/* ===== PORTFOLIO PAGE STYLES ===== */

/* Portfolio Hero Section */
.portfolio-hero {
    min-height: 40vh;
    background: var(--gradient-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 8rem 0 4rem;
    margin-top: 80px;
}

.portfolio-hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 2rem;
}

.portfolio-title {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--text-white) 0%, var(--accent-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.portfolio-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    color: var(--text-gray);
    line-height: 1.6;
    max-width: 700px;
    margin: 0 auto;
}

/* Portfolio Grid */
.portfolio-grid {
    padding: 6rem 0;
    background: var(--bg-darker);
}

.portfolio-grid .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    grid-auto-flow: row dense;
}

/* Portfolio Items */
.portfolio-item {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 2.5rem;
    border: 1px solid var(--border-gray);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.portfolio-item.large {
    grid-column: span 2;
}

.portfolio-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-warm);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.portfolio-item:hover::before {
    transform: scaleX(1);
}

.portfolio-item:hover {
    transform: translateY(-5px);
    background: var(--bg-card-hover);
    box-shadow: 0 15px 40px var(--shadow-dark);
}

/* Portfolio Content */
.portfolio-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.portfolio-content p {
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

/* Portfolio Logos */
.portfolio-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    min-height: 80px;
}

.portfolio-logos img {
    height: 60px;
    width: auto;
    object-fit: contain;
}

.logo-placeholder {
    background: var(--gradient-warm);
    color: var(--bg-darker);
    padding: 1.5rem 2rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.4rem;
    text-align: center;
    min-width: 120px;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-placeholder.sig {
    background: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
    color: white;
    font-size: 1.2rem;
    font-weight: 900;
}

.logo-placeholder.kobelco {
    background: linear-gradient(135deg, #FF5722 0%, #D84315 100%);
    color: white;
    font-size: 0.9rem;
}

.logo-placeholder.jatelindo {
    background: linear-gradient(135deg, #4CAF50 0%, #388E3C 100%);
    color: white;
    font-size: 0.8rem;
}

.logo-placeholder.xlaxiata {
    background: linear-gradient(135deg, #E91E63 0%, #C2185B 100%);
    color: white;
    font-size: 0.8rem;
}

/* Portfolio Images */
.portfolio-image {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    min-height: 100px;
}

.image-placeholder {
    background: var(--bg-darker);
    border: 2px solid var(--border-gray);
    border-radius: 15px;
    width: 120px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--accent-gold);
    transition: all 0.3s ease;
}

.image-placeholder:hover {
    transform: scale(1.05);
    border-color: var(--accent-gold);
    box-shadow: 0 8px 25px rgba(212, 175, 55, 0.3);
}

/* Tech Tags */
.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: auto;
}

.tech-tags .tag {
    background: rgba(139, 90, 60, 0.1);
    color: var(--accent-copper);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(139, 90, 60, 0.3);
    transition: all 0.3s ease;
}

.tech-tags .tag:hover {
    background: rgba(139, 90, 60, 0.2);
    transform: translateY(-1px);
}

/* Core Engine Section Specific Styles */
.core-engine-section {
    grid-column: span 2;
}

.core-engine-section .section-description {
    color: var(--text-gray);
    font-size: 1rem;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.core-engine-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 1.5rem;
    width: 100%;
    overflow: hidden;
}

.sub-portfolio-item {
    background: var(--bg-darker);
    border: 1px solid var(--border-gray);
    border-radius: 15px;
    padding: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.sub-portfolio-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-warm);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.sub-portfolio-item:hover::before {
    transform: scaleX(1);
}

.sub-portfolio-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-color: var(--accent-copper);
}

.sub-portfolio-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    min-height: 80px;
    width: 100%;
    overflow: hidden;
    flex-wrap: wrap;
}

.partner-logo {
    height: 50px;
    width: auto;
    max-width: 120px;
    object-fit: contain;
    filter: brightness(1.1) contrast(1.1);
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.partner-logo:hover {
    transform: scale(1.05);
    filter: brightness(1.2) contrast(1.2);
}

.icon-placeholder {
    width: 60px;
    height: 60px;
    background: var(--gradient-warm);
    color: var(--bg-darker);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: bold;
    transition: all 0.3s ease;
}

