {
    --cell-size: 30px;
    padding: 10px;
  }
  .board[data-size='15'] {
    --cell-size: 24px;
    padding: 8px;
  }
  .app {
    padding: 20px 14px 36px;
  }
}

@media (max-width: 520px) {
  .board {
    --cell-size: 26px;
    padding: 8px;
  }
  .board[data-size='10'] {
    --cell-size: 22px;
  }
  .board[data-size='15'] {
    --cell-size: 18px;
    padding: 6px;
  }
  .btn {
    padding: 8px 11px;
    font-size: 12.5px;
  }
  .btn--icon {
    padding: 7px;
    min-width: 32px;
  }
}

@media (max-width: 440px) {
  .app {
    padding: 16px 10px 28px;
  }
  .board {
    --cell-size: 22px;
    padding: 6px;
  }
  .board[data-size='10'] {
    --cell-size: 20px;
  }
  .board[data-size='15'] {
    --cell-size: 16px;
    padding: 4px;
  }
  .panel {
    padding: 14px 12px;
  }
  .statusbar {
    padding: 14px 12px 12px;
  }
}

/* Icon base */
.icon {
  flex-shrink: 0;
  vertical-align: middle;
}

/* Custom select */
.cselect-wrap {
  position: relative;
  display: inline-block;
}

.cselect {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--panel);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--text);
  padding: 9px 14px;
  font-size: 13.5px;
  font-family: inherit;
  font-weight: 500;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-width: 120px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset,
    0 4px 12px -6px rgba(31, 17, 71, 0.18);
}

.cselect:hover,
.cselect:focus-visible,
.cselect-wrap.is-open .cselect {
  border-color: var(--accent);
  outline: none;
}

.cselect__icon {
  color: var(--accent);
}

.cselect__label {
  flex: 1;
  text-align: left;
  font-weight: 500;
}

.cselect__chev {
  color: var(--muted);
  transition: transform 0.18s ease;
}

.cselect-wrap.is-open .cselect__chev {
  transform: rotate(180deg);
  color: var(--accent);
}

.popover {
  position: fixed;
  min-width: 160px;
  overflow-y: auto;
  padding: 6px;
  background: var(--panel);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-md);
  box-shadow: 0 24px 48px -16px rgba(31, 17, 71, 0.35),
    0 4px 12px rgba(31, 17, 71, 0.12);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 2px;
  animation: popover-in 0.15s ease-out;
}

[data-theme='dark'] .popover {
  box-shadow: 0 24px 48px -16px rgba(0, 0, 0, 0.6),
    0 4px 12px rgba(0, 0, 0, 0.3);
}

.popover[hidden] {
  display: none;
}

@keyframes popover-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.popover__item {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--text);
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 500;
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  text-align: left;
  transition: background 0.15s ease, color 0.15s ease;
}

.popover__item:hover {
  background: var(--accent-soft);
}

.popover__item.is-selected {
  background: linear-gradient(135deg, var(--accent), var(--filled-from));
  color: var(--accent-ink);
}

.popover__item.is-selected .popover__item-check {
  color: var(--accent-ink);
}

.popover__item-label {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(31, 17, 71, 0.45);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  transition: opacity 0.18s ease;
  padding: 20px;
}

.modal-backdrop[hidden] {
  display: none;
}

.modal-backdrop.is-open {
  opacity: 1;
}

[data-theme='dark'] .modal-backdrop {
  background: rgba(0, 0, 0, 0.55);
}

.modal {
  width: min(480px, 100%);
  max-height: calc(100vh - 40px);
  display: flex;
  flex-direction: column;
  background: var(--panel);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 30px 60px -20px rgba(47, 25, 85, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset;
  overflow: hidden;
  transform: translateY(8px);
  transition: transform 0.22s cubic-bezier(0.2, 0.9, 0.3, 1.2);
}

.modal-backdrop.is-open .modal {
  transform: translateY(0);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 22px 10px;
  gap: 12px;
}

.modal__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  background: linear-gradient(135deg, var(--filled-from), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.modal__close {
  appearance: none;
  border: 0;
  background: var(--accent-soft);
  color: var(--text);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, transform 0.12s ease;
}

.modal__close:hover {
  background: var(--accent);
  color: var(--accent-ink);
  transform: rotate(90deg);
}

.modal__body {
  padding: 10px 22px 22px;
  overflow-y: auto;
}

/* Compact status on small screens */
@media (max-width: 720px) {
  .toolbar__label {
    display: none;
  }
  .toolbar__group {
    padding-left: 8px;
  }
  .brand__logo {
    width: 34px;
    height: 34px;
  }
  .cselect {
    min-width: 0;
    padding: 8px 11px;
    font-size: 12.5px;
  }
}

@media (max-width: 520px) {
  .btn__label {
    display: none;
  }
  .btn {
    padding: 8px;
    min-width: 34px;
    justify-content: center;
  }
  .cselect {
    padding: 7px 10px;
  }
  .scores__item {
    grid-template-columns: 30px 1fr auto;
    gap: 10px;
    padding: 10px;
  }
  .scores__rank {
    width: 30px;
    height: 30px;
    font-size: 0.85rem;
  }
}