@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700;800&family=JetBrains+Mono:wght@500;600&display=swap');

* { box-sizing: border-box; }

:root {
  --color-1: #211747;
  --color-2: #FFF;
  --color-3: #15CFC9;
  --color-4: #211747;
  --color-5: #090502;

  --bg: var(--color-1);
  --bg-glow-1: #3a2680;
  --bg-glow-2: #1a1140;
  --panel: #241454;
  --panel-border: #382a6e;
  --tile-border: #332a5c;
  --tile-fill: #332a5c;
  --accent: var(--color-3);
  --accent-hover: #6fe8dc;
  --accent-soft: rgba(21, 207, 201, 0.12);
  --accent-2: #a78bfa;
  --coral: #ff8fa3;
  --text: var(--color-2);
  --text-dim: #b3a9dd;
  --text-dimmer: #8177ad;

  --lb-card: #1b1440;
  --lb-card-border: #322a63;
  --lb-ink-dim: #9c93c4;
  --lb-gold: #f6c667;

  --shadow-glow: 0 0 0 1px rgba(21, 207, 201, 0.08), 0 20px 60px -20px rgba(21, 207, 201, 0.25);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

html, body {
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
  background:
    radial-gradient(ellipse 900px 600px at 15% -10%, var(--bg-glow-1) 0%, transparent 60%),
    radial-gradient(ellipse 700px 500px at 110% 10%, rgba(21, 207, 201, 0.16) 0%, transparent 55%),
    radial-gradient(ellipse 800px 700px at 50% 120%, var(--bg-glow-2) 0%, transparent 60%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  margin: 0;
  min-height: 100vh;
}

a { color: var(--accent); transition: color 0.2s var(--ease); }
a:hover { color: var(--accent-hover); }

.app {
  min-height: 100vh;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.screen {
  width: 100%;
  display: flex;
  justify-content: center;
}

.hidden { display: none !important; }

.col {
  display: flex;
  flex-direction: column;
}

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

.row-between {
  width: 100%;
  justify-content: space-between;
}

.col-narrow {
  width: 100%;
  max-width: 420px;
  padding: 80px 24px;
  align-items: center;
  gap: 40px;
}

.col-wide {
  width: 100%;
  max-width: 520px;
  padding: 32px 16px 48px;
  align-items: center;
}

/* Wordmark */
.wordmark {
  display: flex;
  align-items: center;
  gap: 2px;
}

#logo {
  height: 32px;
  filter: drop-shadow(0 4px 16px rgba(21, 207, 201, 0.35));
}

/* Titles */
.title-block {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.game-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  font-size: 36px;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text) 40%, var(--accent) 130%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.game-title-sm {
  font-size: 28px;
}

.game-subtitle {
  font-size: 15px;
  color: var(--text-dim);
}

.day-label {
  display: inline-flex;
  align-self: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-top: 6px;
  padding: 5px 12px;
  background: var(--accent-soft);
  border: 1px solid rgba(21, 207, 201, 0.3);
  border-radius: 20px;
}

.timer {
  display: inline-flex;
  align-self: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text-dim);
  letter-spacing: 0.04em;
  margin-top: 6px;
  padding: 5px 12px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 20px;
}

.player-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-dim);
}

/* Inputs & buttons */
input {
  width: 100%;
  box-sizing: border-box;
  padding: 16px 18px;
  font-size: 18px;
  font-weight: 600;
  font-family: inherit;
  color: var(--text);
  background: var(--panel);
  border: 2px solid var(--panel-border);
  border-radius: 10px;
  outline: none;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

input::placeholder {
  color: var(--text-dimmer);
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

#guess-form input {
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.3rem;
  font-size: 1.4rem;
  font-family: 'JetBrains Mono', monospace;
  flex: 1;
}

button {
  font-family: inherit;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.15s var(--ease), box-shadow 0.2s var(--ease), background 0.2s var(--ease), opacity 0.2s var(--ease);
}

.btn-primary {
  padding: 16px;
  font-size: 18px;
  font-weight: 800;
  color: var(--color-1);
  background: linear-gradient(135deg, var(--accent), #21e0d3);
  box-shadow: 0 8px 24px -8px rgba(21, 207, 201, 0.55);
  width: 100%;
}

#guess-form .btn-primary {
  width: auto;
  padding: 16px 22px;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-hover), var(--accent));
  box-shadow: 0 10px 28px -8px rgba(21, 207, 201, 0.7);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 14px -6px rgba(21, 207, 201, 0.55);
}

