/* ========================================
   USAMA'S PORTFOLIO PLUGIN - LUXURY DESIGN
   ======================================== */

:root {
    /* Color Palette - Matching Usama's Website */
    --us-primary: #1f2937;
    --us-secondary: #111827;
    --us-accent: #3b82f6;
    --us-light: #f9fafb;
    --us-gray: #6b7280;
    --us-border: #e5e7eb;
    --us-success: #10b981;
    
    /* Typography */
    --us-font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
    --us-font-weight-light: 300;
    --us-font-weight-regular: 400;
    --us-font-weight-medium: 500;
    --us-font-weight-bold: 600;
    --us-font-weight-black: 700;
    
    /* Spacing */
    --us-spacing-xs: 8px;
    --us-spacing-sm: 12px;
    --us-spacing-md: 16px;
    --us-spacing-lg: 24px;
    --us-spacing-xl: 32px;
    --us-spacing-2xl: 48px;
    
    /* Border Radius */
    --us-radius-sm: 4px;
    --us-radius-md: 8px;
    --us-radius-lg: 12px;
    --us-radius-xl: 16px;
    
    /* Transitions */
    --us-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   BASE STYLES
   ======================================== */

.us-portfolio-container {
    width: 100%;
    padding: var(--us-spacing-lg);
    margin: var(--us-spacing-xl) 0;
}

.us-portfolio-container * {
    box-sizing: border-box;
}

/* ========================================
   FILTER SECTION - LUXURY STYLE
   ======================================== */

.us-portfolio-filter-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: var(--us-spacing-2xl);
    animation: fadeInDown 0.6s ease-out;
}

.us-portfolio-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--us-spacing-md);
    justify-content: center;
    background: var(--us-light);
    padding: var(--us-spacing-lg);
    border-radius: var(--us-radius-xl);
    border: 1px solid var(--us-border);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.us-portfolio-filter-btn {
    background: white;
    border: 2px solid var(--us-border);
    color: var(--us-primary);
    padding: var(--us-spacing-sm) var(--us-spacing-lg);
    border-radius: var(--us-radius-lg);
    cursor: pointer;
    font-size: 14px;
    font-weight: var(--us-font-weight-medium);
    letter-spacing: 0.3px;
    transition: var(--us-transition);
    text-transform: uppercase;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.us-portfolio-filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--us-accent);
    transition: left 0.3s ease;
    z-index: -1;
}

.us-portfolio-filter-btn:hover::before {
    left: 0;
}

.us-portfolio-filter-btn:hover,
.us-portfolio-filter-btn.active {
    background: var(--us-accent);
    color: white;
    border-color: var(--us-accent);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
    transform: translateY(-2px);
}

.us-portfolio-filter-btn span {
    display: block;
    position: relative;
    z-index: 1;
}

/* ========================================
   GRID LAYOUT
   ======================================== */

.us-portfolio-grid {
    display: grid;
    gap: var(--us-spacing-xl);
    margin-bottom: var(--us-spacing-xl);
    animation: fadeIn 0.8s ease-out 0.2s both;
}

.us-portfolio-grid[data-columns="2"] {
    grid-template-columns: repeat(auto-fill, minmax(450px, 1fr));
}

.us-portfolio-grid[data-columns="3"] {
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
}

.us-portfolio-grid[data-columns="4"] {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* ========================================
   CARD STYLES - LUXURY
   ======================================== */

.us-portfolio-card {
    height: 100%;
    animation: fadeInUp 0.6s ease-out;
    position: relative;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.us-portfolio-card.filtered-out {
    display: none;
    opacity: 0;
}

.us-portfolio-card-inner {
    height: 100%;
    background: white;
    border-radius: var(--us-radius-xl);
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: var(--us-transition);
    display: flex;
    flex-direction: column;
    position: relative;
    border: 1px solid var(--us-border);
}

.us-portfolio-card-inner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--us-accent), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.us-portfolio-card:hover .us-portfolio-card-inner {
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    transform: translateY(-8px);
    border-color: var(--us-accent);
}

.us-portfolio-card:hover .us-portfolio-card-inner::before {
    opacity: 1;
}

/* Image Section */
.us-portfolio-card-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 10;
    background: var(--us-gray);
}

