:root {
  color-scheme: only dark;
  --text: #dfeaf0;
  --background: #0b1116;
  --primary: #98b7cd;
  --secondary: #734338;
  --accent: #a2b565;

  --text-50: #eef3f7;
  --text-100: #dde8ee;
  --text-200: #bad0de;
  --text-300: #98b9cd;
  --text-400: #75a1bd;
  --text-500: #538aac;
  --text-600: #426e8a;
  --text-700: #325367;
  --text-800: #213745;
  --text-900: #111c22;
  --text-950: #080e11;

  --background-50: #eef2f6;
  --background-100: #dde6ee;
  --background-200: #bbccdd;
  --background-300: #99b2cc;
  --background-400: #7799bb;
  --background-500: #557faa;
  --background-600: #446688;
  --background-700: #334c66;
  --background-800: #223344;
  --background-900: #111922;
  --background-950: #090d11;

  --primary-50: #eef3f7;
  --primary-100: #dde7ee;
  --primary-200: #bacfde;
  --primary-300: #98b7cd;
  --primary-400: #759fbd;
  --primary-500: #5387ac;
  --primary-600: #426c8a;
  --primary-700: #325167;
  --primary-800: #213645;
  --primary-900: #111b22;
  --primary-950: #080d11;

  --secondary-50: #f7efee;
  --secondary-100: #eee0dd;
  --secondary-200: #dec1ba;
  --secondary-300: #cda298;
  --secondary-400: #bd8275;
  --secondary-500: #ac6353;
  --secondary-600: #8a4f42;
  --secondary-700: #673c32;
  --secondary-800: #452821;
  --secondary-900: #221411;
  --secondary-950: #110a08;

  --accent-50: #f5f7ee;
  --accent-100: #eaeedd;
  --accent-200: #d6deba;
  --accent-300: #c1cd98;
  --accent-400: #acbd75;
  --accent-500: #97ac53;
  --accent-600: #798a42;
  --accent-700: #5b6732;
  --accent-800: #3d4521;
  --accent-900: #1e2211;
  --accent-950: #0f1108;
}

body {
    background-color: var(--background);
    color: var(--text);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-family: sans-serif;
    text-align: center;
    padding: 20px;
}

table {
    border-collapse: collapse;
    margin: auto;
}

.clue {
    margin-top: 10px;
    margin-bottom: 10px;
    font-size: 15px;
    font-weight: bold;
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 10px;
}

.clue-item {
    padding: 2px;
    border-radius: 10px;
    color: var(--text);
    background-color: var(--background-800);
    transition: background-color 0.3s;
    display: flex;
    margin: 1px;
    align-items: center;
    color: var(--text);
    fill: var(--accent);
}

@media screen and (min-width: 900px) {
    .clue {
        grid-template-columns: repeat(3, 1fr);
    }
}

.clue-svg {
    margin-right: 8px;
    flex-shrink: 0;
}

.clue-number {
    margin-right: 6px;
    min-width: 20px;
}

.clue-text {
    flex: 1;
}

.clue-highlight {
    fill: var(--text-100);
    background-color: var(--accent-600);
    color: var(--text-100);
}



.completion-banner {
}

@keyframes spinOnce {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* available letter */
.available-letters {
    color: var(--text);
    margin-top: 15px;
    font-size: 16px;
}

.letters-grid {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 10px;
}

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

.letter-box {
    background-color: var(--background-800);
    color: var(--text);
    border: 1px solid var(--background-800);
    border-radius: 4px;
    padding: 6px 10px;
    font-weight: bold;
    font-size: 2vh;
    width: 2.5vh;
    height: 2.5vh;
    text-align: center;
    transition: background-color 0.2s, color 0.2s;
}

.letter-box.used {
    background-color: var(--background-900);
    color: var(--text);
    border-color: var(--background-900);
}

.letter-box.backspace {
    background-color: var(--secondary);
    line-height: 1;
    color: var(--text);
    font-size: 24px;
    align-items: center;
    justify-content: center;
    display: flex;
}

.letter-box.empty {
    visibility: hidden;
}

/* input */
#crossword-grid {
    display: grid;
    grid-template-rows: repeat(var(--rows), 1fr);
    grid-template-columns: repeat(var(--cols), 1fr);
    width: calc(var(--cols) * var(--cell-size));
    height: calc(var(--rows) * var(--cell-size));
    max-width: 95vmin;
    max-height: 95vmin;
    aspect-ratio: 1 / 1;
    margin: auto;
    gap: 2px;
}

