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

body {
  background: #0a0a1a;
  color: #e0e0ff;
  font-family: 'Segoe UI', sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
}

/* ── Stars ── */
.stars {
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 10% 20%, #fff 0%, transparent 100%),
    radial-gradient(1px 1px at 30% 60%, #aaf 0%, transparent 100%),
    radial-gradient(1px 1px at 55% 15%, #fff 0%, transparent 100%),
    radial-gradient(1px 1px at 75% 80%, #ccf 0%, transparent 100%),
    radial-gradient(1px 1px at 90% 40%, #fff 0%, transparent 100%),
    radial-gradient(1px 1px at 20% 85%, #aaf 0%, transparent 100%),
    radial-gradient(1px 1px at 65% 50%, #fff 0%, transparent 100%),
    radial-gradient(1px 1px at 45% 90%, #ccf 0%, transparent 100%),
    radial-gradient(1px 1px at 85% 10%, #fff 0%, transparent 100%),
    radial-gradient(1px 1px at 5%  50%, #aaf 0%, transparent 100%);
  pointer-events: none;
  z-index: 0;
}

/* ── Header ── */
header {
  text-align: center;
  padding: 24px 16px 8px;
  z-index: 1;
}

h1 {
  font-size: 2.2rem;
  letter-spacing: 6px;
  text-transform: uppercase;
  background: linear-gradient(135deg, #a78bfa, #60a5fa, #f472b6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: none;
  filter: drop-shadow(0 0 12px #a78bfa88);
}

.subtitle {
  font-size: 0.8rem;
  color: #7070aa;
  letter-spacing: 2px;
  margin-top: 4px;
}

#reset-btn {
  margin-top: 10px;
  padding: 6px 18px;
  border: 1px solid #3a3a6a;
  border-radius: 20px;
  background: transparent;
  color: #a78bfa;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 1px;
  transition: background 0.2s, transform 0.1s;
}

#reset-btn:hover {
  background: #1e1e3a;
  transform: scale(1.05);
}

/* ── Board ── */
#board {
  display: grid;
  grid-template-rows: repeat(6, 1fr);
  gap: 6px;
  padding: 20px 0 12px;
  z-index: 1;
}

.row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
}

.tile {
  width: 58px;
  height: 58px;
  border: 2px solid #2a2a4a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 700;
  text-transform: uppercase;
  border-radius: 6px;
  background: #11112a;
  transition: border-color 0.1s;
  perspective: 250px;
  position: relative;
}

.tile.filled { border-color: #5050aa; animation: pop 0.1s ease; }

@keyframes pop {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.12); }
  100% { transform: scale(1); }
}

.tile.flip {
  animation: flip 0.5s ease forwards;
}

@keyframes flip {
  0%   { transform: rotateX(0deg); }
  50%  { transform: rotateX(-90deg); background: #11112a; }
  100% { transform: rotateX(0deg); }
}

.tile.correct  { background: #15803d; border-color: #16a34a; color: #fff; }
.tile.present  { background: #b45309; border-color: #d97706; color: #fff; }
.tile.absent   { background: #1e1e3a; border-color: #3a3a5a; color: #888; }

.tile.shake { animation: shake 0.4s ease; }
@keyframes shake {
  0%,100% { transform: translateX(0); }
  20%     { transform: translateX(-6px); }
  40%     { transform: translateX(6px); }
  60%     { transform: translateX(-4px); }
  80%     { transform: translateX(4px); }
}

/* ── Keyboard ── */
#keyboard {
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 1;
  padding-bottom: 16px;
}

.kb-row {
  display: flex;
  justify-content: center;
  gap: 5px;
}

.key {
  height: 54px;
  min-width: 36px;
  padding: 0 6px;
  border: none;
  border-radius: 6px;
  background: #1e1e3a;
  color: #d0d0ff;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  text-transform: uppercase;
  transition: background 0.2s, transform 0.1s;
  letter-spacing: 0.5px;
}

.key:hover { background: #2e2e5a; transform: translateY(-2px); }
.key.wide  { min-width: 58px; font-size: 0.75rem; }

.key.correct { background: #15803d; color: #fff; }
.key.present { background: #b45309; color: #fff; }
.key.absent  { background: #111128; color: #444; }

/* ── Message ── */
#message {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: #a78bfa;
  color: #0a0a1a;
  padding: 8px 20px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 0.9rem;
  opacity: 0;
  transition: opacity 0.3s;
  z-index: 10;
  pointer-events: none;
  white-space: nowrap;
}

#message.show { opacity: 1; }

/* ── Modal ── */
#modal {
  position: fixed;
  inset: 0;
  background: #0a0a1acc;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
  backdrop-filter: blur(4px);
}

#modal.hidden { display: none; }

.modal-box {
  background: #12122a;
  border: 1px solid #3a3a6a;
  border-radius: 16px;
  padding: 36px 40px;
  text-align: center;
  box-shadow: 0 0 40px #a78bfa44;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

#modal-text  { font-size: 1.4rem; font-weight: 700; color: #a78bfa; }
#modal-word  { font-size: 1rem; color: #7070aa; letter-spacing: 2px; }

