:root {
    --bg-color: #f0f0f0;
    --text-color: #333;
    --secondary-text-color: #666;
    --modal-bg: #fefefe;
    --modal-border: #888;
    --pixel-bg: #fff;
    --pixel-border: #eee;
    --canvas-border: #ccc;
    --close-btn-color: #aaa;
    --close-btn-hover: black;
    --chat-bg: #fff;
    --btn-primary: #4A90E2;
}

[data-theme='dark'] {
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --secondary-text-color: #aaa;
    --modal-bg: #2d2d2d;
    --modal-border: #444;
    --pixel-bg: #333;
    --pixel-border: #444;
    --canvas-border: #555;
    --close-btn-color: #888;
    --close-btn-hover: white;
    --chat-bg: #252525;
}

body {
    font-family: "Pretendard", sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
    margin: 0;
    padding-bottom: 50px;
}

.top-bar {
    width: 100%;
    max-width: 800px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.language-selector, .auth-container, .theme-toggle-container {
    display: flex;
    gap: 10px;
    align-items: center;
}

.lang-btn, #theme-toggle, #login-btn, #logout-btn, #send-btn {
    padding: 6px 12px;
    cursor: pointer;
    border-radius: 8px;
    border: 1px solid var(--canvas-border);
    background-color: var(--modal-bg);
    color: var(--text-color);
    font-family: inherit;
    transition: all 0.2s ease;
}

.lang-btn.active {
    background-color: var(--btn-primary);
    color: white;
    border-color: var(--btn-primary);
}

#login-btn {
    background-color: #df4b37;
    color: white;
    border: none;
}

#chat-container {
    width: 90%;
    max-width: 400px;
    height: 300px;
    margin-top: 30px;
    background-color: var(--chat-bg);
    border: 1px solid var(--canvas-border);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
    font-size: 0.9em;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.message {
    padding: 6px 10px;
    border-radius: 8px;
    background-color: var(--bg-color);
}

.message .nickname {
    font-weight: bold;
    margin-right: 5px;
    color: var(--btn-primary);
}

.chat-input-wrapper {
    display: flex;
    padding: 10px;
    gap: 5px;
    border-top: 1px solid var(--canvas-border);
}

#chat-input {
    flex: 1;
    padding: 8px;
    border-radius: 6px;
    border: 1px solid var(--canvas-border);
    background-color: var(--pixel-bg);
    color: var(--text-color);
}

h1 {
    margin-top: 10px;
}

#cooldown-timer {
    font-size: 1em;
    margin-bottom: 20px;
    color: var(--secondary-text-color);
}

pixel-canvas {
    display: grid;
    grid-template-columns: repeat(20, 20px);
    grid-template-rows: repeat(20, 20px);
    border: 1px solid var(--canvas-border);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.modal {
    display: none;
    position: fixed;
    z-index: 100;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
}

.modal-content {
    background-color: var(--modal-bg);
    margin: 10% auto;
    padding: 25px;
    border: 1px solid var(--modal-border);
    width: 85%;
    max-width: 380px;
    text-align: center;
    border-radius: 15px;
    color: var(--text-color);
}

.close-button {
    color: var(--close-btn-color);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close-button:hover {
    color: var(--close-btn-hover);
}

.color-picker-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin: 20px auto;
}

.color-preview {
    width: 60px;
    height: 60px;
    border: 1px solid var(--canvas-border);
    border-radius: 8px;
}

.rgb-inputs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
    font-size: 0.9em;
}

.rgb-inputs input {
    width: 50px;
    background-color: var(--pixel-bg);
    color: var(--text-color);
    border: 1px solid var(--canvas-border);
    padding: 5px;
    border-radius: 6px;
    text-align: center;
}

.recent-colors-container {
    margin-top: 25px;
    padding-top: 15px;
    border-top: 1px solid var(--canvas-border);
}

.recent-colors {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.recent-color {
    width: 32px;
    height: 32px;
    border: 1px solid var(--canvas-border);
    border-radius: 6px;
    cursor: pointer;
    transition: transform 0.1s ease;
}

.recent-color:hover {
    transform: scale(1.1);
}