:root {
  --surface:    #0d2b55;
  --border:     #0d2b55;
  --text:       #f0ece2;
  --muted:      #e8e4dc;

  --correct:    #496936;
  --present:    #c9a84c;
  --absent:     #425978;

  --correct-t:  #d4f5e0;
  --present-t:  #fdefc8;
  --absent-t:   #c7c3bc;

  --tile-size:  clamp(46px, 10vw, 62px);
  --gap:        6px;

  --font-head:  'Inter', sans-serif;
  --font-mono:  'Source Sans 3', sans-serif;

  --navy: #0d2b55;
  --dark-red: #7a1f2e;
  --gold: #c9a84c;
  --cream: #f5f0e8;
  --light-gray: #e8e4dc;
  --text: #1a1a2e;
  --white: #ffffff;
  --olive-leaf: #496936;
  --apricot-cream: #f0c682;
  --steel-blue: #2484c6;
  --oxford-navy: ##003366;
}

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

html, body {
  height: 100%;
  background: var(--cream);
  color: var(--text);
  font-family: var(--font-mono);
  overflow-x: hidden;
  padding-top: 20px;
}

.bg-noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 150px;
}

body > * { position: relative; z-index: 1; }

header {
  text-align: center;
  padding: 28px 16px 12px;
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
}

.header-accent {
  color: var(--steel-blue);
  font-size: 1rem;
  animation: pulse 3s ease-in-out infinite;
}

h1 {
  font-family: var(--font-head);
  font-size: clamp(2.4rem, 8vw, 4rem);
  letter-spacing: 0.18em;
  color: var(--text);
  line-height: 1;
}

.subtitle {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--absent);
  text-transform: uppercase;
  margin-top: 6px;
}

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 16px 32px;
  gap: 20px;
}

.message-box {
  background: var(--absent);
  color: var(--cream);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 10px 22px;
  border-radius: 4px;
  animation: slideDown 0.25s ease;
  transition: opacity 0.4s;
}

.message-box.hidden { display: none; }

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.board {
  display: grid;
  grid-template-rows: repeat(6, var(--tile-size));
  gap: var(--gap);
}

.board-row {
  display: grid;
  grid-template-columns: repeat(5, var(--tile-size));
  gap: var(--gap);
}

.tile {
  width: var(--tile-size);
  height: var(--tile-size);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 4vw, 2rem);
  letter-spacing: 0.05em;
  border: 2px solid var(--border);
  background: transparent;
  color: var(--text);
  transition: border-color 0.1s;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.tile.filled {
  border-color: var(--steel-blue);
  animation: tilePop 0.1s ease;
}

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

.tile.shake {
  animation: shake 0.5s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  15%       { transform: translateX(-6px); }
  30%       { transform: translateX(6px); }
  45%       { transform: translateX(-5px); }
  60%       { transform: translateX(5px); }
  75%       { transform: translateX(-3px); }
  90%       { transform: translateX(3px); }
}

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

@keyframes flip {
  0%   { transform: rotateX(0deg); }
  49%  { transform: rotateX(90deg); }
  50%  { transform: rotateX(90deg); }
  100% { transform: rotateX(0deg); }
}

.tile.correct {
  background: var(--correct);
  border-color: var(--correct);
  color: var(--correct-t);
}

.tile.present {
  background: var(--present);
  border-color: var(--present);
  color: var(--present-t);
}

.tile.absent {
  background: var(--absent);
  border-color: var(--absent);
  color: var(--absent-t);
}

.tile.bounce {
  animation: bounce 0.6s ease forwards;
}

@keyframes bounce {
  0%   { transform: translateY(0); }
  30%  { transform: translateY(-18px); }
  55%  { transform: translateY(4px); }
  75%  { transform: translateY(-8px); }
  90%  { transform: translateY(2px); }
  100% { transform: translateY(0); }
}

.keyboard {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 80%;
  max-width: 480px;
}

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

.key {
  height: 50px;
  min-width: 30px;
  padding: 0 6px;
  flex: 1;
  max-width: 42px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--cream);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background 0.1s, transform 0.08s, border-color 0.2s;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.key:active {
  transform: scale(0.93);
  background: #2a2a2a;
}

.key-wide {
  min-width: 58px;
  max-width: 66px;
  font-size: 0.65rem;
  letter-spacing: 0.04em;
}

.key.correct {
  background: var(--correct);
  border-color: var(--correct);
  color: var(--correct-t);
}

.key.present {
  background: var(--present);
  border-color: var(--present);
  color: var(--present-t);
}

.key.absent {
  background: var(--absent);
  border-color: var(--absent);
  color: var(--absent-t);
}

.new-game-btn {
  font-family: var(--font-head);
  font-size: 1.2rem;
  letter-spacing: 0.2em;
  color: var(--cream);
  background: var(--steel-blue);
  border: none;
  padding: 14px 36px;
  border-radius: 4px;
  cursor: pointer;
  transition: transform 0.1s, background 0.2s;
  animation: fadeIn 0.5s ease;
}

.new-game-btn:hover {
  background: var(--steel-blue);
  transform: scale(1.04);
}

.new-game-btn:active {
  transform: scale(0.97);
}

.new-game-btn.hidden { display: none; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

@media (max-width: 380px) {
  .key { min-width: 30px; }
  .key-wide { min-width: 50px; max-width: 58px; }
}