:root {
    --bg-color: #fcfcfc;
    --text-color: #1a1a1a;
    --accent-color: #0f172a; /* Navy Blue */
    --accent-light: #1e293b;
    --muted-text: #64748b;
    --container-width: 1100px;
    --header-height: 80px;
    --transition-speed: 0.3s;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-speed);
}

ul {
    list-style: none;
}

/* Header & Nav */
header {
    height: var(--header-height);
    background: rgba(252, 252, 252, 0.95);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #eee;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -1px;
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    font-weight: 400;
    font-size: 0.95rem;
    color: var(--muted-text);
}

.nav-links a:hover {
    color: var(--accent-color);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 2px;
    margin: 5px auto;
    background-color: var(--accent-color);
    transition: all 0.3s ease-in-out;
}

/* Section Common */
section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 600;
    margin-bottom: 3rem;
    text-align: center;
    letter-spacing: -1px;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    background-color: #fff;
    padding-top: var(--header-height);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 4rem;
}

.hero-text h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: -2px;
    color: var(--accent-color);
}

.hero-text p {
    font-size: 1.2rem;
    color: var(--muted-text);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--accent-color);
    color: #fff;
    font-weight: 500;
    border-radius: 4px;
    transition: background-color var(--transition-speed);
}

.btn:hover {
    background-color: var(--accent-light);
}

.hero-image {
    display: flex;
    justify-content: center;
}

.photo-placeholder {
    width: 400px;
    height: 400px;
    background-color: #f1f5f9;
    border-radius: 50%; /* Modern circular photo */
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted-text);
    border: 2px solid #e2e8f0;
    overflow: hidden;
}

/* About Section */
.about {
    background-color: var(--bg-color);
}

.about-text {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.15rem;
    color: var(--muted-text);
}

.about-text p {
    margin-bottom: 1.5rem;
}

/* Timeline / Experience Section */
.experience {
    padding-bottom: 50px;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    width: 2px;
    height: 100%;
    background-color: #eee;
    transform: translateX(-50%);
}

.timeline-item {
    margin-bottom: 4rem;
    position: relative;
    width: 50%;
    padding: 0 3rem;
}

.timeline-item:nth-child(odd) {
    left: 0;
    text-align: right;
}

.timeline-item:nth-child(even) {
    left: 50%;
    text-align: left;
}

.timeline-item::after {
    content: '';
    position: absolute;
    top: 0;
    width: 16px;
    height: 16px;
    background-color: var(--accent-color);
    border-radius: 50%;
    z-index: 1;
}

.timeline-item:nth-child(odd)::after {
    right: -8px;
}

.timeline-item:nth-child(even)::after {
    left: -8px;
}

.timeline-date {
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.timeline-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.25rem;
    color: var(--text-color);
}

.company {
    font-weight: 500;
    color: var(--accent-light);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.timeline-content p {
    color: var(--muted-text);
    font-size: 0.95rem;
}

.location-text {
    margin-top: 1rem;
    color: var(--muted-text);
    font-weight: 500;
}

/* Portfolio Section */
.portfolio {
    background-color: #fff;
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1.5rem;
    border: 1px solid #e2e8f0;
    background: transparent;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
    border-radius: 30px;
    transition: all var(--transition-speed);
}

.filter-btn.active, .filter-btn:hover {
    background-color: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.project-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid #f1f5f9;
    cursor: pointer;
    position: relative;
}

.project-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    border-color: var(--accent-color);
}

.project-img {
    width: 100%;
    aspect-ratio: 16/10;
    overflow: hidden;
    background-color: #f1f5f9;
}

.project-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-card:hover .project-img img {
    transform: scale(1.1);
}

.project-info {
    padding: 1.5rem;
    transition: background-color 0.3s ease;
}

.project-card:hover .project-info h3 {
    color: var(--accent-color);
}

.project-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    transition: color 0.3s ease;
}

.location {
    font-size: 0.9rem;
    color: var(--muted-text);
    margin-bottom: 0.25rem;
}

.meta {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent-color);
}

/* Contact Section */
.contact {
    text-align: center;
    padding-bottom: 100px; /* Controlled space at the end */
}

.contact-content p {
    font-size: 1.2rem;
    color: var(--muted-text);
    margin-bottom: 2rem;
}

