/* ===== CSS Custom Properties ===== */
:root {
  /* Base palette */
  --green: #6aaa64;
  --darkendGreen: #538d4e;
  --yellow: #c9b458;
  --darkendYellow: #b59f3b;
  --lightGray: #d8d8d8;
  --gray: #86888a;
  --darkGray: #939598;
  --white: #fff;
  --black: #212121;
  --orange: #f5793a;
  --blue: #85c0f9;

  /* Light theme (default) */
  --color-tone-1: #1a1a1b;
  --color-tone-2: #787c7e;
  --color-tone-3: #878a8c;
  --color-tone-4: #d3d6da;
  --color-tone-5: #edeff1;
  --color-tone-6: #f6f7f8;
  --color-tone-7: #ffffff;

  --color-correct: var(--green);
  --color-present: var(--yellow);
  --color-absent: var(--color-tone-2);

  --tile-text-color: var(--color-tone-1);
  --tile-text-color-evaluated: var(--white);

  --key-text-color: var(--color-tone-1);
  --key-evaluated-text-color: var(--white);
  --key-bg: var(--color-tone-4);
  --key-bg-correct: var(--color-correct);
  --key-bg-present: var(--color-present);
  --key-bg-absent: var(--color-tone-2);

  --color-background: var(--color-tone-7);
  --modal-content-bg: var(--color-tone-7);

  /* Layout */
  --header-height: 50px;
  --game-max-width: 500px;

  font-family: 'Clear Sans', 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
}

/* ===== Dark Theme ===== */
.nightmode {
  --color-tone-1: #d7dadc;
  --color-tone-2: #818384;
  --color-tone-3: #565758;
  --color-tone-4: #3a3a3c;
  --color-tone-5: #272729;
  --color-tone-6: #1a1a1b;
  --color-tone-7: #121213;

  --color-correct: var(--darkendGreen);
  --color-present: var(--darkendYellow);
  --color-absent: var(--color-tone-4);

  --tile-text-color: var(--color-tone-1);
  --tile-text-color-evaluated: var(--color-tone-1);

  --key-text-color: var(--color-tone-1);
  --key-evaluated-text-color: var(--color-tone-1);
  --key-bg: var(--color-tone-2);
  --key-bg-correct: var(--color-correct);
  --key-bg-present: var(--color-present);
  --key-bg-absent: var(--color-tone-4);

  --modal-content-bg: var(--color-tone-7);
}

/* ===== High Contrast / Colorblind ===== */
.colorblind {
  --color-correct: var(--orange);
  --color-present: var(--blue);
  --key-bg-correct: var(--orange);
  --key-bg-present: var(--blue);
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  background-color: var(--color-background);
  color: var(--color-tone-1);
  overflow: hidden;
  touch-action: manipulation;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
}

/* ===== App Layout ===== */
#game {
  width: 100%;
  max-width: var(--game-max-width);
  margin: 0 auto;
  height: 100%;
  display: flex;
  flex-direction: column;
}

/* ===== Header ===== */
#header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--header-height);
  border-bottom: 1px solid var(--color-tone-4);
  padding: 0 16px;
  flex-shrink: 0;
}

.header-left, .header-right {
  display: flex;
  align-items: center;
  gap: 4px;
}

.header-left {
  width: 70px;
  justify-content: flex-start;
}

.header-right {
  width: 110px;
  justify-content: flex-end;
}

.header-title {
  font-weight: 700;
  font-size: 36px;
  letter-spacing: 0.2rem;
  text-transform: uppercase;
  text-align: center;
  pointer-events: none;
}

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-tone-1);
  width: 36px;
  height: 36px;
  padding: 0;
}

.icon-btn:hover {
  opacity: 0.7;
}

/* ===== Toast ===== */
#toaster {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.toast {
  background-color: var(--color-tone-1);
  color: var(--color-tone-7);
  padding: 14px 18px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 14px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.toast.fade-out {
  opacity: 0;
}

/* ===== Board ===== */
#board-container {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-grow: 1;
  overflow: hidden;
}

#board {
  display: grid;
  grid-template-rows: repeat(6, 1fr);
  gap: 5px;
  padding: 10px;
  width: 350px;
  height: 420px;
}

