:root {
    --primary-gradient-start: #000080;
    --primary-gradient-end: #FF00FF;
    --button-color: #FF6B00;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}

body {
    min-height: 100vh;
    color: white;
    position: relative;
    overflow-x: hidden;
}

.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--primary-gradient-start), var(--primary-gradient-end));
    background-size: 400% 400%;
    z-index: -1;
    animation: gradientMove 15s ease infinite;
}

@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    25% { background-position: 100% 50%; }
    50% { background-position: 100% 100%; }
    75% { background-position: 0% 100%; }
    100% { background-position: 0% 50%; }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

h1 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.platform-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.platform-btn {
    background-color: var(--button-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    animation: float 3s ease-in-out infinite;
}

.platform-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(255,107,0,0.4);
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

.info-container {
    background: rgba(0,0,0,0.5);
    border-radius: 15px;
    padding: 2rem;
    backdrop-filter: blur(10px);
}

.format-info {
    margin-bottom: 1.5rem;
}

.format-info h3 {
    color: var(--button-color);
    margin-bottom: 0.5rem;
}

.format-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.detail-item {
    padding: 0.5rem;
    background: rgba(255,255,255,0.1);
    border-radius: 8px;
}

#banner-rotator {
    display: flex;
    justify-content: center;
    margin: 20px auto 40px;
    max-width: 100%;
}

#banner-rotator a {
    display: none;
    width: 100%;
    max-width: 800px;
}

#banner-rotator a img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.search-container {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
}

.search-select {
    padding: 1rem 2rem;
    border-radius: 25px;
    border: none;
    font-size: 1rem;
    min-width: 300px;
    background-color: rgba(255, 255, 255, 0.9);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23000000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 3rem;
}

.search-select:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--button-color);
}

.search-btn {
    background-color: var(--button-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.search-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(255,107,0,0.4);
}

.results-container {
    background: rgba(0,0,0,0.5);
    border-radius: 15px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.results-container.show {
    opacity: 1;
    transform: translateY(0);
}

.recommendation-card {
    background: rgba(255,255,255,0.1);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(255,255,255,0.2);
}

.recommendation-card h3 {
    color: var(--button-color);
    margin-bottom: 1rem;
}

.recommendation-card .highlight {
    background: rgba(255,107,0,0.2);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.tips-list {
    list-style: none;
}

.tips-list li {
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    position: relative;
}

.tips-list li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--button-color);
}

.platform-tag {
    display: inline-block;
    background: rgba(255,107,0,0.3);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    margin: 0.2rem;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    h1 {
        font-size: 1.8rem;
    }

    .platform-btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    .search-select {
        min-width: 250px;
        padding: 0.8rem 1.5rem;
    }
    
    .search-btn {
        padding: 0.8rem 1.5rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }

    .platform-buttons {
        gap: 0.5rem;
    }

    .platform-btn {
        padding: 0.6rem 1rem;
        font-size: 0.8rem;
    }

    .search-select {
        min-width: 200px;
        padding: 0.6rem 1rem;
    }
    
    .search-btn {
        padding: 0.6rem 1rem;
    }
}