.contact-info-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    align-items: center;
}

.contact-item {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-color);
    position: relative;
}

.contact-item::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width var(--transition-speed);
}

.contact-item:hover::after {
    width: 100%;
}

.location-text {
    color: var(--muted-text);
    font-weight: 500;
}

/* Modal Styles */
.modal {
    display: none; /* Switched to flex via JS when active */
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    padding: 20px;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: var(--bg-color);
    padding: 3rem;
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    overflow-y: auto;
    border-radius: 12px;
    position: relative;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    scrollbar-width: thin;
    scrollbar-color: var(--muted-text) transparent;
}

.modal-content::-webkit-scrollbar {
    width: 6px;
}

.modal-content::-webkit-scrollbar-thumb {
    background-color: var(--muted-text);
    border-radius: 10px;
}

.close-modal {
    position: sticky;
    top: -1.5rem;
    float: right;
    margin-right: -1.5rem;
    color: var(--muted-text);
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    transition: color var(--transition-speed);
    z-index: 100;
    background: var(--bg-color);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.close-modal:hover {
    color: var(--accent-color);
}

#modal-body h2 {
    color: var(--accent-color);
    font-size: 2rem;
    margin-bottom: 1rem;
    letter-spacing: -1px;
    padding-right: 40px; /* Space for close button */
}

#modal-body .modal-meta {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
    color: var(--muted-text);
    font-size: 0.95rem;
    flex-wrap: wrap;
}

.modal-slider {
    position: relative;
    width: 100%;
    aspect-ratio: 16/10;
    margin-bottom: 2rem;
    overflow: hidden;
    border-radius: 8px;
    background-color: #f1f5f9;
    flex-shrink: 0; /* Don't collapse in flex */
}

.slider-track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    height: 100%;
}

.slider-track img {
    min-width: 100%;
    height: 100%;
    object-fit: cover;
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(15, 23, 42, 0.5);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: background 0.3s;
    backdrop-filter: blur(4px);
}

.slider-btn:hover {
    background: rgba(15, 23, 42, 0.8);
}

.prev-btn { left: 1rem; }
.next-btn { right: 1rem; }

.modal-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted-text);
}

#modal-body .modal-description {
    line-height: 1.8;
    color: var(--text-color);
}

/* Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.animate-on-scroll.appear {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-text h1 {
        font-size: 2.75rem;
    }
    
    .hero-text p {
        margin: 0 auto 2.5rem;
    }
    
    .photo-placeholder {
        width: 300px;
        height: 300px;
    }
    
    .hero {
        height: auto;
        padding: 150px 0 100px;
    }

    .modal-content {
        padding: 2rem 1.5rem;
        max-height: 95vh;
    }

    .close-modal {
        top: -1rem;
        right: 0.5rem;
        margin-right: 0;
    }
}


/* Logo Slider Styles */
.logo-slider-section {
    padding: 60px 0;
    background-color: #fff;
    border-top: 1px solid #f1f5f9;
    border-bottom: 1px solid #f1f5f9;
    overflow: hidden;
}

.logo-slider {
    margin: auto;
    width: 100%;
    position: relative;
    display: grid;
    place-items: center;
}

.logo-track {
    display: flex;
    width: calc(350px * 10);
    animation: scroll 40s linear infinite;
}

.logo-track:hover {
    animation-play-state: paused;
}

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(calc(-350px * 5)); }
}

.slide {
    width: 350px;
    height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 15px;
}

.slide img {
    max-width: 250px;
    max-height: 100px;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: all var(--transition-speed);
}

.slide img:hover {
    filter: grayscale(0%);
    opacity: 1;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .menu-toggle {
        display: block;
    }
    
    /* Active Mobile Nav */
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: #fff;
        padding: 2rem;
        border-bottom: 1px solid #eee;
        gap: 1.5rem;
        text-align: center;
    }

    /* Timeline Mobile */
    .timeline::before {
        left: 0;
    }
    
    .timeline-item {
        width: 100%;
        padding: 0 0 0 2rem;
        text-align: left !important;
    }
    
    .timeline-item:nth-child(even) {
        left: 0;
    }
    
    .timeline-item::after {
        left: -8px !important;
        right: auto !important;
    }
}