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

/* ===== Tiles ===== */
.tile {
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  text-transform: uppercase;
  color: var(--tile-text-color);
  border: 2px solid var(--color-tone-4);
  user-select: none;
  aspect-ratio: 1;
}

.tile[data-state="tbd"] {
  border-color: var(--color-tone-3);
  color: var(--tile-text-color);
}

.tile[data-state="correct"] {
  background-color: var(--color-correct);
  border-color: var(--color-correct);
  color: var(--tile-text-color-evaluated);
}

.tile[data-state="present"] {
  background-color: var(--color-present);
  border-color: var(--color-present);
  color: var(--tile-text-color-evaluated);
}

.tile[data-state="absent"] {
  background-color: var(--color-absent);
  border-color: var(--color-absent);
  color: var(--tile-text-color-evaluated);
}

/* ===== Keyboard ===== */
#keyboard {
  padding: 0 8px;
  padding-bottom: 8px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  user-select: none;
}

.keyboard-row {
  display: flex;
  justify-content: center;
  gap: 6px;
  touch-action: manipulation;
}

.spacer-half {
  flex: 0.5;
}

.key {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0;
  height: 58px;
  min-width: 0;
  flex: 1;
  border-radius: 4px;
  background-color: var(--key-bg);
  color: var(--key-text-color);
  font-size: 13.333px;
  font-weight: 700;
  text-transform: uppercase;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: none;
}

.key:active {
  opacity: 0.8;
}

.key-large {
  flex: 1.5;
  font-size: 12px;
}

.key[data-state="correct"] {
  background-color: var(--key-bg-correct);
  color: var(--key-evaluated-text-color);
}

.key[data-state="present"] {
  background-color: var(--key-bg-present);
  color: var(--key-evaluated-text-color);
}

.key[data-state="absent"] {
  background-color: var(--key-bg-absent);
  color: var(--key-evaluated-text-color);
}

/* ===== Modal ===== */
#modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
}

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

#modal-content {
  background-color: var(--modal-content-bg);
  border-radius: 8px;
  padding: 24px;
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  color: var(--color-tone-1);
  box-shadow: 0 4px 23px 0 rgba(0, 0, 0, 0.2);
}

#modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 24px;
  color: var(--color-tone-1);
  cursor: pointer;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#modal-close:hover {
  opacity: 0.7;
}

/* ===== Modal - Help ===== */
.help-section {
  font-size: 14px;
  line-height: 1.5;
}

.help-section h2 {
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-align: center;
  margin-bottom: 10px;
}

.help-section p {
  margin-bottom: 12px;
}

.help-section .examples {
  border-top: 1px solid var(--color-tone-4);
  border-bottom: 1px solid var(--color-tone-4);
  padding: 16px 0;
  margin: 16px 0;
}

.help-section .example {
  margin-bottom: 16px;
}

.help-section .example:last-child {
  margin-bottom: 0;
}

.example-tiles {
  display: flex;
  gap: 5px;
  margin-bottom: 4px;
}

.example-tile {
  width: 40px;
  height: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.4rem;
  font-weight: 700;
  text-transform: uppercase;
  border: 2px solid var(--color-tone-4);
  color: var(--tile-text-color);
}

.example-tile[data-state="correct"] {
  background-color: var(--color-correct);
  border-color: var(--color-correct);
  color: var(--tile-text-color-evaluated);
}

.example-tile[data-state="present"] {
  background-color: var(--color-present);
  border-color: var(--color-present);
  color: var(--tile-text-color-evaluated);
}

.example-tile[data-state="absent"] {
  background-color: var(--color-absent);
  border-color: var(--color-absent);
  color: var(--tile-text-color-evaluated);
}

.example-description {
  font-size: 14px;
}

.example-description strong {
  text-transform: uppercase;
}

/* ===== Modal - Statistics ===== */
.stats-section h2 {
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-align: center;
  margin-bottom: 10px;
}

.stat-container {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-bottom: 16px;
}

.stat-box {
  flex: 1;
  text-align: center;
}

.stat-value {
  font-size: 36px;
  font-weight: 400;
  display: block;
}

.stat-label {
  font-size: 12px;
  display: block;
}

.distribution-section h3 {
  font-size: 14px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.distribution-row {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 4px;
  font-size: 14px;
  font-weight: 700;
}

.distribution-row .guess-num {
  width: 10px;
  text-align: right;
  flex-shrink: 0;
}

