@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-primary: #0b0f19;
    --bg-secondary: rgba(17, 24, 39, 0.7);
    --bg-card: rgba(31, 41, 55, 0.4);
    --border-glass: rgba(255, 255, 255, 0.08);
    --border-glass-hover: rgba(255, 255, 255, 0.15);
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --accent-primary: #8b5cf6;
    --accent-secondary: #3b82f6;
    --accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #3b82f6 100%);
    --accent-glow: rgba(139, 92, 246, 0.3);
    
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    --shadow-sm: 0 2px 8px -2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 16px 40px -8px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 0 25px -5px var(--accent-glow);
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-primary);
    background-image: 
        radial-gradient(at 0% 0%, rgba(139, 92, 246, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(59, 130, 246, 0.15) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: var(--font-body);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    border: 2px solid var(--bg-primary);
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Container */
.app-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* Header Section */
header {
    text-align: center;
    margin-bottom: 3.5rem;
    position: relative;
}

.logo-container {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.logo-icon {
    font-size: 2.25rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: pulse 3s infinite ease-in-out;
}

h1 {
    font-family: var(--font-heading);
    font-size: 2.75rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, #ffffff 30%, #e0e7ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0.5rem auto 0;
}

/* Search Bar Section */
.search-wrapper {
    max-width: 700px;
    margin: 0 auto 2.5rem;
    position: relative;
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-secondary);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 0.5rem;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.search-box:focus-within {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow), var(--shadow-lg);
}

.search-icon {
    color: var(--text-muted);
    margin-left: 1.25rem;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
}

.search-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1.1rem;
    padding: 0.75rem 1rem;
    width: 100%;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-btn {
    background: var(--accent-gradient);
    border: none;
    outline: none;
    color: white;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    padding: 0.85rem 1.75rem;
    border-radius: calc(var(--radius-lg) - 4px);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
}

.search-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.search-btn:active {
    transform: translateY(1px);
}

/* Quick Tags */
.quick-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
}

.tag-btn {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    padding: 0.4rem 1rem;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

.tag-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-glass-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

/* Control Panel (Filters & Stats) */
.control-panel {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 2rem;
    background: var(--bg-secondary);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 1rem 1.5rem;
    opacity: 0;
    transform: translateY(10px);
    transition: var(--transition-normal);
}

.control-panel.visible {
    opacity: 1;
    transform: translateY(0);
}

.stats-container {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.stats-count {
    font-weight: 700;
    color: var(--accent-primary);
}

.filters-container {
    display: flex;
    gap: 0.5rem;
}

.filter-btn {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.filter-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.03);
}

.filter-btn.active {
    background: rgba(139, 92, 246, 0.1);
    border-color: rgba(139, 92, 246, 0.3);
    color: #a78bfa;
}

/* Grid Layout */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.5rem;
}

/* Image Card */
.image-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    aspect-ratio: 1;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    animation: fadeIn 0.5s ease-out both;
}

.image-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-glass-hover);
    box-shadow: var(--shadow-md);
}

/* Chessboard pattern for transparent PNG background */
.image-card-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(45deg, #161c2a 25%, transparent 25%), 
        linear-gradient(-45deg, #161c2a 25%, transparent 25%), 
        linear-gradient(45deg, transparent 75%, #161c2a 75%), 
        linear-gradient(-45deg, transparent 75%, #161c2a 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    z-index: 1;
}

.image-card img {
    max-width: 85%;
    max-height: 85%;
    object-fit: contain;
    z-index: 2;
    transition: var(--transition-slow);
}

.image-card:hover img {
    transform: scale(1.08);
}

/* Info overlay on hover */
.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(11, 15, 25, 0.9) 0%, rgba(11, 15, 25, 0.4) 60%, rgba(11, 15, 25, 0.1) 100%);
    z-index: 3;
    opacity: 0;
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 1.25rem;
}

.image-card:hover .card-overlay {
    opacity: 1;
}

.card-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.badge {
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.badge-png {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #34d399;
}

.badge-product {
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: #60a5fa;
}

.badge-other {
    background: rgba(107, 114, 128, 0.15);
    border: 1px solid rgba(107, 114, 128, 0.3);
    color: #9ca3af;
}

.source-tag {
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    padding: 0.3rem 0.6rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.card-bottom {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    flex: 1;
    border: none;
    outline: none;
    padding: 0.65rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    font-family: var(--font-heading);
    transition: var(--transition-fast);
}

.action-btn-download {
    background: var(--accent-gradient);
    color: white;
}

.action-btn-download:hover {
    box-shadow: 0 0 12px rgba(139, 92, 246, 0.4);
    transform: translateY(-1px);
}

.action-btn-view {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.action-btn-view:hover {
    background: rgba(255, 255, 255, 0.18);
}

/* Skeleton Loading Shimmer */
.skeleton-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    aspect-ratio: 1;
    position: relative;
    overflow: hidden;
}

