*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:       #08041a;
  --surface:  #130b30;
  --panel:    #1c1248;
  --border:   #3a2478;
  --accent:   #7c3aed;
  --accent2:  #a78bfa;
  --text:     #f0ebff;
  --muted:    #8b7cb6;
  --gold:     #f59e0b;
  --gold2:    #fbbf24;
  --red:      #ff2d55;
  --blue:     #0a84ff;
  --green:    #06d6a0;
  --yellow:   #ffd60a;
  /* current palette colors — updated by JS when color scheme changes */
  --pal-1:    #ff2d55;
  --pal-2:    #0a84ff;
  --pal-3:    #06d6a0;
  --pal-4:    #ffd60a;
}

body {
  background: var(--bg);
  background-image: radial-gradient(ellipse 120% 60% at 50% -5%, #2a0d5e 0%, transparent 65%);
  color: var(--text);
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* ── Header ── */
header {
  background: linear-gradient(180deg, #1f1050 0%, #130b30 100%);
  border-bottom: 2px solid rgba(124,58,237,0.35);
  box-shadow: 0 4px 24px rgba(0,0,0,0.6), 0 1px 0 rgba(167,139,250,0.1);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  flex-shrink: 0;
}

h1 {
  font-size: 1.4rem;
  font-weight: 900;
  letter-spacing: 4px;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--pal-1), var(--pal-2), var(--pal-3), var(--pal-4), var(--pal-1));
  background-size: 400px 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: logo-scroll 2s linear infinite;
  flex-shrink: 0;
  user-select: none;
  filter: drop-shadow(0 0 10px rgba(167,139,250,0.35));
}

nav {
  display: flex;
  gap: 5px;
  flex-wrap: nowrap;
  overflow: visible;
  padding-bottom: 2px;
}

#play-menu { position: relative; }

#play-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.7), 0 0 0 1px rgba(124,58,237,0.15);
  z-index: 500;
  min-width: 152px;
  overflow: hidden;
  padding: 5px;
}
#play-dropdown.open { display: block; }

.play-item {
  display: block;
  width: 100%;
  background: transparent;
  color: var(--text);
  border: none;
  padding: 9px 14px;
  text-align: left;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 11px;
  transition: background 0.12s, transform 0.1s;
}
.play-item:hover { background: var(--accent); color: #fff; transform: translateX(3px); }

.mode-btn {
  background: rgba(124,58,237,0.1);
  color: var(--muted);
  border: 1px solid rgba(124,58,237,0.28);
  padding: 7px 16px;
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 700;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  white-space: nowrap;
}
.mode-btn:hover {
  color: var(--text);
  border-color: var(--accent2);
  background: rgba(124,58,237,0.22);
  transform: scale(1.05);
}
.mode-btn.active {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(124,58,237,0.45);
}

#player-info {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--muted);
  flex-shrink: 0;
  margin-left: auto;
}

#header-username { display: flex; align-items: center; gap: 6px; flex-shrink: 0; cursor: pointer; }
#header-username:hover #player-name { text-decoration: underline; text-decoration-color: rgba(255,255,255,0.4); }
#header-gear { font-size: 0.85rem; color: var(--muted); opacity: 0.7; transition: opacity 0.15s; }
#header-username:hover #header-gear { opacity: 1; }

#player-name { font-size: 1rem; font-weight: 700; color: var(--text); }

#btn-feedback {
  background: rgba(124,58,237,0.12);
  border: 1px solid rgba(124,58,237,0.35);
  color: var(--accent2);
  padding: 6px 13px;
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 700;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}
#btn-feedback:hover {
  background: var(--accent);
  color: #fff;
  transform: scale(1.06);
  box-shadow: 0 4px 16px rgba(124,58,237,0.45);
}

/* ── Main layout ── */
main {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 16px;
  gap: 24px;
  min-height: 0;
  overflow-y: auto;
}

/* ── Game area ── */
#game-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  position: relative;
  flex-shrink: 0;
}