.icon-placeholder:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.3);
}

.sub-portfolio-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.sub-portfolio-item p {
    color: var(--text-gray);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.tech-tags.mini {
    margin-top: 0.5rem;
}

.tech-tags.mini .tag {
    font-size: 0.7rem;
    padding: 0.3rem 0.6rem;
}

/* Portfolio CTA Section */
.portfolio-cta {
    background: var(--bg-dark);
    padding: 6rem 0;
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
    padding: 0 2rem;
}

.cta-content h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.cta-content p {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 2.5rem;
}

/* Active Navigation Link - Remove portfolio-specific styles to use main styles.css navigation */

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Improved accessibility */
.portfolio-item:focus {
    outline: 2px solid var(--accent-gold);
    outline-offset: 2px;
}

.sub-portfolio-item:focus {
    outline: 2px solid var(--accent-copper);
    outline-offset: 2px;
}

/* Enhanced hover states */
.portfolio-item:hover .tech-tags .tag {
    transform: translateY(-1px);
}

.sub-portfolio-item:hover .tech-tags.mini .tag {
    background: rgba(139, 90, 60, 0.3);
}

/* Improved responsive design for Core Engine grid */
@media (max-width: 900px) {
    .core-engine-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .core-engine-section {
        grid-column: span 1;
    }
}

/* Tablet responsive */
@media (max-width: 1024px) {
    .portfolio-grid .container {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }
    
    .portfolio-item.large {
        grid-column: span 1;
    }
    
    /* Ensure mobile menu is visible on tablets too */
    .mobile-menu-toggle {
        display: flex !important;
    }
    
    .nav-links {
        display: none !important;
    }
}

/* Responsive Design */
@media (max-width: 1200px) {
    .portfolio-item.large {
        grid-column: span 1;
    }
}

@media (max-width: 900px) {
    .core-engine-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .portfolio-grid {
        padding: 4rem 0;
    }
    
    .portfolio-grid .container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }
    
    .portfolio-item {
        padding: 1.5rem;
        margin: 0;
    }
    
    .portfolio-item.large {
        grid-column: span 1;
    }
    
    .portfolio-hero {
        padding: 5rem 0 3rem;
        min-height: 25vh;
    }
    
    .portfolio-title {
        font-size: 2.2rem;
    }
    
    .portfolio-subtitle {
        font-size: 1rem;
    }
    
    .tech-tags {
        justify-content: flex-start;
        gap: 0.3rem;
    }
    
    .tech-tags .tag {
        font-size: 0.75rem;
        padding: 0.3rem 0.6rem;
    }
      .logo-placeholder {
        font-size: 1.1rem;
        padding: 1rem 1.5rem;
        min-width: 100px;
        min-height: 60px;
    }
    
    .portfolio-image {
        min-height: 80px;
    }
    
    .image-placeholder {
        width: 100px;
        height: 80px;
        font-size: 2rem;
    }
    
    /* Core Engine section mobile adjustments */
    .core-engine-section .section-description {
        font-size: 0.9rem;
        margin-bottom: 1.5rem;
    }
    
    .sub-portfolio-item {
        padding: 1rem;
    }
    
    .sub-portfolio-item h4 {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }
    
    .sub-portfolio-item p {
        font-size: 0.85rem;
        margin-bottom: 0.75rem;
    }
      .partner-logo {
        height: 40px;
        max-width: 100px;
    }
    
    .icon-placeholder {
        width: 45px;
        height: 45px;
        font-size: 1.4rem;
    }
    
    .sub-portfolio-header {
        margin-bottom: 1rem;
        min-height: 60px;
        gap: 0.75rem;
    }
}

@media (max-width: 480px) {
    .portfolio-grid {
        padding: 3rem 0;
    }
    
    .portfolio-item {
        padding: 1rem;
        border-radius: 15px;
    }
    
    .portfolio-grid .container {
        padding: 0 0.75rem;
        gap: 1rem;
    }
    
