/* ============================================================
   Markov Wordsearch — Vibrant Edition
   ============================================================ */

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

:root {
  --gap: 0.75rem;

  /* Palette */
  --bg-0: #0b0d1a;
  --bg-1: #11142a;
  --bg-2: #181d3a;
  --surface: rgba(28, 33, 64, 0.55);
  --surface-strong: rgba(34, 40, 78, 0.85);
  --border: rgba(140, 160, 255, 0.14);
  --border-strong: rgba(140, 160, 255, 0.32);

  --text: #e8ecff;
  --text-dim: #a4abd6;
  --text-faint: #6f78a8;

  --accent: #7c5cff;
  --accent-2: #36d1ff;
  --accent-3: #ff5cae;
  --accent-grad: linear-gradient(135deg, #7c5cff 0%, #36d1ff 100%);
  --accent-grad-hot: linear-gradient(135deg, #ff5cae 0%, #ff9d5c 100%);

  --good: #38e8a0;
  --warn: #ffd166;

  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 10px 40px -12px rgba(0, 0, 0, 0.7);
  --shadow-glow: 0 0 0 1px var(--border-strong), 0 8px 32px -8px rgba(124, 92, 255, 0.45);

  --speed: 0.25s;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
}

/* ---------------------- Keyframes ---------------------- */
@keyframes bg-drift {
  0% {
    background-position:
      0% 0%,
      100% 100%,
      50% 50%;
  }

  50% {
    background-position:
      100% 50%,
      0% 50%,
      60% 40%;
  }

  100% {
    background-position:
      0% 0%,
      100% 100%,
      50% 50%;
  }
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(14px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pop-in {
  0% {
    opacity: 0;
    transform: scale(0.6);
  }

  60% {
    transform: scale(1.12);
  }

  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse-glow {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(255, 92, 174, 0.55);
  }

  50% {
    box-shadow: 0 0 0 7px rgba(255, 92, 174, 0);
  }
}

@keyframes found-burst {
  0% {
    transform: scale(0.55) rotate(-8deg);
  }

  55% {
    transform: scale(1.18) rotate(3deg);
  }

  100% {
    transform: scale(1) rotate(0);
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }

  100% {
    background-position: 200% 0;
  }
}

@keyframes float-soft {
  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-3px);
  }
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  margin: 0;
  padding: 1.25rem;
  min-height: 100vh;
  color: var(--text);
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 1.75rem;
  background:
    radial-gradient(900px 700px at 12% -5%, rgba(124, 92, 255, 0.22), transparent 60%),
    radial-gradient(800px 600px at 105% 110%, rgba(54, 209, 255, 0.18), transparent 60%),
    linear-gradient(160deg, var(--bg-0), var(--bg-1) 55%, var(--bg-2));
  background-size:
    200% 200%,
    200% 200%,
    100% 100%;
  animation: bg-drift 28s ease-in-out infinite;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 20% 30%, rgba(255, 255, 255, 0.25), transparent),
    radial-gradient(1px 1px at 70% 60%, rgba(255, 255, 255, 0.18), transparent),
    radial-gradient(1px 1px at 40% 80%, rgba(255, 255, 255, 0.15), transparent),
    radial-gradient(1px 1px at 90% 20%, rgba(255, 255, 255, 0.2), transparent);
  background-size:
    600px 600px,
    500px 500px,
    700px 700px,
    400px 400px;
  opacity: 0.5;
  z-index: 0;
}

aside,
main {
  position: relative;
  z-index: 1;
}

/* ---------------------- Sidebar ---------------------- */
aside {
  background: var(--surface);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  box-shadow: var(--shadow);
  height: fit-content;
  max-height: calc(100vh - 2.5rem);
  overflow-y: auto;
  animation: fade-up 0.5s var(--ease) both;
}

aside::-webkit-scrollbar {
  width: 9px;
}

aside::-webkit-scrollbar-track {
  background: transparent;
}

aside::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--accent), var(--accent-2));
  border-radius: 10px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

h1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 1.1rem;
  background: linear-gradient(135deg, #fff 0%, var(--accent-2) 55%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

h1::before {
  content: '';
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 7px;
  background: var(--accent-grad);
  box-shadow: 0 0 18px rgba(124, 92, 255, 0.7);
  -webkit-text-fill-color: initial;
  flex: none;
  animation: float-soft 4s ease-in-out infinite;
}

fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 1.1rem;
  padding: 0.5rem 1rem 1rem;
  background: rgba(255, 255, 255, 0.02);
  transition:
    border-color var(--speed) var(--ease),
    background var(--speed) var(--ease);
}

fieldset:hover {
  border-color: var(--border-strong);
  background: rgba(255, 255, 255, 0.04);
}

legend {
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0 0.55rem;
  color: var(--accent-2);
}

label {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-dim);
  margin: 0.6rem 0 0.25rem;
  letter-spacing: 0.01em;
}