/* ── Board ── */
#board-wrap {
  width: min(calc(100vw - 32px), calc(100dvh - 250px));
  aspect-ratio: 1;
  border-radius: 18px;
  overflow: hidden;
  box-shadow:
    0 0 0 3px rgba(124,58,237,0.5),
    0 0 0 6px rgba(124,58,237,0.1),
    0 0 40px rgba(124,58,237,0.28),
    0 24px 64px rgba(0,0,0,0.85);
  flex-shrink: 0;
  background: #060414;
}

canvas#board {
  width: 100%;
  height: 100%;
  display: block;
}

/* ── Stats ── */
#stats {
  display: flex;
  gap: 22px;
  font-size: 0.85rem;
  color: var(--muted);
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}
#stats strong {
  color: var(--gold2);
  font-size: 1rem;
  font-weight: 800;
  text-shadow: 0 0 12px rgba(251,191,36,0.45);
}
#seed-display { font-size: 0.78rem; color: var(--muted); }

/* ── Controls ── */
:root {
  --btn-sz:     max(44px, 6vmin);
  --btn-rot-sz: max(50px, 6.8vmin);
}

#controls {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100vw - 32px), calc(100dvh - 250px));
  max-width: 100%;
}

#dpad { display: flex; flex-direction: column; align-items: center; gap: max(4px, 0.46vmin); order: 1; }
#controls.swapped #dpad { order: 2; }

.dpad-row { display: flex; gap: max(4px, 0.46vmin); align-items: center; }
.dpad-gap  { width: var(--btn-sz); height: var(--btn-sz); }

#rotate-btns { display: flex; flex-direction: row; gap: max(8px, 0.93vmin); align-items: center; order: 2; }
#controls.swapped #rotate-btns { order: 1; }

#controls button {
  width: var(--btn-sz);
  height: var(--btn-sz);
  background: linear-gradient(180deg, #2e1c60 0%, #1d1044 100%);
  border: 2px solid rgba(124,58,237,0.45);
  border-bottom-color: rgba(60,20,120,0.9);
  color: var(--text);
  font-size: max(1rem, 1.9vmin);
  border-radius: 15px;
  cursor: pointer;
  touch-action: manipulation;
  transition: transform 0.12s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.1s;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
  -webkit-user-select: none;
  box-shadow: 0 6px 0 #0e0626, 0 8px 22px rgba(0,0,0,0.55), inset 0 1px 0 rgba(255,255,255,0.12);
}
#controls button:hover {
  background: linear-gradient(180deg, #3e2878 0%, #2a1a5e 100%);
  border-color: var(--accent2);
  transform: scale(1.08) translateY(-2px);
  box-shadow: 0 8px 0 #0e0626, 0 14px 28px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.16);
}
#controls button:active {
  transform: scale(0.95) translateY(5px);
  box-shadow: 0 2px 0 #0e0626, 0 3px 10px rgba(0,0,0,0.45), inset 0 1px 0 rgba(255,255,255,0.08);
}

#btn-cw, #btn-ccw {
  font-size: max(1.6rem, 2.8vmin);
  width: var(--btn-rot-sz);
  height: var(--btn-rot-sz);
  background: linear-gradient(180deg, var(--gold2) 0%, var(--gold) 60%);
  color: #1a0800;
  border: 2px solid rgba(255,255,255,0.35);
  border-bottom-color: #7c3400;
  border-radius: 18px;
  box-shadow: 0 6px 0 #7c3400, 0 10px 26px rgba(245,158,11,0.38), inset 0 1px 0 rgba(255,255,255,0.5);
}
#btn-cw:hover, #btn-ccw:hover {
  background: linear-gradient(180deg, #fde68a 0%, var(--gold2) 100%);
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 8px 0 #7c3400, 0 14px 32px rgba(245,158,11,0.52), inset 0 1px 0 rgba(255,255,255,0.6);
}
#btn-cw:active, #btn-ccw:active {
  transform: scale(0.95) translateY(5px);
  box-shadow: 0 2px 0 #7c3400, 0 4px 14px rgba(245,158,11,0.32), inset 0 1px 0 rgba(255,255,255,0.35);
}

