* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Icons", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    max-width: 1200px;
    width: 100%;
    padding: 40px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from { 
        opacity: 0;
        transform: translateY(40px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

.title {
    text-align: center;
    color: #2d3436;
    margin-bottom: 40px;
    font-size: 2.8em;
    font-weight: 500;
    letter-spacing: -0.5px;
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.input-container {
    max-width: 800px;
    margin: 0 auto 50px;
    display: flex;
    gap: 15px;
    animation: slideIn 0.6s ease-out 0.3s both;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.url-input {
    flex: 1;
    padding: 18px 25px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 400;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.url-input:focus {
    outline: none;
    border-color: #0084ff;
    box-shadow: 0 0 0 4px rgba(0, 132, 255, 0.1);
    background: white;
}

.grab-btn {
    padding: 18px 35px;
    background: #0084ff;
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: -0.2px;
    transition: all 0.3s ease;
}

.grab-btn:hover {
    background: #0066cc;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 132, 255, 0.2);
}

.grab-btn:active {
    transform: translateY(0);
}

.thumbnail-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    padding: 20px 0;
}

.thumbnail-card {
    background: white;
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    animation: cardFadeIn 0.5s ease-out backwards;
}

.thumbnail-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.thumbnail-card img {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 15px;
    transition: transform 0.3s ease;
}

.thumbnail-card img:hover {
    transform: scale(1.02);
}

.thumbnail-card .resolution {
    color: #636e72;
    font-size: 15px;
    margin-bottom: 15px;
    font-weight: 400;
    letter-spacing: -0.2px;
}

.download-btn {
    display: block;
    width: 100%;
    padding: 12px;
    background: #00b894;
    color: white;
    text-align: center;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    letter-spacing: -0.2px;
    transition: all 0.3s ease;
}

.download-btn:hover {
    background: #00a187;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 184, 148, 0.2);
}

@media (max-width: 768px) {
    .container {
        padding: 20px;
    }
    
    .input-container {
        flex-direction: column;
    }
    
    .title {
        font-size: 2em;
    }
    
    .grab-btn {
        width: 100%;
    }
    
    .thumbnail-container {
        grid-template-columns: 1fr;
    }
}

/* Advertisement Slots */
.ad-slot {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 20px;
    margin: 20px 0;
    text-align: center;
    position: relative;
    min-height: 90px;
}

.ad-label {
    position: absolute;
    top: 5px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 11px;
    color: #999;
    letter-spacing: 1px;
}

.ad-top {
    margin-bottom: 30px;
}

.ad-bottom {
    margin-top: 40px;
}

/* Footer Styles */
.footer {
    margin-top: 40px;
    padding: 20px 0;
    text-align: center;
    border-top: 1px solid #eee;
}

.footer p {
    color: #666;
    font-size: 14px;
}

.footer a {
    color: #0084ff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: #0056b3;
    text-decoration: underline;
}

@media (max-width: 768px) {
    .ad-slot {
        margin: 15px 0;
    }
    
    .footer {
        margin-top: 30px;
        padding: 15px 0;
    }
}

.ad-sidebar {
    float: right;
    width: 300px;
    min-height: 250px;
    margin-left: 20px;
    margin-bottom: 20px;
}

.ad-bottom {
    min-height: 90px;
    margin-top: 40px;
    clear: both;
}

@media (max-width: 768px) {
    .ad-sidebar {
        float: none;
        width: 100%;
        margin: 20px 0;
    }
}