/* ===================================
   CSS Variables - Dark Theme
   =================================== */
:root {
    /* Dark Theme Colors */
    --color-bg-primary: #2b2b2b;
    --color-bg-secondary: #1f1f1f;
    --color-bg-dark: #1a1a1a;

    /* Text Colors */
    --color-text-primary: #ffffff;
    --color-text-secondary: #b8b8b8;
    --color-text-muted: #7a7a7a;

    /* Accent Colors */
    --color-accent: #ffffff;
    --color-accent-hover: #e0e0e0;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-xxl: 8rem;

    /* Typography */
    --font-sans: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-serif: 'Libre Baskerville', Georgia, serif;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.4s ease;
    --transition-slow: 0.6s ease;

    /* Layout */
    --nav-height: 80px;
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===================================
   Selection
   =================================== */
::selection {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--color-text-primary);
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-sans);
    font-weight: 400;
    line-height: 1.2;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background-color: transparent;
    z-index: 1000;
    transition: background-color var(--transition-normal);
}

.navbar.scrolled {
    background-color: rgba(43, 43, 43, 0.95);
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    width: 40px;
    height: 40px;
    color: var(--color-text-primary);
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.1);
}

.logo svg {
    width: 100%;
    height: 100%;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    padding: var(--spacing-xs) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-text-primary);
    transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
    background: url('images/Marcom_Artwork_v2.jpg') center/cover no-repeat;
    background-color: #96C5F7;
}

.hero-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(43, 43, 43, 0.3) 70%, rgba(43, 43, 43, 0.9) 100%);
}

.hero-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.2);
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 1200px;
    padding: 0 var(--spacing-md);
}

.signature {
    position: absolute;
    top: -150px;
    left: -200px;
    width: 200px;
    height: 100px;
    opacity: 0.8;
    animation: fadeInLeft 1s ease 0.3s both;
}

.hero-title {
    font-size: clamp(3rem, 12vw, 8rem);
    font-weight: 400;
    margin-bottom: var(--spacing-sm);
    animation: fadeInUp 1s ease 0.5s both;
}

.hero-name {
    display: block;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-family: var(--font-sans);
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 300;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    animation: fadeInUp 1s ease 0.7s both;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-primary);
    cursor: pointer;
    animation: fadeIn 1s ease 1s both, bounce 2s ease-in-out 2s infinite;
    z-index: 10;
}

.scroll-indicator span {
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    font-weight: 400;
}

.scroll-indicator svg {
    width: 20px;
    height: 20px;
}


/* ===================================
   Work Section
   =================================== */
.work-section {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-xxl) 0;
    min-height: 100vh;
}

.work-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
}

.slider-wrapper {
    overflow: hidden;
    width: 100%;
}

.project-grid {
    display: flex;
    gap: var(--spacing-md);
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
    contain: layout style; /* Performance optimization for infinite loop */
}

.project-card {
    position: relative;
    aspect-ratio: 1/1;
    overflow: hidden;
    border-radius: 0;
    cursor: pointer;
    transition: transform var(--transition-normal);
    flex: 0 0 calc((100% - (var(--spacing-md) * 2)) / 3);
    min-width: calc((100% - (var(--spacing-md) * 2)) / 3);
}

.project-card:hover {
    transform: translateY(-10px);
}

.project-number {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-text-primary);
    z-index: 3;
    opacity: 0.7;
    letter-spacing: 0.1em;
}

.project-image {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.project-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(100, 150, 230, 0.15);
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.project-card:hover .project-image::after {
    opacity: 0.7;
}

.project-image-placeholder {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image-placeholder {
    transform: scale(1.05);
}

/* Hide cloned cards from screen readers */
.project-card[data-clone="true"] {
    aria-hidden: true;
}

.project-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 100%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.project-title {
    font-family: var(--font-sans);
    font-size: 1.7rem;
    font-weight: 300;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}

.project-link {
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: 0.875rem;
    letter-spacing: 0.15em;
    font-weight: 400;
    position: relative;
    display: inline-block;
    width: fit-content;
    transition: letter-spacing var(--transition-fast);
}

.project-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: var(--color-text-primary);
}

.project-link:hover {
    letter-spacing: 0.2em;
}

/* ===================================
   Project Modal
   =================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.modal.active {
    opacity: 1;
    pointer-events: auto;
}

/* Dark overlay background */
.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
}

/* Modal content box */
.modal-content {
    position: relative;
    background: var(--color-bg-secondary);
    max-width: 800px;
    width: 90%;
    max-height: 85vh;
    overflow-y: auto;
    border-radius: 8px;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.6);
    transform: scale(0.9) translateY(30px);
    transition: transform var(--transition-normal);
    z-index: 1001;
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
}