/* ── Mode controls ── */
#mode-controls { display: flex; gap: 8px; align-items: center; }

#btn-new-game {
  padding: 8px 22px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  border: none;
  color: #fff;
  border-radius: 50px;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.88rem;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 4px 16px rgba(124,58,237,0.38);
}
#btn-new-game:hover {
  transform: scale(1.06) translateY(-1px);
  box-shadow: 0 6px 22px rgba(124,58,237,0.52);
}

#seed-input {
  padding: 7px 13px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 50px;
  width: 140px;
  font-size: 0.85rem;
}
#seed-input:focus { outline: none; border-color: var(--accent2); box-shadow: 0 0 0 3px rgba(124,58,237,0.2); }

/* ── Replay controls ── */
#replay-controls {
  display: none;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--muted);
}

#btn-stop-replay {
  padding: 6px 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 50px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.15s;
}
#btn-stop-replay:hover { background: var(--red); border-color: var(--red); color: #fff; }

/* ── Multiplayer overlay ── */
#mp-overlay {
  display: none;
  position: absolute;
  inset: 0;
  background: rgba(4, 2, 16, 0.92);
  backdrop-filter: blur(10px);
  z-index: 10;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  border-radius: 18px;
}

#mp-status {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text);
  text-align: center;
  padding: 0 16px;
}

#mp-players {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  font-size: 0.88rem;
  padding: 0 16px;
}

#btn-mp-ready {
  display: none;
  font-size: 1.05rem;
  padding: 13px 42px;
  background: linear-gradient(180deg, #22d67a 0%, #10b359 100%);
  border: 2px solid rgba(255,255,255,0.3);
  border-bottom-color: #065f35;
  color: #fff;
  border-radius: 50px;
  cursor: pointer;
  font-weight: 800;
  box-shadow: 0 6px 0 #065f35, 0 10px 26px rgba(6,214,122,0.32);
  transition: transform 0.12s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.1s;
}
#btn-mp-ready:hover {
  transform: scale(1.06) translateY(-1px);
  box-shadow: 0 8px 0 #065f35, 0 14px 32px rgba(6,214,122,0.45);
}
#btn-mp-ready:active {
  transform: scale(0.97) translateY(4px);
  box-shadow: 0 2px 0 #065f35, 0 4px 14px rgba(6,214,122,0.2);
}
#btn-mp-ready:disabled { opacity: 0.5; cursor: default; transform: none; box-shadow: none; }

#btn-mp-leave {
  font-size: 0.82rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 7px 18px;
  border-radius: 50px;
  cursor: pointer;
  font-weight: 600;
  transition: color 0.15s, border-color 0.15s;
}
#btn-mp-leave:hover { color: var(--text); border-color: var(--muted); }

/* ── Lobby actions ── */
#mp-lobby-actions { display: flex; flex-direction: column; align-items: center; gap: 12px; }

#btn-mp-create {
  font-size: 1rem;
  padding: 12px 38px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  border: none;
  color: #fff;
  border-radius: 50px;
  cursor: pointer;
  font-weight: 800;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 4px 20px rgba(124,58,237,0.42);
}
#btn-mp-create:hover {
  transform: scale(1.06) translateY(-1px);
  box-shadow: 0 6px 26px rgba(124,58,237,0.58);
}

#mp-join-row { display: flex; gap: 8px; align-items: center; }

#mp-code-input {
  padding: 9px 15px;
  background: var(--panel);
  border: 2px solid var(--border);
  color: var(--text);
  border-radius: 12px;
  font-family: monospace;
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 4px;
  width: 122px;
}
#mp-code-input:focus { outline: none; border-color: var(--accent2); box-shadow: 0 0 0 3px rgba(124,58,237,0.2); }
#mp-code-input::placeholder { color: var(--muted); letter-spacing: 1px; font-weight: 400; }

#btn-mp-join {
  padding: 9px 22px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  border: none;
  color: #fff;
  border-radius: 50px;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.9rem;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 4px 16px rgba(124,58,237,0.38);
}
#btn-mp-join:hover { transform: scale(1.06); box-shadow: 0 6px 22px rgba(124,58,237,0.52); }