    .portfolio-hero {
        padding: 4rem 0 2rem;
        min-height: 20vh;
    }
    
    .portfolio-hero-content {
        padding: 0 1rem;
    }
    
    .portfolio-title {
        font-size: 1.8rem;
        margin-bottom: 1rem;
    }
    
    .portfolio-subtitle {
        font-size: 0.9rem;
        line-height: 1.5;
    }
    
    .portfolio-content h3 {
        font-size: 1.2rem;
    }
    
    .portfolio-content p {
        font-size: 0.85rem;
    }
    
    .tech-tags .tag {
        font-size: 0.7rem;
        padding: 0.25rem 0.5rem;
    }
      .logo-placeholder {
        font-size: 0.9rem;
        padding: 0.8rem 1.2rem;
        min-width: 80px;
        min-height: 50px;
    }
    
    .portfolio-image {
        min-height: 60px;
    }
    
    .image-placeholder {
        width: 80px;
        height: 60px;
        font-size: 1.8rem;
    }
    
    /* Core Engine section very small mobile */
    .core-engine-section {
        padding: 1rem;
    }
    
    .core-engine-section .section-description {
        font-size: 0.85rem;
        margin-bottom: 1.5rem;
    }
    
    .sub-portfolio-item {
        padding: 0.75rem;
        border-radius: 12px;
    }
    
    .sub-portfolio-item h4 {
        font-size: 0.95rem;
    }
    
    .sub-portfolio-item p {
        font-size: 0.8rem;
        line-height: 1.4;
    }
      .partner-logo {
        height: 32px;
        max-width: 80px;
    }
    
    .icon-placeholder {
        width: 35px;
        height: 35px;
        font-size: 1.2rem;
    }
    
    .sub-portfolio-header {
        margin-bottom: 0.5rem;
        min-height: 35px;
        gap: 0.5rem;
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 375px) {
    .portfolio-hero {
        padding: 3rem 0 1.5rem;
        margin-top: 70px;
    }
    
    .portfolio-title {
        font-size: 1.6rem;
        line-height: 1.1;
    }
    
    .portfolio-subtitle {
        font-size: 0.85rem;
        line-height: 1.4;
    }
    
    .portfolio-grid {
        padding: 2rem 0;
    }
    
    .portfolio-grid .container {
        padding: 0 0.5rem;
        gap: 0.75rem;
    }
    
    .portfolio-item {
        padding: 0.75rem;
        border-radius: 12px;
    }
    
    .portfolio-content h3 {
        font-size: 1.1rem;
        margin-bottom: 0.75rem;
    }
      .portfolio-content p {
        font-size: 0.8rem;
        line-height: 1.4;
        margin-bottom: 0.75rem;
    }
    
    .logo-placeholder {
        font-size: 0.8rem;
        padding: 0.6rem 1rem;
        min-width: 60px;
        min-height: 40px;
    }
    
    .portfolio-image {
        min-height: 50px;
    }
    
    .image-placeholder {
        width: 60px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    /* Core Engine adjustments for very small screens */
    .core-engine-section {
        padding: 0.75rem;
    }
    
    .core-engine-section .section-description {
        font-size: 0.8rem;
        margin-bottom: 1rem;
    }
    
    .core-engine-grid {
        gap: 0.75rem;
        margin-top: 1rem;
    }
    
    .sub-portfolio-item {
        padding: 0.5rem;
        border-radius: 10px;
    }
    
    .sub-portfolio-item h4 {
        font-size: 0.9rem;
        margin-bottom: 0.4rem;
    }
    
    .sub-portfolio-item p {
        font-size: 0.75rem;
        line-height: 1.3;
        margin-bottom: 0.5rem;    }
    
    .partner-logo {
        height: 26px;
        max-width: 60px;
    }
    
    .icon-placeholder {
        width: 28px;
        height: 28px;
        font-size: 1rem;
    }
    
    .sub-portfolio-header {
        margin-bottom: 0.5rem;
        min-height: 35px;
        gap: 0.5rem;
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    /* ===== MOBILE MENU RESPONSIVENESS ===== */
    .navbar {
        z-index: 1002;
    }
    
