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

:root {
    --background: #ffffff;
    --text-primary: #1a1a1b;
    --text-secondary: #787c7e;
    --border: #d3d6da;
    --key-bg: #d3d6da;
    --key-text: #1a1a1b;
    --correct: #6aaa64;
    --present: #c9b458;
    --absent: #787c7e;
    --tile-border: #d3d6da;
    --modal-bg: #ffffff;
    --hint-color: #3a7bd5;
    --freeplay-color: #8b5cf6;
}

body {
    font-family: 'Clear Sans', 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color 0.3s ease;
}

body.dark-mode {
    --background: #121213;
    --text-primary: #ffffff;
    --text-secondary: #818384;
    --border: #3a3a3c;
    --key-bg: #818384;
    --key-text: #ffffff;
    --tile-border: #3a3a3c;
    --modal-bg: #1a1a1b;
    --hint-color: #5a9fd5;
    --freeplay-color: #a78bfa;
}

.container {
    max-width: 500px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 0 16px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 50px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 10px;
}

h1 {
    font-size: 36px;
    font-weight: 700;
    letter-spacing: 0.2rem;
    text-transform: uppercase;
}

.header-buttons {
    display: flex;
    gap: 8px;
}

.icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 20px;
    color: var(--text-primary);
    padding: 8px;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.icon-btn:hover {
    background-color: var(--key-bg);
}

.mode-indicator {
    text-align: center;
    color: var(--freeplay-color);
    font-weight: bold;
    font-size: 14px;
    padding: 8px;
    margin-bottom: 10px;
    border-radius: 4px;
    background-color: var(--freeplay-color);
    background-color: rgba(139, 92, 246, 0.1);
    animation: fadeIn 0.5s ease;
}

.mode-indicator.hidden {
    display: none;
}

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

#game-container {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    flex-grow: 1;
    max-height: calc(100vh - 100px);
}

#board {
    display: grid;
    grid-template-rows: repeat(6, 1fr);
    grid-gap: 5px;
    padding: 10px;
    box-sizing: border-box;
    flex-grow: 1;
    max-width: 350px;
    max-height: 420px;
    width: 100%;
}

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

.tile {
    width: 100%;
    aspect-ratio: 1;
    font-size: 2rem;
    font-weight: bold;
    display: flex;
    justify-content: center;
    align-items: center;
    text-transform: uppercase;
    user-select: none;
    border: 2px solid var(--tile-border);
    transition: all 0.2s ease;
}

.tile.filled {
    animation: bounce 0.2s ease-in-out;
    border-color: var(--text-secondary);
}

.tile.reveal {
    animation: flip 0.6s ease;
}

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

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

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

.tile.hint {
    background-color: var(--hint-color);
    border-color: var(--hint-color);
    color: white;
    animation: pulse 1s ease-in-out;
}

.tile.shake {
    animation: shake 0.5s ease-in-out;
}

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

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

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-2px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(2px);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

#keyboard {
    margin: 0 8px;
    user-select: none;
    margin-bottom: 10px;
}

.keyboard-row {
    display: flex;
    width: 100%;
    margin: 0 auto 8px;
    touch-action: manipulation;
}

.keyboard-row:nth-child(2) {
    margin-left: 15px;
}

.key {
    font-weight: bold;
    border: 0;
    padding: 0;
    margin-right: 6px;
    height: 58px;
    border-radius: 4px;
    cursor: pointer;
    user-select: none;
    background-color: var(--key-bg);
    color: var(--key-text);
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    text-transform: uppercase;
    transition: all 0.2s;
}

.key.wide {
    flex: 1.5;
}

.key:hover {
    transform: scale(1.1);
}

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

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

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

.message {
    position: absolute;
    top: 10%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--text-primary);
    color: var(--background);
    padding: 16px 24px;
    border-radius: 4px;
    font-weight: bold;
    z-index: 1000;
    animation: slideDown 0.3s ease;
}

.message.hidden {
    display: none;
}

@keyframes slideDown {
    from {
        transform: translateX(-50%) translateY(-100px);
        opacity: 0;
    }
    to {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal.hidden {
    display: none;
}

.modal:not(.hidden) {
    display: block;
}

.modal-content {
    background-color: var(--modal-bg);
    margin: 10% auto;
    padding: 20px;
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    position: relative;
    max-height: 80vh;
    overflow-y: auto;
}

.close {
    color: var(--text-secondary);
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: var(--text-primary);
}

.examples {
    margin-top: 20px;
}

.example {
    margin: 20px 0;
}

.example .row {
    display: flex;
    gap: 5px;
    margin-bottom: 10px;
    justify-content: flex-start;
}

.example .tile {
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
}

/* Modal Buttons */
.modal-buttons {
    display: flex;
    gap: 10px;
    margin-top: 20px;
    justify-content: center;
}

.modal-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
    transition: opacity 0.2s;
}

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

.modal-btn.confirm {
    background-color: var(--correct);
    color: white;
}

.modal-btn.cancel {
    background-color: var(--text-secondary);
    color: white;
}

/* Statistics */
.statistics {
    text-align: center;
}

.stat-container {
    display: flex;
    justify-content: space-around;
    margin: 20px 0;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 36px;
    font-weight: bold;
}

.stat-label {
    font-size: 12px;
    color: var(--text-secondary);
}

#guess-distribution {
    margin: 20px 0;
}

.guess-distribution-row {
    display: flex;
    align-items: center;
    margin: 5px 0;
    height: 20px;
}

.guess-number {
    width: 20px;
    text-align: right;
    margin-right: 10px;
}

.guess-bar {
    background-color: var(--text-secondary);
    color: white;
    text-align: right;
    padding: 0 10px;
    min-width: 20px;
    font-weight: bold;
    font-size: 14px;
}

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

.share-btn, .freeplay-btn {
    background-color: var(--correct);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
}

.freeplay-btn {
    background-color: var(--freeplay-color);
}

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

.freeplay-btn.hidden {
    display: none;
}

/* Settings */
.setting {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
}

.setting-description {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 8px;
}

.toggle {
    position: relative;
    width: 50px;
    height: 25px;
    -webkit-appearance: none;
    background-color: var(--text-secondary);
    border-radius: 25px;
    outline: none;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

.toggle:before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    top: 2.5px;
    left: 2.5px;
    background-color: white;
    transition: transform 0.3s;
}

.toggle:checked:before {
    transform: translateX(25px);
}

@media (max-width: 500px) {
    h1 {
        font-size: 28px;
    }
    
    .header-buttons {
        gap: 4px;
    }
    
    .icon-btn {
        font-size: 18px;
        padding: 6px;
    }
    
    .tile {
        font-size: 1.5rem;
    }
    
    .key {
        height: 50px;
        font-size: 13px;
        margin-right: 4px;
    }
}