:root {
    --bg-color: #0D1B2A;
    --secondary-bg: #1B263B;
    --accent-color: #415A77;
    --text-color: #778DA9;
    --white: #E0E1DD; /* Adding a lighter color for better contrast on headings */
}

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

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    cursor: default;
    -webkit-user-select: none; /* Safari */
    -moz-user-select: none; /* Firefox */
    -ms-user-select: none; /* IE10+/Edge */
    user-select: none; /* Standard */
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

/* Header & Nav */
header {
    background-color: var(--bg-color);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    color: var(--white);
}

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

.hamburger {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    transition: all 0.3s ease-in-out;
    background-color: var(--white);
}

/* Hero Section */
.hero {
    min-height: 40vh; /* Reduced from 60vh */
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 6rem 1rem 0; /* Reduced bottom padding */
    background-color: var(--bg-color);
    position: relative; /* For shapes */
    overflow: hidden; /* Contain shapes */
}


.hero-content h1 {
    font-size: 3rem;
    color: var(--white);
    margin-bottom: 1rem;
}

.hero-content h2 {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    padding: 0.8rem 2rem;
    background-color: var(--accent-color);
    color: var(--white);
    border-radius: 5px;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.cta-button:hover {
    background-color: var(--secondary-bg);
    border: 1px solid var(--accent-color);
}

/* Sections General */
section {
    padding: 8rem 2rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

h2 {
    font-size: 2.5rem;
    color: var(--white);
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
}

h2::after {
    content: '';
    display: block;
    width: 50px;
    height: 4px;
    background-color: var(--accent-color);
    margin: 10px auto 0;
}

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

.about-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
    text-align: center;
}

/* Skills & Software Section */
.skills-container {
    display: flex;
    flex-direction: column; /* Changed from row/wrap to column to stack vertically */
    align-items: center;    /* Center align the stacked items */
    gap: 3rem;
    width: 100%;
    margin-top: 2rem;
}

.skills-section, .software-section {
    width: 100%;
    max-width: 800px; /* Limit width for better readability when stacked */
}

.skills-section h3, .software-section h3 {
    color: var(--white);
    margin-bottom: 2rem;
    font-size: 1.5rem;
    text-align: center; /* Center headings */
}

.skills-section ul {
    display: flex;
    flex-direction: row; /* Horizontal */
    flex-wrap: wrap;     /* Allow wrapping */
    justify-content: center;
    gap: 1rem;
    text-align: center;
}

.skills-section li {
    background-color: var(--bg-color);
    padding: 0.8rem 1.5rem; /* Increased padding */
    border-radius: 20px;
    border: 1px solid var(--accent-color);
    border-left: 1px solid var(--accent-color);
    box-shadow: none;
    font-size: 1.1rem; /* Increased from 0.9rem to 1.1rem */
}

/* Restore or ensure software grid is flexible/horizontal */
.software-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
}

.software-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

.software-item img {
    width: 60px;  /* Set a fixed size for icons */
    height: 60px;
    object-fit: contain;
    margin-bottom: 0.5rem;
    filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.1)); /* Subtle glow */
    transition: transform 0.3s ease;
}

.software-item:hover {
    transform: translateY(-5px);
}

.software-item:hover img {
    transform: scale(1.1);
}

.software-item span {
    font-size: 0.9rem;
    color: var(--white);
    margin-top: 0.5rem;
}

/* Projects Section */
.project-category {
    margin-bottom: 4rem;
}

.project-category h3 {
    color: var(--white);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--accent-color);
    padding-left: 1rem;
}

.project-thumbnail {
    width: 100%;
    height: 200px;
    background-color: var(--secondary-bg); /* Placeholder color can be adjusted */
    background-image: linear-gradient(to bottom right, #2b3a55, #1B263B); /* Subtle gradient */
    border-radius: 5px;
    margin-bottom: 1.5rem;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--accent-color);
}

/* If user adds an img tag inside */
.project-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}


.thumbnail-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 50%);
    width: 100%;
    height: 100%;
}

.thumbnail-grid img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.project-card:hover .project-thumbnail img {
    transform: scale(1.05); /* Zoom effect on hover */
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

/* Make the whole card clickable */
.project-card {
    background-color: var(--secondary-bg);
    padding: 2rem;
    border-radius: 10px;
    transition: transform 0.3s ease;
    border: 1px solid transparent;
    position: relative; /* Essential for stretched-link */
}

.project-card a::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

/* Ensure other interactive elements inside (like tags if any) are above the stretched link if needed (here we don't have conflicting links) */
/* If we had other links, we would need to give them z-index: 2 and position: relative */

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    cursor: pointer;
}

.project-card h3 {
    color: var(--white);
    margin-bottom: 1rem;
}

.project-card p {
    margin-bottom: 1rem;
}

.tech-stack {
    font-size: 0.9rem;
    color: var(--accent-color);
}

.project-links {
    margin-top: 1.5rem;
    display: flex;
    gap: 1rem;
}

.btn-link {
    color: var(--white);
    text-decoration: underline;
    font-weight: 500;
}

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

/* Footer */
footer {
    background-color: var(--bg-color);
    padding: 3rem 2rem;
    text-align: center;
    border-top: 1px solid var(--secondary-bg);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.social-links a {
    font-size: 1.1rem;
    color: var(--white);
}

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

/* Page Specifics */
.page-section {
    padding-top: 80px; /* Reduced from 100px */
    min-height: 80vh;
    position: relative;
    overflow: hidden;
}

.nav-links a.active {
    color: var(--accent-color);
    font-weight: 700;
}

/* Contact Page */
.contact-content {
    text-align: center;
    color: var(--white);
}

.social-links-large {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
    align-items: center;
}

