/* ===================================
   CSS Reset & Base Styles
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #252525;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --accent: #4a9eff;
    --accent-hover: #6bb0ff;
    --border: #333333;
    --overlay: #252525;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --transition: 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===================================
   Header & Navigation
   =================================== */
.header {
    background-color: var(--bg-secondary);
    padding: var(--spacing-lg) var(--spacing-md);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.site-title {
    font-size: 2.5rem;
    font-weight: 300;
    letter-spacing: 2px;
    margin-bottom: 0.25rem;
}

.site-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 300;
    letter-spacing: 1px;
}

.social-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.social-links a {
    color: var(--text-secondary);
    transition: color var(--transition), transform var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-links a:hover {
    color: var(--accent);
    transform: scale(1.1);
}

.social-links svg {
    width: 24px;
    height: 24px;
}

/* ===================================
   Gallery Container
   =================================== */
.gallery-container {
    flex: 1;
    padding: 50px 25px;
    width: 100%;
}

.gallery {
    display: flex;
    flex-direction: column;
    width: 100%;
}

.gallery-row {
    display: flex;
    flex-direction: row;
    width: 100%;
}

/* Gallery Item */
.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    cursor: pointer;
    background-color: var(--bg-primary);
    transition: transform var(--transition), box-shadow var(--transition);
    flex-shrink: 0;
}

.gallery-item:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    transition: opacity var(--transition);
}

.gallery-item img.loading {
    opacity: 0.3;
}

.gallery-item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.7) 50%, transparent 100%);
    padding: var(--spacing-md);
    transform: translateY(100%);
    transition: transform var(--transition);
}

.gallery-item:hover .gallery-item-overlay {
    transform: translateY(0);
}

.gallery-item-title {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}


/* Loading Indicator */
.loading {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.spinner {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--spacing-md);
    border: 4px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.no-results {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
    font-size: 1.2rem;
}

/* ===================================
   Lightbox Modal
   =================================== */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--overlay);
    z-index: 1000;
    opacity: 0;
    transition: opacity var(--transition);
}

.lightbox.active {
    display: flex;
    opacity: 1;
}

.lightbox-content {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 80px 20px 20px;
}

.lightbox-image-container {
    position: relative;
    display: inline-block;
    max-width: 100%;
    max-height: 100%;
}

.lightbox-image {
    max-width: min(1600px, 100%);
    max-height: min(1200px, 100%);
    object-fit: contain;
}

.lightbox-info {
    position: absolute;
    bottom: var(--spacing-lg);
    left: var(--spacing-lg);
    padding: 0;
    background: none;
    text-align: left;
    max-width: 80%;
}

.lightbox-counter {
    display: none;
}

.lightbox-title {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
}

.lightbox-description {
    color: var(--text-primary);
    line-height: 1.6;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
}

/* Lightbox Controls */
.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: fixed;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 2rem;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1001;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    color: var(--accent);
    transform: scale(1.1);
}

.lightbox-close {
    top: 20px;
    right: 20px;
}

.lightbox-prev {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-prev:hover {
    transform: translateY(-50%) scale(1.1);
}

.lightbox-next {
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next:hover {
    transform: translateY(-50%) scale(1.1);
}

@media (max-width: 768px) {
    .lightbox-prev,
    .lightbox-next {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }

    .lightbox-close {
        width: 40px;
        height: 40px;
        top: 10px;
        right: 10px;
    }

    .lightbox-content {
        padding: 60px 10px 10px;
    }

    .lightbox-image-container {
        max-height: calc(100vh - 250px);
    }
}

/* ===================================
   Footer
   =================================== */
.footer {
    background-color: var(--bg-secondary);
    padding: var(--spacing-lg);
    text-align: center;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    margin-top: var(--spacing-xl);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    .site-title {
        font-size: 2rem;
    }

    .site-subtitle {
        font-size: 0.9rem;
    }

    .header {
        padding: var(--spacing-md);
    }

    .social-links {
        gap: var(--spacing-md);
    }

    .gallery-container {
        padding: 0;
    }

    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 8px;
    }
}

/* ===================================
   Accessibility
   =================================== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}