.us-portfolio-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--us-transition);
    display: block;
}

.us-portfolio-card:hover .us-portfolio-card-image img {
    transform: scale(1.05);
}

/* Overlay */
.us-portfolio-card-overlay {
    position: absolute;
    inset: 0;
    background: rgba(31, 41, 55, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--us-transition);
    backdrop-filter: blur(4px);
}

.us-portfolio-card:hover .us-portfolio-card-overlay {
    opacity: 1;
}

.us-portfolio-card-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--us-spacing-sm);
    color: white;
    text-decoration: none;
    font-weight: var(--us-font-weight-medium);
    padding: var(--us-spacing-md) var(--us-spacing-xl);
    border: 2px solid white;
    border-radius: var(--us-radius-lg);
    transition: var(--us-transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 13px;
    transform: scale(0.95);
    opacity: 0;
}

.us-portfolio-card:hover .us-portfolio-card-link {
    transform: scale(1);
    opacity: 1;
    background: white;
    color: var(--us-primary);
}

/* Content Section */
.us-portfolio-card-content {
    padding: var(--us-spacing-lg);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    justify-content: space-between;
}

/* Category Tags */
.us-portfolio-card-category {
    display: flex;
    flex-wrap: wrap;
    gap: var(--us-spacing-xs);
    margin-bottom: var(--us-spacing-md);
}

.us-portfolio-tag {
    display: inline-block;
    background: linear-gradient(135deg, var(--us-accent), rgba(59, 130, 246, 0.8));
    color: white;
    padding: 4px 12px;
    border-radius: var(--us-radius-md);
    font-size: 11px;
    font-weight: var(--us-font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.2);
}

/* Title */
.us-portfolio-card-title {
    margin: 0 0 var(--us-spacing-md) 0;
    font-size: 18px;
    font-weight: var(--us-font-weight-bold);
    color: var(--us-primary);
    line-height: 1.4;
    transition: var(--us-transition);
}

.us-portfolio-card-title a {
    color: inherit;
    text-decoration: none;
}

.us-portfolio-card:hover .us-portfolio-card-title a {
    color: var(--us-accent);
}

/* Meta Information */
.us-portfolio-card-meta {
    display: flex;
    flex-direction: column;
    gap: var(--us-spacing-sm);
    margin-bottom: var(--us-spacing-lg);
    padding-bottom: var(--us-spacing-lg);
    border-bottom: 1px solid var(--us-border);
}

.us-portfolio-meta-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
}

.us-portfolio-meta-label {
    color: var(--us-gray);
    font-weight: var(--us-font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.us-portfolio-meta-value {
    color: var(--us-primary);
    font-weight: var(--us-font-weight-bold);
}

/* Button */
.us-portfolio-card-button {
    display: inline-block;
    background: linear-gradient(135deg, var(--us-accent), rgba(59, 130, 246, 0.9));
    color: white;
    padding: 10px 20px;
    border-radius: var(--us-radius-lg);
    text-decoration: none;
    font-weight: var(--us-font-weight-medium);
    font-size: 13px;
    transition: var(--us-transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    align-self: flex-start;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.us-portfolio-card-button:hover {
    transform: translateX(4px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

/* ========================================
   SINGLE CASE STUDY PAGE
   ======================================== */

.us-portfolio-single-hero {
    background: linear-gradient(135deg, var(--us-secondary) 0%, var(--us-primary) 100%);
    color: white;
    padding: var(--us-spacing-2xl) var(--us-spacing-lg);
    margin-bottom: var(--us-spacing-2xl);
    border-radius: var(--us-radius-xl);
}

.us-portfolio-single-hero-content {
    max-width: 1200px;
    margin: 0 auto;
}

.us-portfolio-single-hero h1 {
    font-size: 48px;
    font-weight: var(--us-font-weight-black);
    margin: 0 0 var(--us-spacing-lg) 0;
    line-height: 1.2;
}

.us-portfolio-single-hero-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--us-spacing-lg);
    margin-top: var(--us-spacing-lg);
}