    .mobile-menu-toggle {
        display: flex;
        z-index: 1003;
    }
    
    .nav-links {
        display: none;
    }
      .nav-links.mobile-active {
        display: flex !important;
        position: fixed;
        top: 70px;
        left: 0;
        width: 100vw;
        height: calc(100vh - 70px);
        background: #FFFFFF;  /* White background for both modes */
        flex-direction: column;
        justify-content: flex-start;
        align-items: stretch;
        padding: 0;
        z-index: 1001;
        border-top: 1px solid #DEE2E6;  /* Light border */
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);  /* Light shadow */
        overflow-y: auto;
    }

    .nav-links.mobile-active li {
        margin: 0;
        width: 100%;
    }

    .nav-links.mobile-active li a {
        display: block;
        padding: 1.5rem 2rem;
        color: #495057;  /* Dark gray text for white background */
        text-decoration: none;
        border-bottom: 1px solid #DEE2E6;  /* Light border */
        transition: all 0.3s ease;
        font-size: 1.1rem;
        width: 100%;
        box-sizing: border-box;
    }

    .nav-links.mobile-active li a:hover,
    .nav-links.mobile-active li a.active {
        background: #F5F5F5;  /* Light hover background */
        color: #8B5A3C;  /* Brown text for consistency */
    }

    .nav-links.mobile-active li:last-child a {
        border-bottom: none;
    }
      /* Light mode mobile menu styling - now using same styling as default */
}

/* ===== MOBILE MENU TOGGLE STYLING ===== */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 12px;
    z-index: 1003;
    position: relative;
    background: transparent;
    border: none;
    outline: none;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: all 0.3s ease;
    border-radius: 2px;
    display: block;
}

/* Mobile menu active state animations */
.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Light mode mobile menu toggle styling */
[data-theme="light"] .mobile-menu-toggle span {
    background: var(--primary-color);
}

/* Light Mode Adjustments */
[data-theme="light"] .portfolio-hero {
    background: var(--gradient-bg);
}

[data-theme="light"] .portfolio-title {
    background: linear-gradient(135deg, #2c2c2c 0%, #8B5A3C 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="light"] .portfolio-subtitle {
    color: var(--text-gray);
}

[data-theme="light"] .portfolio-grid {
    background: var(--bg-darker);
}

[data-theme="light"] .portfolio-item {
    background: var(--bg-card);
    border-color: var(--border-gray);
}

[data-theme="light"] .portfolio-item:hover {
    background: var(--bg-card-hover);
    box-shadow: 0 15px 40px var(--shadow-dark);
}

[data-theme="light"] .portfolio-content h3 {
    color: var(--text-white);
}

[data-theme="light"] .portfolio-content p {
    color: var(--text-gray);
}

/* Light mode adjustments for Core Engine section */
[data-theme="light"] .core-engine-section .section-description {
    color: var(--text-gray);
}

[data-theme="light"] .sub-portfolio-item {
    background: var(--bg-darker);
    border-color: var(--border-gray);
}

[data-theme="light"] .sub-portfolio-item:hover {
    box-shadow: 0 8px 25px var(--shadow-dark);
    border-color: var(--accent-copper);
}

[data-theme="light"] .sub-portfolio-item h4 {
    color: var(--text-white);
}

[data-theme="light"] .sub-portfolio-item p {
    color: var(--text-gray);
}

[data-theme="light"] .partner-logo {
    filter: brightness(1) contrast(1.2);
}

[data-theme="light"] .icon-placeholder {
    background: var(--gradient-warm);
    color: var(--bg-darker);
}

/* Portfolio items with direct sub-portfolio-item (like SIG structure) */
.portfolio-item > .sub-portfolio-item {
    margin: 0;
    width: 100%;
}

/* Remove the previous nested styling since we now use direct structure */
/* Removed problematic display:none rules that were hiding portfolio items */

/* Styling for h4 in portfolio items with sub-portfolio-header */
.portfolio-item .portfolio-content h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 1rem;
    line-height: 1.3;
}

/* Light theme overrides */
[data-theme="light"] .portfolio-item:has(.sub-portfolio-header) {
    border-color: var(--border-gray);
}

[data-theme="light"] .portfolio-item:has(.sub-portfolio-header):hover {
    border-color: var(--accent-copper);
    box-shadow: 0 8px 25px var(--shadow-dark);
}

[data-theme="light"] .portfolio-item .portfolio-content h4 {
    color: var(--text-white);
}