.contact-item {
    font-size: 1.3rem; /* Adjusted from 1.5rem */
    color: var(--white);
    padding: 1rem 2rem; /* Adjusted padding */
    border: 1px solid var(--accent-color);
    border-radius: 5px;
    width: 100%;
    max-width: 450px; /* Adjusted max-width */
    transition: all 0.3s ease;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    background: none; /* Reset button default */
    font-family: inherit; /* Inherit font */
}

.contact-item:hover {
    background-color: var(--accent-color);
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(65, 90, 119, 0.4); /* Add glow effect */
    border-color: var(--white); /* Highlight border */
}

.contact-item:active {
    transform: translateY(-1px);
}

/* Project Detail Page */
.project-detail-header {
    margin-bottom: 2rem;
}

.project-detail-header h1 {
    font-size: 2.5rem;
    color: var(--white);
    margin-bottom: 1rem;
}

.project-meta {
    display: flex;
    gap: 2rem;
    color: var(--accent-color);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.project-media {
    width: 100%;
    aspect-ratio: 16/9;
    height: auto;
    background-color: var(--secondary-bg);
    border-radius: 10px;
    margin-bottom: 3rem;
    overflow: hidden;
    border: 1px solid var(--accent-color);
    position: relative; /* For absolute positioning of children if needed, though aspect-ratio handles size */
}

.project-media iframe,
.project-media video {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

.project-content {
    max-width: 800px;
    margin: 0 auto;
}

.project-content h2 {
    font-size: 1.8rem;
    text-align: left;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
}

.project-content h2::after {
    margin: 10px 0 0;
}

.project-content p {
    margin-bottom: 1.5rem;
}

.back-link {
    display: inline-block;
    margin-bottom: 2rem;
    color: var(--accent-color);
    font-weight: 600;
}

.back-link:hover {
    color: var(--white);
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .nav-links {
        position: fixed;
        left: -100%;
        top: 70px;
        gap: 0;
        flex-direction: column;
        background-color: var(--bg-color);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 10px rgba(0,0,0,0.1);
    }

    .nav-links.active {
        left: 0;
    }

    .nav-links li {
        margin: 16px 0;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }
}
/* Animations */
.fade-in-section {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
    will-change: opacity, transform;
}

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

/* Staggered Delays for children */
.stagger-1 { transition-delay: 100ms; }
.stagger-2 { transition-delay: 200ms; }
.stagger-3 { transition-delay: 300ms; }
.stagger-4 { transition-delay: 400ms; }
.stagger-5 { transition-delay: 500ms; }


/* Contact Form */
.contact-form-container {
    max-width: 600px;
    margin: 3rem auto 0;
    text-align: left;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--white);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--accent-color);
    background-color: var(--secondary-bg);
    color: var(--white);
    border-radius: 5px;
    font-family: 'Montserrat', sans-serif;
    font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--white);
    box-shadow: 0 0 5px rgba(224, 225, 221, 0.2);
}

.submit-btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background-color: var(--accent-color);
    color: var(--white);
    border: none;
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
    width: 100%;
    font-size: 1rem;
}

.submit-btn:hover {
    background-color: var(--secondary-bg);
    border: 1px solid var(--accent-color);
}

/* Back to Top Button */
#back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--accent-color);
    color: var(--white);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 999;
}

#back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#back-to-top:hover {
    background-color: var(--white);
    color: var(--bg-color);
    transform: translateY(-5px);
}

/* Email Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(13, 27, 42, 0.9); /* Dark overlay matching BG */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--secondary-bg);
    padding: 2.5rem;
    border-radius: 10px;
    border: 1px solid var(--accent-color);
    text-align: center;
    position: relative;
    max-width: 90%;
    width: 400px;
    transform: translateY(-20px);
    transition: transform 0.3s ease;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
}

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

.modal-close {
    position: absolute;
    top: 10px;
    right: 15px;
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

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

.modal-title {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.copy-container {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.email-input {
    flex: 1;
    padding: 0.8rem;
    background-color: var(--bg-color);
    border: 1px solid var(--accent-color);
    color: var(--white);
    border-radius: 5px;
    font-family: 'Montserrat', sans-serif;
}

.copy-btn {
    padding: 0.8rem 1.2rem;
    background-color: var(--accent-color);
    color: var(--white);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.copy-btn:hover {
    background-color: var(--white);
    color: var(--bg-color);
}

.copy-feedback {
    color: #4CAF50; /* Green for success */
    font-size: 0.9rem;
    height: 1.2rem; /* Reserve space */
    opacity: 0;
    transition: opacity 0.3s ease;
}

.copy-feedback.visible {
    opacity: 1;
}

/* Contact Page Shapes */
.contact-page {
    position: relative;
    overflow: hidden;
}

.shapes-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.contact-content {
    position: relative;
    z-index: 1;
}

.shape {
    position: absolute;
}

.shape-top-right {
    top: -100px;
    right: -100px;
    width: 60%;
    max-width: 600px;
    height: auto;
    opacity: 0.8;
}

.shape-bottom-left {
    bottom: -50px;
    left: -50px;
    width: 50%;
    max-width: 500px;
    height: auto;
    opacity: 0.9;
}

.hero-contact-options {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.hero-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    border: 1px solid var(--accent-color);
    border-radius: 5px;
    color: var(--white);
    background-color: rgba(27, 38, 59, 0.8);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.hero-btn:hover {
    background-color: var(--accent-color);
    transform: translateY(-2px);
}

.hero-btn i {
    font-size: 1.1rem;
}

.shape-bottom-right {
    bottom: -50px;
    right: -50px;
    width: 40%;
    max-width: 400px;
    height: auto;
    opacity: 0.8;
}