:root {
  --color-correct: #6aaa64;    
  --color-present: #c9b458;    
  --color-absent: #787c7e;     
  --color-seed: #e4d795;       /* Soft gold for placed seed letters */
  --color-border: #d3d6da;     
  --color-border-focus: #878a8c;
  --bg: #ffffff;
  --text: #1a1a1a;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: 0 !important; 
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem 1rem;
  min-height: 100vh;
}

/* MARLBORO-STYLE SERIF HEADER */
header {
  width: 100%;
  max-width: 330px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

header h1 {
  font-family: 'Playfair Display', serif;
  font-size: 2.2rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: #c92a2a; /* Deep elegant red for that aesthetic, or change to black */
}

/* SEED BANK TRAY */
.seed-bank {
  display: flex;
  gap: 8px;
  margin-bottom: 1.5rem;
  padding: 10px;
  background: transparent;
  min-height: 62px;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 330px;
}

.draggable-letter {
  width: 46px;
  height: 46px;
  border: 2px solid var(--color-border-focus);
  background: var(--color-absent);
  color: #ffffff;
  font-size: 1.4rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  user-select: none;
  text-transform: uppercase;
  transition: transform 0.1s ease;
}

.draggable-letter.used {
  opacity: 0.2;
  pointer-events: none;
  border-style: dashed;
}

.draggable-letter:active {
  transform: scale(0.9);
}

/* THE GRID */
.grid-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  width: 100%;
  max-width: 210px; 
  margin: 0 auto 2rem auto;
}

.cell {
  width: 48px;
  height: 48px;
  border: 2px solid var(--color-border);
  font-size: 1.6rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  text-transform: uppercase;
  background: var(--bg);
  color: var(--text);
  outline: none;
  text-align: center;
  caret-color: transparent;
  cursor: pointer;
  transition: border-color 0.1s ease;
}

.cell.active-focus {
  border-bottom: 4px solid var(--text);
}

.cell.is-seed {
  background-color: var(--color-seed);
  color: var(--text);
  border-color: var(--color-present);
}

.cell.invisible-space {
  border: none;
  background: transparent;
  pointer-events: none;
}

button {
  background: var(--color-border-focus);
  color: #ffffff;
  border: none;
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

button:hover { background: var(--text); }

/* MODALS & OVERLAYS */
.overlay {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(255, 255, 255, 0.9);
  z-index: 100;
}
.modal {
  position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%);
  background: var(--bg);
  border: 2px solid var(--text);
  padding: 2rem;
  width: 90%; max-width: 340px;
  z-index: 101;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}
.modal h2 { margin-bottom: 1rem; font-family: 'Playfair Display', serif; }
.modal p { margin-bottom: 1rem; line-height: 1.5; font-size: 0.95rem; }
.hidden { display: none !important; }

/* WIN ANIMATION CASCADE */
@keyframes flipToGreen {
  0% { transform: rotateX(0deg); background: var(--bg); }
  49% { background: var(--bg); color: var(--text); }
  50% { transform: rotateX(90deg); background: var(--color-correct); color: white; border-color: var(--color-correct); }
  100% { transform: rotateX(0deg); background: var(--color-correct); color: white; border-color: var(--color-correct); }
}
.cell.win-flip {
  animation: flipToGreen 0.6s ease forwards;
}