#mp-lobby-error { font-size: 0.8rem; color: var(--red); min-height: 1em; text-align: center; font-weight: 600; }

#mp-lobby-code { font-size: 0.88rem; color: var(--muted); text-align: center; }

#mp-code-display {
  font-family: monospace;
  font-size: 2.2rem;
  color: var(--gold2);
  letter-spacing: 8px;
  font-weight: 900;
  display: inline-block;
  margin-top: 4px;
  text-shadow: 0 0 24px rgba(251,191,36,0.55);
}

#btn-mp-copy {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 3px 10px;
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.85rem;
  margin-left: 10px;
  vertical-align: middle;
  transition: all 0.15s;
  font-weight: 600;
}
#btn-mp-copy:hover { color: var(--gold2); border-color: var(--gold2); }

/* ── Leaderboard ── */
#leaderboard-area { display: none; min-width: 280px; max-width: 480px; width: 100%; }

#lb-game-type-tabs { display: flex; gap: 6px; margin-bottom: 12px; flex-wrap: wrap; }
#lb-tabs       { display: flex; gap: 6px; margin-bottom: 14px; }

.lb-game-type-tab, .lb-tab {
  padding: 6px 16px;
  background: rgba(124,58,237,0.1);
  border: 1px solid rgba(124,58,237,0.28);
  color: var(--muted);
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 700;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.lb-game-type-tab:hover, .lb-tab:hover {
  color: var(--text);
  border-color: var(--accent2);
  transform: scale(1.05);
}
.lb-game-type-tab.active, .lb-tab.active {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(124,58,237,0.38);
}

#lb-table { width: 100%; border-collapse: collapse; font-size: 0.83rem; }
#lb-table th, #lb-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
#lb-table th { color: var(--gold2); font-weight: 700; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 1px; }
#lb-table tr:hover td { background: rgba(124,58,237,0.08); }

.replay-btn {
  background: rgba(124,58,237,0.12);
  border: 1px solid rgba(124,58,237,0.3);
  color: var(--accent2);
  padding: 3px 10px;
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 600;
  transition: all 0.15s;
}
.replay-btn:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ── FAQ ── */
#faq-area { display: none; min-width: 280px; max-width: 560px; width: 100%; }

.faq-title {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--muted);
  font-weight: 700;
  margin-bottom: 16px;
}

.faq-item { border-bottom: 1px solid var(--border); padding: 16px 0; }
.faq-item:last-child { border-bottom: none; }

.faq-q { font-size: 0.9rem; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.faq-a { font-size: 0.82rem; color: var(--muted); line-height: 1.7; }

.faq-a code {
  font-family: monospace;
  font-size: 0.8rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  color: var(--gold2);
}

/* ── Mode picker ── */
#mode-picker {
  display: none;
  width: 100%;
  align-items: flex-start;
  justify-content: center;
  padding: 24px 16px;
  overflow-y: auto;
}
#mode-picker.visible { display: flex; }

#mode-picker-box {
  background: linear-gradient(180deg, var(--surface) 0%, var(--panel) 100%);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 30px;
  max-width: 460px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 24px 70px rgba(0,0,0,0.65), 0 0 0 1px rgba(124,58,237,0.18), 0 0 50px rgba(124,58,237,0.08);
}

.mode-picker-title {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--gold2);
  text-transform: uppercase;
  letter-spacing: 3px;
  text-shadow: 0 0 18px rgba(251,191,36,0.35);
}

.mode-picker-options { display: flex; flex-direction: column; gap: 8px; }

.mode-pick-btn {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 18px;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 100%;
}
.mode-pick-btn:hover {
  border-color: var(--accent);
  background: rgba(124,58,237,0.14);
  transform: scale(1.02) translateX(5px);
  box-shadow: 0 4px 22px rgba(124,58,237,0.2), -4px 0 0 var(--accent);
}

.mode-pick-name { font-size: 0.95rem; font-weight: 800; color: var(--text); }
.mode-pick-desc { font-size: 0.76rem; color: var(--muted); line-height: 1.4; }

