/* ===================================
   PORTFOLIO SECTION - Professional Design
   =================================== */

.portfolio {
    background: var(--bg-darker);
    position: relative;
}

.portfolio--modern {
    isolation: isolate;
    overflow: hidden;
}

.portfolio--modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 215, 0, 0.26) 50%, transparent 100%);
    pointer-events: none;
    z-index: 1;
}

.portfolio--modern::after {
    content: '';
    position: absolute;
    width: min(100%, 560px);
    height: 260px;
    top: 12%;
    left: -6%;
    background: radial-gradient(ellipse 68% 68% at 25% 45%, rgba(255, 215, 0, 0.09) 0%, transparent 72%);
    filter: blur(38px);
    pointer-events: none;
    z-index: 0;
}

.portfolio__inner {
    position: relative;
    z-index: 1;
}

.portfolio--modern .section-header {
    text-align: center;
}

.portfolio-eyebrow {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin: 0 0 16px 0;
    max-width: 28rem;
    margin-left: auto;
    margin-right: auto;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

a.portfolio-item {
    text-decoration: none;
    color: inherit;
    display: block;
}

.portfolio-item {
    position: relative;
    border-radius: var(--radius-2xl, 28px);
    overflow: hidden;
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(14px) saturate(150%);
    -webkit-backdrop-filter: blur(14px) saturate(150%);
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: var(--transition);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2),
                inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.portfolio-item:hover {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(16px) saturate(160%);
    -webkit-backdrop-filter: blur(16px) saturate(160%);
    border-color: rgba(255, 215, 0, 0.5);
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(255, 215, 0, 0.4),
                0 2px 0 rgba(255, 215, 0, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.portfolio-image {
    position: relative;
    height: 320px;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.05), rgba(255, 165, 0, 0.03), transparent);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 32px 24px;
    overflow: hidden;
}

.portfolio-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 215, 0, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 215, 0, 0.04) 1px, transparent 1px);
    background-size: 20px 20px;
    z-index: 0;
}

/* Portfolio Icon */
.portfolio-icon {
    position: relative;
    z-index: 1;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 215, 0, 0.1);
    border: 2px solid rgba(255, 215, 0, 0.4);
    border-radius: var(--radius-xl, 24px);
    transition: var(--transition);
}

.portfolio-icon svg {
    width: 40px;
    height: 40px;
    color: var(--primary);
    stroke-width: 1.5;
}

.portfolio-item:hover .portfolio-icon {
    transform: scale(1.15) rotate(-8deg);
    background: rgba(255, 215, 0, 0.15);
    border-color: var(--primary);
    box-shadow: 0 8px 24px rgba(255, 215, 0, 0.5);
}

/* Tech Stack */
.portfolio-tech-stack {
    position: relative;
    z-index: 1;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
}

.tech-badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 20px;
    color: var(--primary);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: var(--transition);
}

.tech-badge:hover {
    background: rgba(255, 215, 0, 0.15);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 215, 0, 0.4);
}

/* Metrics */
.portfolio-metrics {
    position: relative;
    z-index: 1;
    display: flex;
    gap: 24px;
    padding-top: 12px;
}

.metric {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.metric-value {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.metric-label {
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.portfolio-item:hover .metric-value {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.95), rgba(255, 165, 0, 0.90));
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 32px;
    opacity: 0;
    transition: var(--transition);
    text-align: center;
    z-index: 10;
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-overlay h3 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    color: white;
    margin: 0;
}

.portfolio-overlay p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 15px;
    margin: 0;
}

.portfolio-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: white;
    color: var(--primary);
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

.portfolio-btn svg {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

.portfolio-btn:hover {
    transform: scale(1.05);
}

.portfolio-btn:hover svg {
    transform: translateX(4px);
}

.portfolio-info {
    padding: 24px;
}

.portfolio-category {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.1), rgba(255, 165, 0, 0.1));
    border: 1px solid rgba(255, 215, 0, 0.2);
    border-radius: 20px;
    color: var(--secondary-light);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.portfolio-title {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.portfolio-link-hint {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 10px;
    font-size: 13px;
    font-weight: 600;
    color: var(--secondary-light);
    opacity: 0.9;
}

a.portfolio-item:hover .portfolio-link-hint {
    color: var(--primary);
}

/* Responsive */
@media (max-width: 1024px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile - Single Column */
@media (max-width: 768px) {
    .portfolio--modern::after {
        display: none;
    }

    .portfolio-eyebrow {
        font-size: 11px;
        letter-spacing: 0.12em;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .portfolio-item {
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
        background: rgba(255, 255, 255, 0.05) !important;
    }
    
    .portfolio-item:hover {
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
        background: rgba(255, 255, 255, 0.08) !important;
    }
    
    .portfolio-image {
        height: 340px;
        padding: 32px 20px;
        gap: 16px;
    }
    
    .portfolio-icon {
        width: 80px;
        height: 80px;
        flex-shrink: 0;
    }
    
    .portfolio-icon svg {
        width: 40px;
        height: 40px;
    }
    
    .portfolio-tech-stack {
        justify-content: center;
        max-width: 100%;
    }
    
    .portfolio-metrics {
        gap: 12px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .metric-item {
        min-width: 100px;
    }
    
    .metric-value {
        font-size: 20px;
    }
    
    .metric-label {
        font-size: 12px;
    }
    
    .tech-badge {
        font-size: 11px;
        padding: 6px 14px;
    }
    
    .portfolio-info {
        text-align: center;
        padding: 20px 16px;
    }
    
    .portfolio-title {
        font-size: 18px;
    }
    
    .portfolio-description {
        font-size: 14px;
        line-height: 1.6;
    }
}

/* Extra Small Mobile */
@media (max-width: 480px) {
    .portfolio-grid {
        gap: 20px;
    }
    
    .portfolio-image {
        height: 360px;
        padding: 28px 16px;
        gap: 14px;
    }
    
    .portfolio-icon {
        width: 70px;
        height: 70px;
    }
    
    .portfolio-icon svg {
        width: 36px;
        height: 36px;
    }
    
    .tech-badge {
        font-size: 10px;
        padding: 5px 12px;
    }
    
    .metric-value {
        font-size: 18px;
    }
    
    .portfolio-title {
        font-size: 17px;
    }
    
    .portfolio-description {
        font-size: 13px;
    }
}