:root {
  /* Light mode (default) — cardinal / gold / white */
  --correct: #C8102E;
  --present: #F1BE48;
  --absent: #787c7e;
  --border-empty: #d3d6da;
  --border-filled: #878a8c;
  --key-bg: #d3d6da;
  --bg: #ffffff;
  --text: #1a1a1b;
  --subtext: #787c7e;
  --divider: #d3d6da;
  --modal-bg: #ffffff;
  --cardinal: #C8102E;
  --gold: #F1BE48;
  --tile-size: clamp(44px, 8.5vw, 62px);
  --gap: 5px;
  --font: 'Clear Sans', 'Helvetica Neue', Arial, sans-serif;
}

html.dark {
  /* Dark mode — black / cardinal / white */
  --correct: #C8102E;
  --present: #F1BE48;
  --absent: #3a3a3c;
  --border-empty: #3a3a3c;
  --border-filled: #565758;
  --key-bg: #818384;
  --bg: #121213;
  --text: #ffffff;
  --subtext: #818384;
  --divider: #3a3a3c;
  --modal-bg: #1a1a1b;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  transition: background 0.2s, color 0.2s;
}

/* HEADER */
header {
  width: 100%;
  max-width: 500px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  border-bottom: 1px solid var(--divider);
  margin-bottom: 14px;
}

.hdr-icon {
  width: 26px;
  height: 26px;
  color: var(--cardinal);
  flex-shrink: 0;
}

.hdr-title {
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hdr-icon-btn {
  width: 26px;
  height: 26px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--subtext);
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: color 0.1s;
}

.hdr-icon-btn:hover {
  color: var(--text);
}

.hdr-icon-btn svg {
  width: 20px;
  height: 20px;
}

html:not(.dark) .icon-sun { display: none; }
html:not(.dark) .icon-moon { display: block; }
html.dark .icon-sun { display: block; }
html.dark .icon-moon { display: none; }

/* DAY NAV */
#day-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  max-width: 500px;
  width: 100%;
  padding: 0 16px;
  margin-bottom: 10px;
}

.nav-arrow {
  font-family: var(--font);
  font-size: 1.4rem;
  font-weight: 700;
  width: 36px;
  height: 36px;
  border-radius: 4px;
  border: 1px solid var(--border-empty);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.1s;
}

.nav-arrow:hover:not(:disabled) {
  border-color: var(--text);
}

.nav-arrow:disabled {
  opacity: 0.2;
  cursor: default;
}

#day-info {
  text-align: center;
  min-width: 140px;
}

#day-number {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

#day-date {
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--subtext);
  margin-top: 2px;
}

/* DAY BLURB */
#day-blurb {
  display: none;
  font-size: 0.68rem;
  line-height: 1.5;
  color: var(--subtext);
  text-align: center;
  max-width: 340px;
  padding: 0 16px;
  margin-bottom: 10px;
}

/* SOLVED BANNER */
#solved-banner {
  display: none;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--correct);
  border: 1px solid var(--correct);
  border-radius: 2px;
  padding: 5px 14px;
  margin-bottom: 10px;
  cursor: pointer;
}

/* GRID */
#grid-container {
  display: flex;
  flex-direction: column;
  gap: var(--gap);
  margin-bottom: 16px;
}

.grid-row {
  display: flex;
  gap: var(--gap);
  align-items: center;
}

.tile {
  width: var(--tile-size);
  height: var(--tile-size);
  border: 2px solid var(--border-empty);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(1.1rem, 3.2vw, 1.5rem);
  font-weight: 700;
  text-transform: uppercase;
  user-select: none;
  color: var(--text);
}

.tile.filled {
  border-color: var(--border-filled);
}

.tile.correct {
  background: var(--correct);
  border-color: var(--correct);
  color: #fff;
  animation: flip 0.4s ease forwards;
}

.tile.present {
  background: var(--present);
  border-color: var(--present);
  color: #fff;
  animation: flip 0.4s ease forwards;
}