input,
select,
textarea {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: inherit;
  background: rgba(10, 12, 28, 0.6);
  color: var(--text);
  transition:
    border-color var(--speed) var(--ease),
    box-shadow var(--speed) var(--ease),
    background var(--speed) var(--ease);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-faint);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(10, 12, 28, 0.85);
  box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.25);
}

input[type='file'] {
  padding: 0.4rem;
  font-size: 0.8rem;
  color: var(--text-dim);
  cursor: pointer;
}

input[type='file']::file-selector-button {
  margin-right: 0.6rem;
  padding: 0.35rem 0.7rem;
  border: 0;
  border-radius: 8px;
  background: var(--accent-grad);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: filter var(--speed) var(--ease);
}

input[type='file']::file-selector-button:hover {
  filter: brightness(1.15);
}

label > input[type='checkbox'] {
  width: auto;
  margin-right: 0.45rem;
  accent-color: var(--accent);
  transform: translateY(1px);
  cursor: pointer;
}

label:has(> input[type='checkbox']) {
  display: flex;
  align-items: center;
  cursor: pointer;
  color: var(--text);
}

textarea {
  resize: vertical;
  min-height: 5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  line-height: 1.5;
}

.row {
  display: flex;
  gap: 0.6rem;
}

.row > * {
  flex: 1;
}

/* ---------------------- Buttons ---------------------- */
button {
  position: relative;
  padding: 0.6rem 1rem;
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--accent-grad);
  color: #fff;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  overflow: hidden;
  transition:
    transform var(--speed) var(--ease),
    box-shadow var(--speed) var(--ease),
    filter var(--speed) var(--ease);
  box-shadow: 0 6px 18px -6px rgba(124, 92, 255, 0.6);
}

button::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    transparent 30%,
    rgba(255, 255, 255, 0.35) 50%,
    transparent 70%
  );
  transform: translateX(-120%);
  transition: transform 0.6s var(--ease);
}

button:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
  box-shadow: 0 12px 28px -8px rgba(124, 92, 255, 0.75);
}

button:hover::after {
  transform: translateX(120%);
}

button:active {
  transform: translateY(0) scale(0.98);
}

button.secondary {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-strong);
  box-shadow: none;
  color: var(--text);
}

button.secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 0 8px 20px -10px rgba(0, 0, 0, 0.6);
}

.actions {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
  margin-top: 0.75rem;
}

/* ---------------------- Mode tabs ---------------------- */
.mode-tabs {
  display: flex;
  gap: 0.3rem;
  margin-bottom: 1.3rem;
  padding: 0.3rem;
  background: rgba(10, 12, 28, 0.5);
  border: 1px solid var(--border);
  border-radius: 14px;
}

.mode-tab {
  flex: 1;
  background: transparent;
  box-shadow: none;
  color: var(--text-dim);
  font-size: 0.82rem;
  padding: 0.5rem;
  border-radius: 10px;
  transition:
    color var(--speed) var(--ease),
    background var(--speed) var(--ease);
}

.mode-tab::after {
  display: none;
}

.mode-tab:hover {
  transform: none;
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: none;
  filter: none;
}

.mode-tab.active {
  background: var(--accent-grad);
  color: #fff;
  box-shadow: 0 6px 18px -6px rgba(124, 92, 255, 0.7);
}

/* ---------------------- Status text ---------------------- */
#status,
#watch-status,
#play-status {
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-top: 0.7rem;
  min-height: 1.2em;
  padding: 0.5rem 0.7rem;
  background: rgba(10, 12, 28, 0.4);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  line-height: 1.5;
  word-break: break-word;
}

/* ---------------------- Main / grid area ---------------------- */
main {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  animation: fade-up 0.6s var(--ease) 0.1s both;
}

#grid {
  padding: 1.5rem;
  background: var(--surface);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
  height: -webkit-fill-available;
  /* Establish a container so the grid can measure available space */
  container-type: size;
  display: grid;
  place-items: center;
}

table.ws-grid {
  border-collapse: separate;
  border-spacing: 4px;
  /* Cells are sized explicitly via the --cell-size variable (computed in
      JS to fit the available container space), so the table sizes to its
      content. This keeps hex/triangular row offsets aligned, since a fixed
      square box would otherwise fight with the translated odd rows. */
  table-layout: fixed;
}

table.ws-grid td {
  width: var(--cell-size, 2rem);
  height: var(--cell-size, 2rem);
  min-width: var(--cell-size, 2rem);
  text-align: center;
  font-family: var(--cell-font-family, 'JetBrains Mono', monospace);
  font-size: var(--cell-font, 1rem);
  font-weight: 500;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.03);
  user-select: none;
  transition:
    transform 0.18s var(--ease),
    background 0.18s var(--ease),
    color 0.18s var(--ease),
    box-shadow 0.18s var(--ease);
}

table.ws-grid td:hover {
  transform: translateY(-2px) scale(1.06);
  background: rgba(124, 92, 255, 0.18);
  box-shadow: 0 6px 16px -6px rgba(124, 92, 255, 0.6);
  z-index: 2;
}

table.ws-grid td.locked {
  background: linear-gradient(135deg, rgba(255, 209, 102, 0.22), rgba(255, 157, 92, 0.14));
  border-color: rgba(255, 209, 102, 0.4);
  color: var(--warn);
}

table.ws-grid td.just-filled {
  background: var(--accent-grad);
  color: #fff;
  border-color: transparent;
  animation: pop-in 0.35s var(--ease);
  box-shadow: 0 0 18px rgba(54, 209, 255, 0.55);
}