#restart-btn {
  margin-top: 8px;
  padding: 10px 28px;
  border: none;
  border-radius: 30px;
  background: linear-gradient(135deg, #a78bfa, #60a5fa);
  color: #0a0a1a;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}

#restart-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 0 16px #a78bfa88;
}

@media (max-width: 420px) {
  .tile { width: 50px; height: 50px; font-size: 1.3rem; }
  .key  { height: 46px; min-width: 30px; font-size: 0.75rem; }
  
  /* Welcome screen mobile fixes */
  .welcome-title { font-size: 2.8rem !important; letter-spacing: 6px !important; }
  .welcome-glow { font-size: 1.8rem !important; }
  .welcome-title-wrap { gap: 12px !important; }
  .welcome-sub { font-size: 0.9rem !important; padding: 0 20px !important; }
  .welcome-btns { flex-direction: column !important; gap: 10px !important; width: 100% !important; max-width: 280px !important; }
  .welcome-btns button { padding: 12px 24px !important; font-size: 0.95rem !important; }
  .welcome-content { gap: 16px !important; padding: 0 20px !important; }
}

@media (max-width: 480px) {
  .welcome-title { font-size: 2.5rem !important; letter-spacing: 4px !important; }
  .welcome-glow { font-size: 1.5rem !important; }
  .welcome-title-wrap { gap: 10px !important; }
  .welcome-sub { font-size: 0.85rem !important; }
  .welcome-btns button { padding: 10px 20px !important; font-size: 0.9rem !important; }
}

/* ── Welcome Screen ── */
#welcome {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0a0a1a;
  transition: opacity 0.7s ease;
}

#welcome.fade-out {
  opacity: 0;
  pointer-events: none;
}

#welcome.hidden { display: none; }

#space-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.welcome-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  animation: fadeInUp 1s ease both;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

.welcome-title-wrap {
  display: flex;
  align-items: center;
  gap: 18px;
}

.welcome-glow {
  font-size: 2.2rem;
  color: #a78bfa;
  filter: drop-shadow(0 0 10px #a78bfa);
  animation: glowPulse 2.2s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% { filter: drop-shadow(0 0 8px #a78bfa); }
  50%       { filter: drop-shadow(0 0 24px #f472b6); }
}

.welcome-title {
  font-size: 4.2rem;
  font-weight: 900;
  letter-spacing: 12px;
  text-transform: uppercase;
  background: linear-gradient(135deg, #a78bfa, #60a5fa, #f472b6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 28px #a78bfa88);
}

.welcome-sub {
  font-size: 1rem;
  color: #7070aa;
  letter-spacing: 2px;
  text-align: center;
  animation: fadeInUp 1s 0.3s ease both;
}

.welcome-btns {
  display: flex;
  gap: 14px;
  margin-top: 8px;
  animation: fadeInUp 1s 0.5s ease both;
}

.welcome-btns button {
  padding: 13px 34px;
  border: none;
  border-radius: 30px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 1px;
  transition: transform 0.15s, box-shadow 0.15s;
}

#start-btn {
  background: linear-gradient(135deg, #a78bfa, #60a5fa);
  color: #0a0a1a;
  box-shadow: 0 0 20px #a78bfa55;
}

#start-btn:hover {
  transform: scale(1.07);
  box-shadow: 0 0 36px #a78bfaaa;
}

#how-btn {
  background: transparent;
  border: 1px solid #3a3a6a !important;
  color: #a78bfa;
}

#how-btn:hover {
  background: #1e1e3a;
  transform: scale(1.05);
}

/* ── How to Play Popup ── */
#htp-modal {
  position: fixed;
  inset: 0;
  background: #0a0a1acc;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  backdrop-filter: blur(4px);
}

#htp-modal.hidden { display: none; }

.htp-box {
  background: #12122a;
  border: 1px solid #3a3a6a;
  border-radius: 16px;
  padding: 36px 40px;
  text-align: center;
  box-shadow: 0 0 40px #a78bfa44;
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 340px;
  width: 90%;
  animation: fadeInUp 0.3s ease;
}

.htp-box h2 {
  font-size: 1.3rem;
  color: #a78bfa;
  letter-spacing: 3px;
  text-transform: uppercase;
}

.htp-box p { color: #c0c0ee; font-size: 0.95rem; }

.htp-box ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  text-align: left;
}

.htp-box li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #b0b0dd;
  font-size: 0.9rem;
}

.htp-tile {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
}

.htp-tile.correct { background: #15803d; color: #fff; }
.htp-tile.present { background: #b45309; color: #fff; }
.htp-tile.absent  { background: #1e1e3a; color: #888; border: 1px solid #3a3a5a; }

#htp-close {
  padding: 10px 28px;
  border: none;
  border-radius: 30px;
  background: linear-gradient(135deg, #a78bfa, #60a5fa);
  color: #0a0a1a;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
}

#htp-close:hover {
  transform: scale(1.05);
  box-shadow: 0 0 16px #a78bfa88;
}