/* Modern glassmorphism design system */
:root {
    --primary: #6e45e2;
    --secondary: #88d3ce;
    --glass-light: rgba(255, 255, 255, 0.2);
    --glass-dark: rgba(0, 0, 0, 0.1);
    --glass-border: rgba(255, 255, 255, 0.3);
    --text-light: #ffffff;
    --text-dark: #333333;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

/* Smooth gradient animation */
@keyframes gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

body {
    background: linear-gradient(-45deg, #6e45e2, #88d3ce, #ff7e5f, #feb47b);
    background-size: 400% 400%;
    animation: gradient 15s ease infinite;
    color: var(--text-light);
    font-family: 'Poppins', sans-serif;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
    box-sizing: border-box;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Glassmorphism logo container */
.logo-glass {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    background: var(--glass-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 50%;
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
}

.logo {
    width: 60px;
    height: 60px;
    filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.3));
}

/* Typography with Poppins */
.heading {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeIn 1s ease;
}

.heading h1 {
    font-size: 2.8rem;
    margin: 0;
    font-weight: 700;
    background: linear-gradient(to right, #fff, #ddd);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.heading p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-top: 0.5rem;
    font-weight: 300;
    letter-spacing: 1px;
}

/* Glassmorphism search form */
#search-form {
    display: flex;
    max-width: 600px;
    margin: 0 auto;
    border-radius: 50px;
    overflow: hidden;
    background: var(--glass-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

#search-form:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

#search-box {
    flex: 1;
    padding: 15px 25px;
    border: none;
    font-size: 1rem;
    outline: none;
    background: transparent;
    color: var(--text-light);
    font-family: 'Poppins', sans-serif;
}

#search-box::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

/* Glassmorphism buttons */
.glass-button {
    background: var(--glass-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 15px 25px;
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
}

.glass-button:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Premium loading spinner */
.loader-container {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 2rem auto;
    text-align: center;
}

.premium-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--text-light);
    animation: spin 1s ease-in-out infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Results grid with hover overlay */
#search-result {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    margin: 3rem 0;
    padding: 0 10px;
}

.image-container {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.image-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

#search-result img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    display: block;
    transition: all 0.3s ease;
}

/* Image hover overlay effect */
.image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    padding: 20px;
    color: white;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.image-container:hover .image-overlay {
    transform: translateY(0);
}

.photographer-name {
    font-weight: 500;
    font-size: 0.9rem;
}

.download-link {
    color: white;
    text-decoration: none;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: color 0.3s ease;
}

.download-link:hover {
    color: var(--secondary);
}

/* Explore more button */
#show-more-btn {
    display: none;
    margin: 3rem auto;
    border-radius: 50px;
}

/* Back to top button */
#back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--glass-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 99;
}

#back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

#back-to-top:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
}

/* No results message */
.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 2rem;
    background: var(--glass-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 15px;
    margin: 2rem 0;
}

/* Responsive design */
@media (max-width: 768px) {
    .heading h1 {
        font-size: 2rem;
    }
    
    .heading p {
        font-size: 1rem;
    }
    
    #search-form {
        flex-direction: column;
        background: transparent;
        backdrop-filter: none;
        border: none;
        box-shadow: none;
        gap: 10px;
    }
    
    #search-box {
        background: var(--glass-light);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border: 1px solid var(--glass-border);
        border-radius: 50px;
    }
    
    #search-result {
        grid-template-columns: 1fr;
    }
    
    .logo-glass {
        width: 80px;
        height: 80px;
    }
    
    .logo {
        width: 50px;
        height: 50px;
    }
}

/* Animation for fade in */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}