#mode-picker-feedback {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 8px 16px;
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 600;
  transition: all 0.15s;
  align-self: flex-start;
}
#mode-picker-feedback:hover { color: var(--text); border-color: var(--accent2); background: rgba(124,58,237,0.1); }

/* ── Splash IP note ── */
.splash-ip-note { font-size: 0.7rem; color: var(--muted); text-align: center; line-height: 1.4; opacity: 0.7; }

/* ── Day / Hour sub-tabs ── */
#lb-day-tabs, #lb-hour-tabs { display: flex; gap: 6px; margin-bottom: 10px; flex-wrap: wrap; }

.lb-hour-tab {
  padding: 5px 14px;
  background: rgba(124,58,237,0.1);
  border: 1px solid rgba(124,58,237,0.28);
  color: var(--muted);
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.76rem;
  font-weight: 700;
  transition: all 0.15s;
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.3;
}
.lb-hour-tab:hover { color: var(--text); border-color: var(--accent2); }
.lb-hour-tab.active {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 3px 14px rgba(124,58,237,0.38);
}
.lb-hour-tab .lb-hour-seed { font-size: 0.62rem; opacity: 0.7; font-weight: 400; font-family: monospace; }

/* ── Feedback panel ── */
#feedback-panel {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.84);
  backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  z-index: 200;
}

#feedback-box {
  background: linear-gradient(180deg, var(--surface) 0%, var(--panel) 100%);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 28px;
  max-width: 420px;
  width: calc(100% - 32px);
  box-shadow: 0 24px 70px rgba(0,0,0,0.75), 0 0 0 1px rgba(124,58,237,0.18);
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-height: calc(100dvh - 48px);
  overflow-y: auto;
}

.feedback-ip-note {
  font-size: 0.72rem;
  color: var(--gold2);
  line-height: 1.5;
  padding: 8px 12px;
  background: rgba(255,214,10,0.07);
  border-radius: 10px;
  border: 1px solid rgba(255,214,10,0.2);
  font-weight: 600;
}

#feedback-msg {
  width: 100%;
  padding: 10px 14px;
  background: var(--panel);
  border: 2px solid var(--border);
  color: var(--text);
  border-radius: 12px;
  font-size: 0.88rem;
  font-family: inherit;
  resize: vertical;
  min-height: 100px;
}
#feedback-msg:focus { outline: none; border-color: var(--accent2); box-shadow: 0 0 0 3px rgba(124,58,237,0.2); }
#feedback-msg::placeholder { color: var(--muted); }

#feedback-email {
  width: 100%;
  padding: 9px 14px;
  background: var(--panel);
  border: 2px solid var(--border);
  color: var(--text);
  border-radius: 12px;
  font-size: 0.88rem;
}
#feedback-email:focus { outline: none; border-color: var(--accent2); box-shadow: 0 0 0 3px rgba(124,58,237,0.2); }
#feedback-email::placeholder { color: var(--muted); }

#feedback-send {
  padding: 10px 28px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  border: none;
  color: #fff;
  border-radius: 50px;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.9rem;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  align-self: flex-start;
  box-shadow: 0 4px 16px rgba(124,58,237,0.38);
}
#feedback-send:hover { transform: scale(1.06); box-shadow: 0 6px 22px rgba(124,58,237,0.52); }

#feedback-status { font-size: 0.82rem; color: var(--green); min-height: 1em; font-weight: 600; }

#feedback-close, .icon-btn {
  background: transparent;
  border: none;
  color: var(--muted);
  font-size: 1.1rem;
  cursor: pointer;
  padding: 5px 7px;
  line-height: 1;
  border-radius: 50%;
  transition: background 0.15s, color 0.15s;
}
#feedback-close:hover, .icon-btn:hover { color: var(--text); background: rgba(255,255,255,0.1); }

/* ── Profile + Settings panel ── */

.settings-header { display: flex; align-items: center; justify-content: space-between; }
.settings-header h2 {
  font-size: 1rem;
  font-weight: 800;
  color: var(--gold2);
  text-transform: uppercase;
  letter-spacing: 3px;
  text-shadow: 0 0 18px rgba(251,191,36,0.32);
}

