@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;700&display=swap');

:root {
    --bg-color: #f0f2f5;
    --container-bg: #ffffff;
    --text-color: #333;
    --primary-color: #1a73e8;
    --secondary-color: #e8f0fe;
    --accent-color: #1967d2;
    --border-color: #dfe1e5;
    --error-color: #d93025;
    --success-color: #188038;
    --history-bg: #f8f9fa;
    --history-header: #5f6368;
}

[data-theme="dark"] {
    --bg-color: #121212;
    --container-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --primary-color: #8ab4f8;
    --secondary-color: #303134;
    --accent-color: #aecbfa;
    --border-color: #3c4043;
    --error-color: #f28b82;
    --success-color: #81c995;
    --history-bg: #202124;
    --history-header: #9aa0a6;
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease, color 0.3s ease;
}

#main-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    width: 100%;
    padding: 20px;
}

#game-container, #form-container, #disqus-container {
    background: var(--container-bg);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 500px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
}

#disqus-container {
    text-align: left;
}

.hidden {
    display: none !important;
}

#theme-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-color);
    padding: 8px;
    border-radius: 50%;
    transition: background-color 0.3s ease;
}

#theme-toggle:hover {
    background-color: var(--secondary-color);
}

h1, h2 {
    color: var(--primary-color);
    margin-bottom: 24px;
    font-size: 2em;
    font-weight: 700;
}

#word-display {
    font-size: 1.2em;
    margin-bottom: 24px;
    padding: 12px;
    background-color: var(--secondary-color);
    border-radius: 8px;
    display: inline-block;
}

#current-word {
    font-weight: 700;
    color: var(--accent-color);
}

#input-area {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
}

#word-input, .form-group input, .form-group textarea {
    flex-grow: 1;
    padding: 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1em;
    background-color: var(--container-bg);
    color: var(--text-color);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    width: 100%;
    box-sizing: border-box;
}

#word-input:focus, .form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.2);
}

#submit-button, #form-submit-btn, #form-toggle-btn {
    padding: 14px 24px;
    border: none;
    background: linear-gradient(135deg, #1a73e8, #4285f4);
    color: white;
    border-radius: 8px;
    font-size: 1em;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    width: 100%;
    margin-top: 10px;
}

#form-toggle-btn {
    background: linear-gradient(135deg, #5f6368, #80868b);
}

#form-close-btn {
    padding: 10px 20px;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-color);
    border-radius: 8px;
    font-size: 0.9em;
    cursor: pointer;
    width: 100%;
    margin-top: 10px;
}

#submit-button:hover, #form-submit-btn:hover, #form-toggle-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

.form-group {
    text-align: left;
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--history-header);
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

#message {
    min-height: 24px;
    font-size: 0.9em;
    font-weight: 500;
    margin-bottom: 16px;
}

#history-container {
    margin-top: 24px;
    text-align: left;
}

#history-container h2 {
    font-size: 1.1em;
    color: var(--history-header);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
    margin-bottom: 16px;
}

#word-history {
    list-style: none;
    padding: 0;
    max-height: 120px;
    overflow-y: auto;
    background-color: var(--history-bg);
    border-radius: 8px;
    padding: 8px;
}

#word-history li {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9em;
}

#word-history li:last-child {
    border-bottom: none;
}