:root {
    /* Light Mode Colors */
    --primary-color: #4a90e2;
    --secondary-color: #f5f7fa;
    --accent-color: #ff6b6b;
    --text-color: #333;
    --bg-color: #ffffff;
    --card-bg: #ffffff;
    --input-border: #eeeeee;
    --list-item-bg: #f9f9f9;
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    --overlay-bg: rgba(255, 255, 255, 0.95);
    --secondary-btn-color: #aaa;
}

[data-theme="dark"] {
    /* Dark Mode Colors */
    --primary-color: #64b5f6;
    --secondary-color: #1a1a1a;
    --accent-color: #ff8a80;
    --text-color: #e0e0e0;
    --bg-color: #121212;
    --card-bg: #242424;
    --input-border: #333333;
    --list-item-bg: #2d2d2d;
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    --overlay-bg: rgba(18, 18, 18, 0.98);
    --secondary-btn-color: #888;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
    transition: background-color 0.3s, color 0.3s, border-color 0.3s, box-shadow 0.3s;
}

body {
    background-color: var(--secondary-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.container {
    background: var(--card-bg);
    width: 90%;
    max-width: 450px;
    padding: 40px;
    border-radius: 24px;
    box-shadow: var(--card-shadow);
    text-align: center;
    position: relative;
}

header {
    margin-bottom: 30px;
}

.theme-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    font-size: 1.2rem;
    padding: 8px;
    border-radius: 50%;
    line-height: 1;
}

.theme-btn:hover {
    background-color: var(--list-item-bg);
}

header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--primary-color);
}

header p {
    font-size: 0.9rem;
    color: var(--secondary-btn-color);
}

.input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

input {
    flex: 1;
    padding: 12px 16px;
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--input-border);
    border-radius: 12px;
    outline: none;
    font-size: 1rem;
}

input:focus {
    border-color: var(--primary-color);
}

button {
    cursor: pointer;
    border: none;
    border-radius: 12px;
    font-weight: 600;
}

#add-btn {
    padding: 12px 20px;
    background-color: var(--primary-color);
    color: white;
}

#add-btn:hover {
    opacity: 0.9;
}

.list-container {
    max-height: 200px;
    overflow-y: auto;
    margin-bottom: 30px;
    text-align: left;
}

#menu-list {
    list-style: none;
}

#menu-list li {
    padding: 10px 14px;
    background: var(--list-item-bg);
    border-radius: 8px;
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.95rem;
}

.delete-btn {
    background: none;
    color: var(--secondary-btn-color);
    font-size: 0.8rem;
    padding: 4px 8px;
}

.delete-btn:hover {
    color: var(--accent-color);
}

.action-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.primary-btn {
    padding: 16px;
    background-color: var(--primary-color);
    color: white;
    font-size: 1.1rem;
}

.primary-btn:hover {
    transform: translateY(-2px);
}

.secondary-btn {
    padding: 10px;
    background: none;
    color: var(--secondary-btn-color);
    font-size: 0.9rem;
}

/* Result Overlay */
#result-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--overlay-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

.hidden {
    display: none !important;
}

.result-content h2 {
    font-size: 1.2rem;
    color: var(--secondary-btn-color);
    margin-bottom: 20px;
}

#selected-menu {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 40px;
}

#close-result {
    padding: 12px 30px;
    background: var(--text-color);
    color: var(--bg-color);
}