/* Close button */
.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: var(--color-text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    z-index: 10;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

/* Modal image */
.modal-image {
    width: 100%;
    height: 400px;
    overflow: hidden;
    background: var(--color-bg-dark);
}

.modal-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Modal body */
.modal-body {
    padding: var(--spacing-lg) var(--spacing-md);
}

.modal-title {
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.modal-description {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.modal-description p {
    margin-bottom: var(--spacing-sm);
}

/* Tags */
.modal-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.modal-tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    letter-spacing: 0.05em;
}

/* Slider Navigation */
.slider-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
    color: var(--color-text-primary);
}

.slider-nav:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-50%) scale(1.1);
}

.slider-nav:active {
    transform: translateY(-50%) scale(0.95);
}

.slider-nav-prev {
    left: 0;
}

.slider-nav-next {
    right: 0;
}

.slider-nav svg {
    width: 24px;
    height: 24px;
}

/* ===================================
   References Section
   =================================== */
.references-section {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-xxl) 0;
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.references-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

.references-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 400;
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.references-subtitle {
    font-family: var(--font-sans);
    font-size: 1.125rem;
    font-weight: 300;
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    letter-spacing: 0.02em;
}

.references-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.reference-card {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: var(--spacing-md);
    aspect-ratio: 3/2;
    text-decoration: none;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    width: 200px;
    flex: 0 0 auto;
}

.reference-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, transparent 100%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.reference-card:hover {
    background-color: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.reference-card:hover::before {
    opacity: 0;
}

.reference-logo {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-placeholder {
    font-family: var(--font-sans);
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
    opacity: 0.5;
    transition: all var(--transition-normal);
}

.reference-card:hover .logo-placeholder {
    opacity: 0.8;
    transform: scale(1.05);
}

.client-logo {
    max-width: 100%;
    max-height: 100%;
    width: 100%;
    height: auto;
    object-fit: contain;
    filter: none;
    transition: all var(--transition-normal);
}

.reference-card:hover .client-logo {
    transform: scale(1.05);
    filter: none;
}

/* ===================================
   About Section
   =================================== */
.about-section {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-xxl) 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.about-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.about-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 400;
    margin-bottom: var(--spacing-md);
}

.about-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.about-text p {
    margin-bottom: var(--spacing-md);
}

.skills-list {
    list-style: none;
    padding-left: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.skills-list li {
    position: relative;
    padding-left: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.skills-list li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--color-text-muted);
}

.about-links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.about-link {
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: 1rem;
    letter-spacing: 0.05em;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-text-primary);
    border-radius: 0;
    transition: all var(--transition-fast);
}

.about-link:hover {
    background-color: var(--color-text-primary);
    color: var(--color-bg-primary);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background-color: var(--color-bg-dark);
    padding: var(--spacing-md) 0;
    text-align: center;
}

.footer-content {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

/* Fade-in Observer */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    .project-card {
        flex: 0 0 calc((100% - var(--spacing-md)) / 2);
        min-width: calc((100% - var(--spacing-md)) / 2);
    }

    .slider-nav {
        width: 40px;
        height: 40px;
    }

    .slider-nav svg {
        width: 20px;
        height: 20px;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
        --spacing-xxl: 5rem;
    }

    .nav-menu {
        gap: var(--spacing-sm);
    }

    .nav-link {
        font-size: 0.75rem;
    }

    .hero-title {
        font-size: clamp(2.5rem, 10vw, 5rem);
    }

    .signature {
        display: none;
    }

    .project-card {
        flex: 0 0 100%;
        min-width: 100%;
    }

    .project-grid {
        gap: var(--spacing-sm);
    }

    .references-grid {
        gap: var(--spacing-sm);
    }

    .reference-card {
        width: 150px;
    }

    .slider-nav {
        width: 36px;
        height: 36px;
    }

    .slider-nav svg {
        width: 18px;
        height: 18px;
    }

    .scroll-indicator {
        bottom: var(--spacing-md);
    }

    /* Modal responsive */
    .modal-content {
        width: 95%;
        max-height: 90vh;
    }

    .modal-image {
        height: 250px;
    }

    .modal-title {
        font-size: 2rem;
    }

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

@media (max-width: 480px) {
    .nav-container {
        padding: 0 var(--spacing-sm);
    }

    .logo {
        width: 32px;
        height: 32px;
    }

    .nav-menu {
        gap: var(--spacing-xs);
    }

    .reference-card {
        width: 130px;
    }

    .logo-placeholder {
        font-size: 1.25rem;
    }
}