.settings-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.settings-section:last-child { border-bottom: none; padding-bottom: 0; }

.settings-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.settings-row { display: flex; gap: 8px; }
.settings-row input {
  flex: 1;
  padding: 9px 14px;
  background: var(--panel);
  border: 2px solid var(--border);
  color: var(--text);
  border-radius: 12px;
  font-size: 0.88rem;
  min-width: 0;
}
.settings-row input:focus { outline: none; border-color: var(--accent2); box-shadow: 0 0 0 3px rgba(124,58,237,0.2); }
.settings-row input::placeholder { color: var(--muted); }
.settings-row button {
  padding: 9px 16px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  border: none;
  color: #fff;
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 700;
  white-space: nowrap;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 3px 12px rgba(124,58,237,0.32);
}
.settings-row button:hover { transform: scale(1.06); box-shadow: 0 5px 18px rgba(124,58,237,0.48); }

#settings-colorscheme {
  padding: 9px 12px;
  background: var(--panel);
  border: 2px solid var(--border);
  color: var(--text);
  border-radius: 12px;
  font-size: 0.88rem;
  cursor: pointer;
}
#settings-colorscheme:focus { outline: none; border-color: var(--accent2); }



/* ── Profile + Settings panel ── */
#profile-panel {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.84);
  backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  z-index: 200;
}

#profile-box {
  background: linear-gradient(180deg, var(--surface) 0%, var(--panel) 100%);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 28px;
  max-width: 480px;
  width: calc(100% - 32px);
  box-shadow: 0 24px 70px rgba(0,0,0,0.75), 0 0 0 1px rgba(124,58,237,0.18);
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-height: calc(100dvh - 48px);
  overflow-y: auto;
}

#profile-username { font-size: 1.1rem; font-weight: 800; color: var(--gold2); text-transform: uppercase; letter-spacing: 3px; text-shadow: 0 0 18px rgba(251,191,36,0.32); }
#profile-guid { font-family: monospace; font-size: 0.78rem; color: var(--muted); }
#profile-guid-blurb { color: var(--muted); font-size: 0.78rem; line-height: 1.5; margin: 0; }
#profile-stats { color: var(--muted); font-size: 0.88rem; }
#profile-empty { color: var(--muted); font-size: 0.9rem; text-align: center; padding: 24px 0; }

#profile-history-table { width: 100%; border-collapse: collapse; font-size: 0.8rem; }
#profile-history-table th, #profile-history-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
#profile-history-table th { color: var(--gold2); font-weight: 700; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 1px; }
#profile-history-table tr:hover td { background: rgba(124,58,237,0.08); }

#profile-load-more {
  margin-top: 12px;
  padding: 8px 20px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.82rem;
  transition: border-color 0.2s, color 0.2s;
}
#profile-load-more:hover { border-color: var(--accent2); color: var(--text); }

.profile-mode-chip {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 700;
}

#settings-account-id { font-family: monospace; font-size: 0.78rem; color: var(--muted); }

#settings-account-status { font-size: 0.8rem; min-height: 1em; color: var(--green); font-weight: 600; }
#settings-account-status.error { color: var(--red); }

#settings-email-status { font-size: 0.8rem; min-height: 1em; font-weight: 600; line-height: 1.5; }
#settings-email-status.pending   { color: #c8a800; }
#settings-email-status.confirmed { color: var(--green); }
#settings-email-status .resend-link { color: var(--accent2); cursor: pointer; text-decoration: underline; background: none; border: none; font: inherit; padding: 0; }

#color-swatches { display: flex; gap: 18px; }
.swatch { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.swatch-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.14);
  transition: background 0.2s;
  box-shadow: 0 3px 10px rgba(0,0,0,0.45);
}
.swatch span { font-size: 0.68rem; color: var(--muted); font-weight: 600; }

