/* --- Base and Theme Variables --- */
:root {
    --bg-color: #f0f2f5;
    --text-color: #4f4f4f;
    --heading-color: #333;
    --accent-grad: linear-gradient(45deg, #ff8a00, #e52e71);
    --button-text-color: white;
    --card-bg-color: white;
    --card-shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.2);
    --card-border: rgba(0, 0, 0, 0.1);
    --card-heading-color: #333;
    --card-text-color: #666;
    --noise-bg: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" opacity="0.05"><filter id="noise"><feTurbulence type="fractalNoise" baseFrequency="0.8" numOctaves="4" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23noise)"/></svg>');
}

[data-theme="dark"] {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --heading-color: #ffffff;
    --accent-grad: linear-gradient(45deg, #ff9a2a, #f54e8a);
    --button-text-color: white;
    --card-bg-color: #1e1e1e;
    --card-shadow: 0 10px 30px -15px rgba(0, 0, 0, 0.7);
    --card-border: rgba(255, 255, 255, 0.15);
    --card-heading-color: #f0f0f0;
    --card-text-color: #aaa;
}

/* --- Base Styles --- */
body {
    font-family: "Pretendard", sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: var(--bg-color);
    background-image: var(--noise-bg);
    color: var(--text-color);
    transition: background-color 0.4s ease, color 0.4s ease;
    overflow: hidden;
}

.container {
    text-align: center;
    padding: 2rem;
    perspective: 1000px;
}

/* --- Title --- */
.main-title {
    font-family: 'Black Han Sans', sans-serif;
    font-size: clamp(2.5rem, 10vw, 5rem);
    color: var(--heading-color);
    margin-bottom: 2rem;
    text-shadow: 2px 2px 0px rgba(0,0,0,0.05);
    letter-spacing: -2px;
}

.main-title span {
    display: inline-block;
    opacity: 0;
    animation: slide-in 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
    animation-delay: calc(var(--i) * 50ms);
}

@keyframes slide-in {
    from {
        transform: translateY(50px) rotate(10deg);
        opacity: 0;
    }
    to {
        transform: translateY(0) rotate(0deg);
        opacity: 1;
    }
}


/* --- Button --- */
#recommend-btn {
    padding: 1rem 2rem;
    font-size: 1.2rem;
    font-family: "Pretendard", sans-serif;
    font-weight: 600;
    color: var(--button-text-color);
    background: var(--accent-grad);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2), 0 0 0 0 rgba(229, 46, 113, 0.7);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

#recommend-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2), 0 0 20px 0 rgba(229, 46, 113, 0.5);
}

#recommend-btn:active {
    transform: scale(0.98);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

/* --- Lunch Menu Placeholder --- */
lunch-menu {
    display: block;
    min-height: 200px;
    margin-bottom: 2.5rem;
    transform-style: preserve-3d;
}

/* --- Theme Switcher (no changes) --- */
.theme-switcher-container {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.theme-switcher {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
}

.theme-switcher input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 28px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background: var(--accent-grad);
}

input:checked + .slider:before {
    transform: translateX(22px);
}