.tile.absent {
  background: var(--absent);
  border-color: var(--absent);
  color: #fff;
  animation: flip 0.4s ease forwards;
}

.tile.pop {
  animation: pop 0.1s ease;
}

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

@keyframes pop {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.1); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%      { transform: translateX(-4px); }
  40%      { transform: translateX(4px); }
  60%      { transform: translateX(-3px); }
  80%      { transform: translateX(3px); }
}

.shake {
  animation: shake 0.35s ease;
}

/* HINT ROW */
#hint-row {
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
}

#hint-btn {
  font-family: var(--font);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 7px 18px;
  border: 1px solid var(--gold);
  border-radius: 2px;
  background: transparent;
  color: var(--gold);
  cursor: pointer;
  display: none;
  transition: background 0.1s, color 0.1s;
}

#hint-btn:hover {
  background: var(--gold);
  color: #000;
}

#hint-display {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.hint-emoji {
  font-size: 1.6rem;
}

.hint-label {
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--subtext);
}

#reset-btn {
  font-family: var(--font);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 14px;
  border: 1px solid var(--subtext);
  border-radius: 2px;
  background: transparent;
  color: var(--subtext);
  cursor: pointer;
  display: none;
  transition: border-color 0.1s, color 0.1s;
}

#reset-btn:hover {
  border-color: var(--text);
  color: var(--text);
}

/* KEYBOARD */
#keyboard {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  max-width: 500px;
  padding: 0 8px;
  margin-bottom: 16px;
}

.key-row {
  display: flex;
  gap: 6px;
  justify-content: center;
}

.key {
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 700;
  height: 58px;
  min-width: 32px;
  flex: 1;
  max-width: 43px;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  background: var(--key-bg);
  color: var(--text);
  text-transform: uppercase;
}

.key:active {
  opacity: 0.7;
}

.key.wide {
  max-width: 65px;
  font-size: 0.72rem;
}

.key.correct {
  background: var(--correct);
  color: #fff;
}

.key.present {
  background: var(--present);
  color: #fff;
}

.key.absent {
  background: var(--absent);
  color: #fff;
}

/* TOAST */
#toast {
  position: fixed;
  top: 64px;
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  background: var(--text);
  color: var(--bg);
  font-family: var(--font);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  padding: 8px 16px;
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s, transform 0.15s;
  z-index: 100;
  white-space: nowrap;
}

#toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* MODAL */
#modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  padding: 16px;
}

#modal-overlay.show {
  opacity: 1;
  pointer-events: all;
}

#modal {
  background: var(--modal-bg);
  border: 1px solid var(--divider);
  border-radius: 8px;
  padding: 24px 20px 20px;
  max-width: 400px;
  width: 100%;
  text-align: center;
  transform: scale(0.95);
  transition: transform 0.2s;
}

#modal-overlay.show #modal {
  transform: scale(1);
}

.modal-icon {
  color: var(--cardinal);
  width: 34px;
  height: 34px;
  margin: 0 auto 10px;
}

#modal h2 {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

#modal-word {
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--subtext);
  margin-bottom: 14px;
}

#modal-desc {
  display: none;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text);
  opacity: 0.85;
  text-align: left;
  margin-bottom: 16px;
  padding: 14px 0;
  border-top: 1px solid var(--divider);
  border-bottom: 1px solid var(--divider);
}

#modal-grid {
  font-size: 1.2rem;
  line-height: 1.5;
  margin-bottom: 16px;
  font-family: monospace;
}

#copy-btn {
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 12px 24px;
  border-radius: 4px;
  border: none;
  background: var(--cardinal);
  color: #fff;
  cursor: pointer;
  width: 100%;
  margin-bottom: 10px;
}

#copy-btn:hover {
  opacity: 0.88;
}

#close-modal-btn {
  font-family: var(--font);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--subtext);
  background: none;
  border: none;
  cursor: pointer;
}

#close-modal-btn:hover {
  color: var(--text);
}

footer {
  margin-top: auto;
  padding: 20px 0 12px;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--subtext);
}