.toggle-group {
  display: flex;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 50px;
  overflow: hidden;
  width: fit-content;
  padding: 3px;
  gap: 2px;
}
.toggle-btn {
  padding: 7px 22px;
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 700;
  transition: all 0.2s;
  border-radius: 50px;
}
.toggle-btn.active {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  color: #fff;
  box-shadow: 0 2px 10px rgba(124,58,237,0.42);
}
.toggle-btn:hover:not(.active) { color: var(--text); background: rgba(255,255,255,0.07); }

.settings-hint { font-size: 0.78rem; color: var(--muted); line-height: 1.5; min-height: 1.2em; }

/* ── Modal ── */
#modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.84);
  backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  z-index: 200;
}

#modal-box {
  background: linear-gradient(180deg, var(--surface) 0%, var(--panel) 100%);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 38px 32px;
  max-width: 380px;
  width: calc(100% - 32px);
  text-align: center;
  box-shadow: 0 24px 70px rgba(0,0,0,0.75), 0 0 0 1px rgba(124,58,237,0.18);
}

#modal-title { font-size: 1.55rem; margin-bottom: 12px; color: var(--gold2); font-weight: 800; text-shadow: 0 0 22px rgba(251,191,36,0.35); }
#modal-body  { margin-bottom: 26px; line-height: 1.7; color: var(--muted); }

#modal-close {
  padding: 11px 34px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  border: none;
  color: #fff;
  border-radius: 50px;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.95rem;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 4px 16px rgba(124,58,237,0.38);
}
#modal-close:hover { transform: scale(1.06); box-shadow: 0 6px 22px rgba(124,58,237,0.52); }

/* ── Splash / onboarding ── */
#splash {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--bg);
  background-image: radial-gradient(ellipse 120% 60% at 50% -5%, #2a0d5e 0%, transparent 65%);
  align-items: center;
  justify-content: center;
  z-index: 500;
  padding: 16px;
  overflow-y: auto;
}

#splash-box {
  background: linear-gradient(180deg, var(--surface) 0%, var(--panel) 100%);
  border: 1px solid var(--border);
  border-radius: 26px;
  padding: 40px 30px;
  max-width: 440px;
  width: 100%;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: 0 32px 90px rgba(0,0,0,0.85), 0 0 0 1px rgba(124,58,237,0.22), 0 0 70px rgba(124,58,237,0.1);
}

#splash-box h1 {
  font-size: 2.5rem;
  letter-spacing: 6px;
  display: block;
  filter: drop-shadow(0 0 18px rgba(167,139,250,0.42));
}

.splash-sub {
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-top: -12px;
  font-weight: 600;
}

.splash-rules {
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
  background: rgba(255,255,255,0.04);
  border-radius: 14px;
  padding: 16px 18px;
  border: 1px solid var(--border);
}
.rule { font-size: 0.88rem; line-height: 1.6; font-weight: 500; }

.splash-name { display: flex; gap: 8px; }
.splash-name input {
  flex: 1;
  padding: 10px 14px;
  background: var(--panel);
  border: 2px solid var(--border);
  color: var(--text);
  border-radius: 12px;
  font-size: 0.9rem;
  min-width: 0;
}
.splash-name input:focus { outline: none; border-color: var(--accent2); box-shadow: 0 0 0 3px rgba(124,58,237,0.2); }
.splash-name input::placeholder { color: var(--muted); }
.splash-name button {
  padding: 10px 18px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  border: none;
  color: #fff;
  border-radius: 50px;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.88rem;
  white-space: nowrap;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 3px 12px rgba(124,58,237,0.38);
}
.splash-name button:hover { transform: scale(1.06); box-shadow: 0 5px 18px rgba(124,58,237,0.52); }

#splash-play {
  padding: 15px;
  background: linear-gradient(180deg, var(--gold2) 0%, var(--gold) 65%);
  border: 2px solid rgba(255,255,255,0.38);
  border-bottom-color: #7c3400;
  color: #1a0800;
  border-radius: 50px;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 1px;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 7px 0 #7c3400, 0 12px 28px rgba(245,158,11,0.42);
}
#splash-play:hover {
  transform: scale(1.04) translateY(-2px);
  box-shadow: 0 9px 0 #7c3400, 0 16px 35px rgba(245,158,11,0.55);
}
#splash-play:active {
  transform: scale(0.98) translateY(5px);
  box-shadow: 0 2px 0 #7c3400, 0 4px 14px rgba(245,158,11,0.3);
}