.distribution-row .bar {
  min-width: 20px;
  padding: 0 8px;
  text-align: right;
  color: var(--white);
  background-color: var(--color-absent);
  border-radius: 2px;
  line-height: 20px;
  font-size: 14px;
}

.distribution-row .bar.highlight {
  background-color: var(--color-correct);
}

.share-section {
  display: flex;
  justify-content: center;
  margin-top: 16px;
}

.share-btn {
  background-color: var(--color-correct);
  color: var(--white);
  font-size: 20px;
  font-weight: 700;
  padding: 12px 24px;
  border-radius: 4px;
  text-transform: uppercase;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
}

.share-btn:hover {
  opacity: 0.9;
}

/* ===== Modal - Settings ===== */
.settings-section h2 {
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-align: center;
  margin-bottom: 16px;
}

.setting-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-tone-4);
}

.setting-info {
  display: flex;
  flex-direction: column;
}

.setting-name {
  font-size: 18px;
}

.setting-description {
  font-size: 12px;
  color: var(--color-tone-2);
}

/* Toggle Switch */
.toggle {
  position: relative;
  width: 40px;
  height: 22px;
  flex-shrink: 0;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle .slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-tone-3);
  border-radius: 22px;
  transition: background-color 0.2s;
}

.toggle .slider::before {
  content: '';
  position: absolute;
  height: 18px;
  width: 18px;
  left: 2px;
  bottom: 2px;
  background-color: var(--white);
  border-radius: 50%;
  transition: transform 0.2s;
}

.toggle input:checked + .slider {
  background-color: var(--color-correct);
}

.toggle input:checked + .slider::before {
  transform: translateX(18px);
}

.toggle input:disabled + .slider {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ===== Custom Mode Banner ===== */
.custom-banner {
  background-color: var(--color-correct);
  color: var(--white);
  text-align: center;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
}

.custom-banner a {
  color: var(--white);
  text-decoration: underline;
  cursor: pointer;
  font-weight: 400;
}

/* ===== Create Modal ===== */
.create-section {
  text-align: center;
}

.create-section h2 {
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.create-section p {
  font-size: 14px;
  margin-bottom: 16px;
  color: var(--color-tone-2);
}

.create-input-row {
  display: flex;
  justify-content: center;
  gap: 5px;
  margin-bottom: 16px;
}

.create-input-row input {
  width: 50px;
  height: 58px;
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  text-transform: uppercase;
  border: 2px solid var(--color-tone-4);
  background: transparent;
  color: var(--color-tone-1);
  outline: none;
  caret-color: transparent;
  font-family: inherit;
}

.create-input-row input:focus {
  border-color: var(--color-tone-3);
}

.create-input-row input.filled {
  border-color: var(--color-tone-3);
}

.create-error {
  color: #e74c3c;
  font-size: 13px;
  min-height: 20px;
  margin-bottom: 12px;
}

.create-btn-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.create-generate-btn {
  background-color: var(--color-correct);
  color: var(--white);
  font-size: 16px;
  font-weight: 700;
  padding: 12px 32px;
  border-radius: 4px;
  text-transform: uppercase;
  cursor: pointer;
  width: 100%;
  max-width: 280px;
}

.create-generate-btn:hover {
  opacity: 0.9;
}

.create-generate-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.create-link-result {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-tone-4);
  width: 100%;
}

.create-link-result.visible {
  display: flex;
}

.create-link-box {
  width: 100%;
  padding: 12px;
  background: var(--color-tone-5);
  border-radius: 4px;
  word-break: break-all;
  font-size: 13px;
  color: var(--color-tone-1);
  font-family: monospace;
}

.create-copy-btn {
  background-color: var(--color-correct);
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  padding: 10px 24px;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
}

.create-copy-btn:hover {
  opacity: 0.9;
}

/* ===== Responsive ===== */
@media (max-height: 600px) {
  #board {
    height: 300px;
    width: 250px;
  }
  .tile {
    font-size: 1.5rem;
  }
  .key {
    height: 48px;
    font-size: 11px;
  }
}

@media (max-width: 360px) {
  #board {
    width: 300px;
    height: 360px;
  }
  .keyboard-row {
    gap: 4px;
  }
  .key {
    height: 52px;
  }
}