.us-portfolio-single-meta-item {
    background: rgba(255, 255, 255, 0.1);
    padding: var(--us-spacing-md);
    border-radius: var(--us-radius-lg);
    backdrop-filter: blur(10px);
}

.us-portfolio-single-meta-item strong {
    display: block;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.8;
    margin-bottom: var(--us-spacing-xs);
}

.us-portfolio-single-meta-item span {
    display: block;
    font-size: 18px;
    font-weight: var(--us-font-weight-bold);
}

.us-portfolio-single-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--us-spacing-lg);
}

.us-portfolio-single-section {
    margin-bottom: var(--us-spacing-2xl);
}

.us-portfolio-single-section h2 {
    font-size: 32px;
    font-weight: var(--us-font-weight-bold);
    color: var(--us-primary);
    margin-bottom: var(--us-spacing-lg);
    position: relative;
    padding-bottom: var(--us-spacing-md);
}

.us-portfolio-single-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--us-accent);
    border-radius: var(--us-radius-sm);
}

.us-portfolio-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--us-spacing-lg);
    margin: var(--us-spacing-xl) 0;
}

.us-portfolio-gallery-item {
    border-radius: var(--us-radius-lg);
    overflow: hidden;
    aspect-ratio: 16 / 10;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: var(--us-transition);
}

.us-portfolio-gallery-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}

.us-portfolio-gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--us-transition);
}

.us-portfolio-gallery-item:hover img {
    transform: scale(1.05);
}

.us-portfolio-single-description,
.us-portfolio-single-results {
    font-size: 16px;
    line-height: 1.8;
    color: var(--us-gray);
    margin: var(--us-spacing-lg) 0;
}

.us-portfolio-single-description p,
.us-portfolio-single-results p {
    margin-bottom: var(--us-spacing-md);
}

.us-portfolio-results-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--us-spacing-lg);
    margin: var(--us-spacing-lg) 0;
}

.us-portfolio-result-item {
    background: var(--us-light);
    padding: var(--us-spacing-lg);
    border-radius: var(--us-radius-lg);
    border-left: 4px solid var(--us-accent);
    transition: var(--us-transition);
}

.us-portfolio-result-item:hover {
    transform: translateX(5px);
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.us-portfolio-result-item strong {
    display: block;
    color: var(--us-primary);
    font-size: 18px;
    margin-bottom: var(--us-spacing-xs);
}

.us-portfolio-project-url {
    display: inline-block;
    margin: var(--us-spacing-xl) 0;
    padding: var(--us-spacing-md) var(--us-spacing-lg);
    background: var(--us-accent);
    color: white;
    text-decoration: none;
    border-radius: var(--us-radius-lg);
    font-weight: var(--us-font-weight-medium);
    transition: var(--us-transition);
}

.us-portfolio-project-url:hover {
    transform: translateX(4px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

/* ========================================
   ANIMATIONS
   ======================================== */

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

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   NO POSTS MESSAGE
   ======================================== */

.us-portfolio-no-posts {
    text-align: center;
    padding: var(--us-spacing-2xl) var(--us-spacing-lg);
    color: var(--us-gray);
    font-size: 18px;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
    .us-portfolio-container {
        padding: var(--us-spacing-md);
        margin: var(--us-spacing-lg) 0;
    }
    
    .us-portfolio-grid[data-columns="2"],
    .us-portfolio-grid[data-columns="3"],
    .us-portfolio-grid[data-columns="4"] {
        grid-template-columns: 1fr;
    }
    
    .us-portfolio-filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .us-portfolio-filter-btn {
        width: 100%;
        text-align: center;
    }
    
    .us-portfolio-single-hero h1 {
        font-size: 36px;
    }
    
    .us-portfolio-single-section h2 {
        font-size: 24px;
    }
    
    .us-portfolio-single-hero-meta {
        grid-template-columns: 1fr;
    }
    
    .us-portfolio-results-list {
        grid-template-columns: 1fr;
    }
    
    .us-portfolio-gallery {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .us-portfolio-single-hero {
        padding: var(--us-spacing-lg) var(--us-spacing-md);
    }
    
    .us-portfolio-single-hero h1 {
        font-size: 28px;
    }
    
    .us-portfolio-card-meta {
        flex-direction: column;
    }
}