.skeleton-card::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    transform: translateX(-100%);
    background-image: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.03) 20%,
        rgba(255, 255, 255, 0.08) 60%,
        rgba(255, 255, 255, 0) 100%
    );
    animation: shimmer 1.5s infinite;
}

/* Empty/Error State */
.state-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: 5rem 2rem;
    background: var(--bg-secondary);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    max-width: 600px;
    margin: 2rem auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    animation: fadeIn 0.4s ease-out;
}

.state-icon {
    font-size: 3.5rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.state-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
}

.state-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Lightbox Modal */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(7, 10, 18, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.lightbox.active {
    opacity: 1;
    pointer-events: all;
}

.lightbox-content {
    max-width: 90%;
    max-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.lightbox.active .lightbox-content {
    transform: scale(1);
}

.lightbox-content-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(45deg, #1c2333 25%, transparent 25%), 
        linear-gradient(-45deg, #1c2333 25%, transparent 25%), 
        linear-gradient(45deg, transparent 75%, #1c2333 75%), 
        linear-gradient(-45deg, transparent 75%, #1c2333 75%);
    background-size: 30px 30px;
    background-position: 0 0, 0 15px, 15px -15px, -15px 0px;
    border-radius: var(--radius-md);
    z-index: 1;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: var(--radius-md);
    z-index: 2;
    box-shadow: var(--shadow-lg);
}

.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    color: white;
    width: 3.5rem;
    height: 3.5rem;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.25rem;
    transition: var(--transition-fast);
    z-index: 1001;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: rotate(90deg);
}

.lightbox-actions {
    position: absolute;
    bottom: -4rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
    z-index: 1001;
}

.lightbox-btn {
    background: var(--accent-gradient);
    border: none;
    outline: none;
    color: white;
    padding: 0.75rem 2rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: var(--font-heading);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition-fast);
}

.lightbox-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
}

.lightbox-btn-source {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-glass);
}

.lightbox-btn-source:hover {
    background: rgba(255, 255, 255, 0.15);
    box-shadow: none;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shimmer {
    100% {
        transform: translateX(100%);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

/* Responsive Rules */
@media (max-width: 768px) {
    h1 {
        font-size: 2.2rem;
    }
    .control-panel {
        flex-direction: column;
        align-items: stretch;
        padding: 1rem;
    }
    .filters-container {
        overflow-x: auto;
        padding-bottom: 0.25rem;
    }
    .filter-btn {
        flex: 1;
        text-align: center;
        padding: 0.5rem 0.75rem;
    }
    .lightbox-close {
        top: 1rem;
        right: 1rem;
        width: 3rem;
        height: 3rem;
    }
}

@media (max-width: 600px) {
    .app-container {
        padding: 1rem 0.5rem;
    }
    
    header {
        margin-bottom: 2rem;
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    header p {
        font-size: 0.95rem;
    }
    
    .search-wrapper {
        margin-bottom: 1.5rem;
    }
    
    .search-box {
        border-radius: var(--radius-md);
        padding: 0.25rem;
    }
    
    .search-input {
        font-size: 0.95rem;
        padding: 0.5rem 0.75rem;
    }
    
    .search-btn {
        padding: 0.6rem 1.25rem;
        font-size: 0.95rem;
        border-radius: calc(var(--radius-md) - 4px);
    }
    
    .quick-tags {
        margin-top: 0.75rem;
        gap: 0.5rem;
    }
    
    .tag-btn {
        padding: 0.3rem 0.75rem;
        font-size: 0.75rem;
    }
    
    .control-panel {
        padding: 0.75rem;
        margin-bottom: 1.5rem;
        gap: 0.75rem;
    }
    
    .stats-container {
        font-size: 0.85rem;
        text-align: center;
    }
    
    /* Instagram-style 3-column square grid */
    .results-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 4px; /* Small clean gap like Instagram */
    }
    
    .image-card {
        border-radius: 4px;
        border: none;
        box-shadow: none;
        background: var(--bg-card);
    }
    
    .image-card img {
        max-width: 90%;
        max-height: 90%;
        object-fit: contain;
    }
    
    /* Hide card overlays on mobile so tap opens the lightbox directly */
    .card-overlay {
        display: none !important;
    }
    
    /* Lightbox mobile adjustments */
    .lightbox-content img {
        max-height: 60vh;
        border-radius: var(--radius-sm);
    }
    
    .lightbox-close {
        top: 1rem;
        right: 1rem;
        width: 2.75rem;
        height: 2.75rem;
        font-size: 1rem;
    }
    
    .lightbox-actions {
        bottom: -4.5rem;
        width: 100%;
        justify-content: center;
        padding: 0 0.5rem;
        gap: 0.5rem;
    }
    
    .lightbox-btn {
        flex: 1;
        justify-content: center;
        padding: 0.6rem 0.75rem;
        font-size: 0.85rem;
    }
}