.btn-primary:disabled {
  background: var(--panel-border);
  box-shadow: none;
  opacity: 0.6;
  cursor: default;
  transform: none;
}

.btn-outline {
  padding: 12px 22px;
  font-size: 15px;
  font-weight: 800;
  color: var(--text);
  background: transparent;
  border: 2px solid var(--panel-border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.link {
  text-align: center;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  position: relative;
}

.link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -2px;
  height: 1px;
  background: currentColor;
  transition: right 0.2s var(--ease);
}

.link:hover::after {
  right: 0;
}

/* Word ladder chain */
#chain {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.chain-row {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.tile {
  width: 58px;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 26px;
  font-weight: 700;
  background: var(--tile-fill);
  color: var(--text-dimmer);
  border: 2px solid var(--tile-border);
  border-radius: 8px;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.tile.match {
  background: linear-gradient(150deg, rgba(21, 207, 201, 0.28), rgba(21, 207, 201, 0.12));
  color: var(--text);
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(21, 207, 201, 0.12), 0 4px 14px -6px rgba(21, 207, 201, 0.4);
}

.tile.win {
  background: linear-gradient(150deg, var(--accent-hover), var(--accent));
  color: var(--color-1);
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(21, 207, 201, 0.2), 0 6px 20px -6px rgba(21, 207, 201, 0.7);
}

#message {
  min-height: 1.4rem;
  font-size: 14px;
  font-weight: 600;
  color: var(--coral);
  text-align: center;
}

.hint {
  font-size: 13px;
  color: var(--text-dimmer);
  margin-top: 16px;
}

.result-text {
  font-weight: 800;
  font-size: 22px;
  color: var(--accent);
  text-align: center;
  text-shadow: 0 0 24px rgba(21, 207, 201, 0.5);
}

#done-panel .btn-primary {
  width: auto;
  padding: 14px 32px;
}

/* Leaderboard */
#leaderboard-screen .col-narrow {
  padding: 64px 24px;
  align-items: stretch;
  gap: 8px;
}

.leaderboard-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  font-size: 40px;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--text) 40%, var(--accent) 140%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.leaderboard-sub {
  font-size: 14px;
  color: var(--lb-ink-dim);
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.leaderboard-sub .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

#leaderboard-list {
  list-style: none;
  padding: 0;
  margin: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.leaderboard-row {
  position: relative;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 18px 22px;
  background: var(--lb-card);
  border: 1px solid var(--lb-card-border);
  border-radius: 14px;
  overflow: hidden;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.leaderboard-row:hover {
  transform: translateY(-2px);
  border-color: rgba(21, 207, 201, 0.35);
}

.leaderboard-row.first {
  background: linear-gradient(120deg, rgba(21, 207, 201, 0.16), var(--lb-card) 55%);
  border-color: rgba(21, 207, 201, 0.45);
  box-shadow: var(--shadow-glow);
}

.leaderboard-rank {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  font-size: 15px;
  color: var(--lb-ink-dim);
  width: 30px;
  text-align: center;
  border-right: 1px solid var(--lb-card-border);
  padding-right: 16px;
}

.leaderboard-row.first .leaderboard-rank {
  color: var(--lb-gold);
  font-size: 16px;
  border-right-color: rgba(21, 207, 201, 0.3);
}

.leaderboard-name {
  flex: 1;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--text);
}

.leaderboard-row.first .leaderboard-name {
  font-size: 18px;
}

.leaderboard-badge {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-5);
  background: linear-gradient(135deg, var(--accent-hover), var(--accent));
  padding: 3px 8px;
  border-radius: 20px;
  margin-left: 10px;
  box-shadow: 0 2px 8px -2px rgba(21, 207, 201, 0.6);
}

.leaderboard-result {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  font-size: 16px;
  color: var(--lb-ink-dim);
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

.leaderboard-row.first .leaderboard-result {
  color: var(--accent);
  font-size: 17px;
}

.leaderboard-bar-track {
  position: absolute;
  left: 66px;
  right: 22px;
  bottom: 8px;
  height: 3px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 3px;
  overflow: hidden;
}

.leaderboard-bar-fill {
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), #7c6ff0);
}

.empty-state {
  text-align: center;
  color: var(--text-dimmer);
  font-size: 15px;
  padding: 24px 0;
  width: 100%;
}