/* ── BMC links ── */
#bmc-header {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  padding: 6px 14px;
  transition: all 0.15s;
  border-radius: 50px;
}
#bmc-header:hover { color: var(--gold2); background: rgba(255,214,10,0.08); }

.bmc-btn-splash { font-size: 0.75rem; color: var(--muted); text-decoration: none; cursor: pointer; transition: color 0.15s; font-weight: 600; }
.bmc-btn-splash:hover { color: var(--gold2); }

/* ── Beta badge ── */
.beta-badge {
  font-size: 0.62rem;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  color: #fff;
  border-radius: 50px;
  padding: 1px 6px;
  vertical-align: middle;
  margin-left: 4px;
  font-weight: 700;
}

/* ── Splash options ── */
.splash-options {
  display: flex;
  flex-direction: column;
  gap: 14px;
  text-align: left;
  background: rgba(255,255,255,0.04);
  border-radius: 14px;
  padding: 16px 18px;
  border: 1px solid var(--border);
}
.splash-option-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.splash-option-label { font-size: 0.72rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: 1.5px; }
.splash-options select {
  padding: 7px 12px;
  background: var(--surface);
  border: 2px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  font-size: 0.85rem;
  cursor: pointer;
}
#splash-color-swatches { display: flex; justify-content: space-around; }

/* ── Drag demo ── */
.drag-demo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 12px;
  background: rgba(255,255,255,0.04);
  border-radius: 12px;
  border: 1px solid var(--border);
  position: relative;
}
.drag-demo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
  width: 60px;
  height: 60px;
  animation: demo-spin 2.6s ease-in-out infinite;
  transform-origin: center;
}
.drag-demo-cell {
  background: var(--c);
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.3);
}
.drag-demo-cursor {
  position: absolute;
  width: 12px;
  height: 12px;
  border: 2px solid rgba(255,255,255,0.9);
  border-radius: 50%;
  top: 28px;
  left: calc(50% - 6px);
  animation: demo-cursor 2.6s ease-in-out infinite;
}
.drag-demo-label { font-size: 0.7rem; color: var(--muted); font-weight: 600; }

@keyframes logo-scroll {
  from { background-position-x: 0px; }
  to   { background-position-x: -400px; }
}
@keyframes demo-spin {
  0%, 25%   { transform: rotate(0deg); }
  65%, 100% { transform: rotate(90deg); }
}
@keyframes demo-cursor {
  0%   { opacity: 0; transform: translateX(-18px); }
  15%  { opacity: 1; transform: translateX(-18px); }
  55%  { opacity: 1; transform: translateX(18px); }
  70%  { opacity: 0; transform: translateX(18px); }
  100% { opacity: 0; transform: translateX(-18px); }
}

/* ── Responsive ── */
@media (max-width: 480px) {
  header { padding: 8px 12px; }
  h1 { font-size: 1.1rem; letter-spacing: 3px; }
  .mode-btn { padding: 6px 10px; font-size: 0.85rem; }
  main { padding: 8px; }
  #controls { width: 100%; }
  #controls button { width: 54px; height: 54px; }
  #btn-cw, #btn-ccw { width: 62px; height: 62px; font-size: 1.75rem; }
  .dpad-gap { width: 54px; height: 54px; }
  #seed-input { display: none; }
}

@media (orientation: landscape) and (max-height: 520px) {
  header { padding: 6px 14px; }
  main { padding: 6px 10px; }
  #game-area { gap: 6px; }
  #board-wrap { width: min(calc(100dvh - 120px), calc(100vw - 32px), 900px); }
  #mode-controls { display: none; }
}

@media (min-width: 1200px) {
  main { padding: 24px; }
  #game-area { gap: 16px; }
}