/* ---------------------- Play mode grid ---------------------- */
table.ws-grid-play td {
  cursor: pointer;
}

table.ws-grid-play td:hover {
  transform: translateY(-2px) scale(1.1);
  background: rgba(255, 92, 174, 0.18);
  box-shadow: 0 6px 16px -6px rgba(255, 92, 174, 0.6);
}

table.ws-grid-play td.selecting {
  background: var(--accent-grad-hot);
  color: #fff;
  border-color: transparent;
  animation: pulse-glow 1.2s infinite;
}

table.ws-grid-play td.found-cell {
  background: linear-gradient(135deg, var(--good), #2bbf86);
  color: #042;
  font-weight: 700;
  border-color: transparent;
  box-shadow: 0 0 14px rgba(56, 232, 160, 0.5);
  animation: found-burst 0.4s var(--ease);
}

table.ws-grid-play td.found-cell:hover {
  transform: translateY(-2px) scale(1.06);
  background: linear-gradient(135deg, var(--good), #2bbf86);
}

/* ---------------------- Play word list ---------------------- */
#play-words {
  list-style: none;
  padding: 0;
  margin: 0.6rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

#play-words li {
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--border-strong);
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  transition: all var(--speed) var(--ease);
}

#play-words li:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

#play-words li.found {
  text-decoration: line-through;
  text-decoration-color: rgba(56, 232, 160, 0.8);
  background: linear-gradient(135deg, rgba(56, 232, 160, 0.25), rgba(43, 191, 134, 0.15));
  border-color: rgba(56, 232, 160, 0.5);
  color: var(--good);
  animation: pop-in 0.4s var(--ease);
}

#play-timer {
  font-family: 'JetBrains Mono', monospace;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 1.15rem;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

#panel-play fieldset > div:first-child {
  font-size: 0.95rem;
  color: var(--text-dim);
}

/* ---------------------- Hex / triangular offsets ---------------------- */
table.ws-lattice-hex tr.odd-row,
table.ws-lattice-triangular tr.odd-row {
  /* Half a cell (plus half the border-spacing) keeps the offset correct
      regardless of the computed cell size. */
  transform: translateX(calc((var(--cell-size, 2rem) + 4px) / 2));
}

table.ws-lattice-hex td,
table.ws-lattice-triangular td {
  border-radius: 50%;
}

/* ---------------------- Misc ---------------------- */
[hidden] {
  display: none !important;
}

#panel-design,
#panel-watch,
#panel-play {
  animation: fade-up 0.4s var(--ease) both;
}

p {
  font-size: 0.82rem;
  color: var(--text-faint);
  line-height: 1.5;
}

@media (max-width: 820px) {
  body {
    grid-template-columns: 1fr;
  }

  aside {
    max-height: none;
  }
}

/* ---------------------- Play-mode feedback FX ---------------------- */
@keyframes wrong-shake {
  0%,
  100% {
    transform: translateX(0);
  }

  20% {
    transform: translateX(-3px);
  }

  40% {
    transform: translateX(3px);
  }

  60% {
    transform: translateX(-2px);
  }

  80% {
    transform: translateX(2px);
  }
}

table.ws-grid-play td.wrong-flash {
  background: linear-gradient(135deg, #ff5c5c, #ff3b6b) !important;
  color: #fff !important;
  border-color: transparent !important;
  animation: wrong-shake 0.4s var(--ease);
}

#play-status.win {
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  border-left-color: var(--good);
  background: linear-gradient(135deg, rgba(56, 232, 160, 0.25), rgba(54, 209, 255, 0.18));
  background-size: 200% 100%;
  animation: shimmer 2.4s linear infinite;
}

/* Confetti burst */
#grid {
  position: relative;
  overflow: hidden;
}

.confetti-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 5;
}

.confetti {
  position: absolute;
  top: -12px;
  width: 9px;
  height: 14px;
  border-radius: 2px;
  opacity: 0.95;
  animation-name: confetti-fall;
  animation-timing-function: ease-in;
  animation-fill-mode: forwards;
}

@keyframes confetti-fall {
  0% {
    transform: translateY(-12px) rotate(0deg);
    opacity: 1;
  }

  100% {
    transform: translateY(620px) rotate(720deg);
    opacity: 0;
  }
}