.grid-input.current-word-cell {
    border-color: var(--accent);
    box-shadow: 0 0 2px var(--accent);
}

.grid-input {
    width: 100%;
    height: 100%;
    font-size: clamp(12px, calc(var(--cell-size) * 0.5), 24px);
    background-color: var(--background-900);
    color: var(--text);
    border: 1px solid var(--background-800);
    font-weight: bold;
    text-align: center;
    outline: none;
    border-radius: 6px;
    caret-color: transparent;
    box-sizing: border-box;
}

.grid-input.empty {
    background-color: var(--background);
    border: none;
    border-radius: 0px;
    pointer-events: none;
}

.grid-input.used  {
    background-color: var(--secondary);
}

.grid-input.used:focus  {
    background-color: var(--secondary);
    border-color: var(--secondary-800);
}

.grid-input:focus {
    background-color: var(--primary-800);
    border-color: var(--secondary-800);
}

.grid-input:disabled {
    background-color: var(--background-800);
    color: var(--secondary);
    border-color: var(--background-700);
    cursor: not-allowed;
}

.grid-input.completed {
    background-color: var(--accent-200);
    color: var(--text-900);
    border: 1px solid var(--background-900);
    box-shadow: inset 0 0 4px var(--secondary);
    font-weight: bold;
    pointer-events: none;
    opacity: 0.95;
    animation: spinOnce 1s ease-in-out 1;
}

/* calendar */
.calendar-wrapper {
  width: fit-content;
  margin: 40px auto;
}

.calendar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text);
  margin-bottom: 10px;
}

.calendar-header a {
  color: var(--text-400);
  text-decoration: none;
  font-size: 24px;
  padding: 0 10px;
}

.calendar-header h2 {
  font-size: 18px;
  margin: 0;
  font-weight: normal;
}

.calendar-container {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  background: var(--background-950);
  padding: 8px;
  border-radius: 8px;
}

.empty-nav {
  width: 40px;
  display: inline-block;
}

.day-name {
  font-weight: bold;
  text-align: center;
  color: var(--text);
}

.day {
  background: #2a2a2a;
  padding: 10px 0;
  text-align: center;
  border-radius: 4px;
  color: #eee;
}

.today {
  background: #3e3e3e;
  border: 1px solid #888;
  color: #ffcc66;
}

.completed {
  color: var(--text);
  font-weight: 600;
  box-shadow: inset 0 0 23px var(--accent);
  transition: transform 0.2s ease;
}

.completed:hover {
  transform: scale(1.05);
}

.uncompleted {
  color: var(--text);
  font-weight: 600;
  box-shadow: inset 0 0 23px var(--secondary);
  transition: transform 0.2s ease;
}

.day-link {
  text-decoration: none;
}

.day-link .day {
  cursor: pointer;
  transition: transform 0.2s ease;
}

.day-link .day:hover {
  transform: scale(1.10);
}

/* header */
.site-header {
    margin: auto;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 1rem;
    background-color: var(--background-900);
}

.site-title {
    margin: 0;
    font-size: 1.5rem;
    text-align: center;
    font-weight: bold;
    color: var(--text);
    text-decoration: none;
}

.site-title:hover {
    text-decoration: none;
}

.calendar-icon {
    position: absolute;
    left: 1rem;
    color: var(--text);
    text-decoration: none;
    display: flex;
    align-items: center;
}

.calendar-svg {
    width: 30px;
    height: 30px;
    fill: currentColor;
    padding: 30px;
}

.lang-dropdown {
    position: relative;
    display: inline-block;
}

.lang-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 0.3em;
    padding-left: 10px;
}

.lang-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--background-800);
    border: 1px solid var(--background-700);
    margin: 0;
    padding: 0.3em 0;
    list-style: none;
    width: 120px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.15);
    z-index: 1000;
}

.lang-menu li a {
    display: block;
    padding: 0.4em 1em;
    text-decoration: none;
    color: var(--text);
    font-size: 0.9rem;
}

.lang-menu li a:hover {
    background-color: var(--background-900);
}