/*
 * Global Styles
 */
:root {
    --bg-dark: #0d1117;
    --bg-secondary: #161b22;
    /* Primary colour palette refreshed for a more vibrant look */
    --primary: #00aaff; /* electric azure for call‑to‑actions */
    --secondary: #0077b6; /* deep sea blue for hover states */
    --accent: #90e0ef; /* soft cyan accent used in headings */
    --text-primary: #e6edf3;
    --text-secondary: #94a3b8;
    --card-bg: #1f2630;
    --card-hover: #2a3240;
    --border-color: #2d3748;
    --nav-height: 70px;
    /* Unique accent colors for each project card */
    /* Updated accent colours for each project card */
    --proj1-color: #00b4d8; /* multiplayer arena – bright blue */
    --proj2-color: #f15bb5; /* VR safety – vibrant pink */
    --proj3-color: #9b5de5; /* AR science – royal purple */
    --proj4-color: #00bbf9; /* AI survival – cyan */
    --proj5-color: #f79256; /* procedural dungeon – warm orange */
    --proj6-color: #f8c630; /* VR tourism – golden yellow */
    --proj7-color: #00f5d4; /* analytics dashboard – mint green */
    --proj8-color: #da4167; /* ludo quest – crimson */
    --proj9-color: #00a19d; /* ballscapes – teal */
    font-family: 'Roboto', 'Montserrat', sans-serif;
    scroll-behavior: smooth;
}

/* Code styling */
/* Use Fira Code for code blocks and inline code snippets. Pre elements are given padding and
   a subtle background to distinguish them from the rest of the content. */
pre, code {
    font-family: 'Fira Code', monospace;
    font-size: 0.95rem;
    line-height: 1.4;
    color: var(--text-primary);
}

pre {
    background-color: var(--bg-secondary);
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

code {
    background-color: var(--bg-secondary);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
}

body {
    margin: 0;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

h1, h2, h3 {
    /* Use the Orbitron font for all headings to give the site a playful, gaming‑style aesthetic.
       Fallback to Montserrat if Orbitron fails to load. */
    font-family: 'Orbitron', 'Montserrat', sans-serif;
    font-weight: 600;
    margin-top: 0;
    color: var(--accent);
}

h2 {
    font-size: 2.2rem;
    margin-bottom: 0.6rem;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 0.3rem;
    color: var(--primary);
}

p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Utility Classes */
.section {
    padding: 4rem 1rem;
    max-width: 1100px;
    margin: 0 auto;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary);
    color: #fff;
    border-radius: 4px;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

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

.btn-secondary {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background-color: var(--primary);
    color: #fff;
}

/* Navigation Bar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    padding: 0 1.5rem;
    background-color: rgba(13, 17, 23, 0.85);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.navbar .logo {
    font-size: 1.6rem;
    font-weight: 700;
    /* Use Orbitron for the site logo to reinforce the gaming feel */
    font-family: 'Orbitron', 'Montserrat', sans-serif;
    color: var(--accent);
}

.navbar .nav-links {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
}

.navbar .nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hamburger Icon */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    cursor: pointer;
}

.hamburger span {
    height: 3px;
    width: 100%;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Hero Section */
.hero {
    position: relative;
    height: 80vh;
    min-height: 550px;
    width: 100%;
    background-image: url('../images/hero.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #fff;
    margin-top: var(--nav-height);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(13,17,23,0.8) 0%, rgba(13,17,23,0.95) 100%);
}

.hero-content {
    position: relative;
    max-width: 700px;
    padding: 1rem;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
    color: #fff;
}

.hero-content h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--accent);
}

.hero-content p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* About Section */
.about {
    background-color: var(--bg-secondary);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.skill {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 6px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.25);
    transition: background-color 0.3s;
}

.skill:hover {
    background-color: var(--card-hover);
}

.skill h3 {
    margin-bottom: 0.75rem;
    color: var(--accent);
    /* Allow longer skill names to wrap to the next line rather than overflow the card */
    white-space: normal;
    word-break: break-word;
    overflow-wrap: anywhere;
}

.skill ul {
    list-style: none;
    padding: 0;
}

.skill li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.project-card {
    background-color: var(--card-bg);
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.3);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s, box-shadow 0.3s;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.5);
}

.project-image {
    height: 160px;
    background-size: cover;
    background-position: center;
}

.project-content {
    padding: 1rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.project-content h3 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
    color: var(--primary);
}

.project-content p {
    flex: 1;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    /* Clamp text to avoid overflowing the card */
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/*
 * Per‑project accent colors
 * Each project card uses a unique highlight colour for its title, border and button.
 * These variables are defined at the top of the stylesheet as --proj1-color, --proj2-color, etc.
 */
.project-1 {
    border-top: 4px solid var(--proj1-color);
}
.project-1 .project-content h3 {
    color: var(--proj1-color);
}
.project-1 .btn-secondary {
    border-color: var(--proj1-color);
    color: var(--proj1-color);
}
.project-1 .btn-secondary:hover {
    background-color: var(--proj1-color);
    color: #fff;
}

.project-2 {
    border-top: 4px solid var(--proj2-color);
}
.project-2 .project-content h3 {
    color: var(--proj2-color);
}
.project-2 .btn-secondary {
    border-color: var(--proj2-color);
    color: var(--proj2-color);
}
.project-2 .btn-secondary:hover {
    background-color: var(--proj2-color);
    color: #fff;
}

.project-3 {
    border-top: 4px solid var(--proj3-color);
}
.project-3 .project-content h3 {
    color: var(--proj3-color);
}
.project-3 .btn-secondary {
    border-color: var(--proj3-color);
    color: var(--proj3-color);
}
.project-3 .btn-secondary:hover {
    background-color: var(--proj3-color);
    color: #fff;
}

.project-4 {
    border-top: 4px solid var(--proj4-color);
}
.project-4 .project-content h3 {
    color: var(--proj4-color);
}
.project-4 .btn-secondary {
    border-color: var(--proj4-color);
    color: var(--proj4-color);
}
.project-4 .btn-secondary:hover {
    background-color: var(--proj4-color);
    color: #fff;
}

.project-5 {
    border-top: 4px solid var(--proj5-color);
}
.project-5 .project-content h3 {
    color: var(--proj5-color);
}
.project-5 .btn-secondary {
    border-color: var(--proj5-color);
    color: var(--proj5-color);
}
.project-5 .btn-secondary:hover {
    background-color: var(--proj5-color);
    color: #fff;
}

.project-6 {
    border-top: 4px solid var(--proj6-color);
}
.project-6 .project-content h3 {
    color: var(--proj6-color);
}
.project-6 .btn-secondary {
    border-color: var(--proj6-color);
    color: var(--proj6-color);
}
.project-6 .btn-secondary:hover {
    background-color: var(--proj6-color);
    color: #fff;
}

.project-7 {
    border-top: 4px solid var(--proj7-color);
}
.project-7 .project-content h3 {
    color: var(--proj7-color);
}
.project-7 .btn-secondary {
    border-color: var(--proj7-color);
    color: var(--proj7-color);
}
.project-7 .btn-secondary:hover {
    background-color: var(--proj7-color);
    color: #fff;
}

/* New projects (8 & 9) accent styles */
.project-8 {
    border-top: 4px solid var(--proj8-color);
}
.project-8 .project-content h3 {
    color: var(--proj8-color);
}
.project-8 .btn-secondary {
    border-color: var(--proj8-color);
    color: var(--proj8-color);
}
.project-8 .btn-secondary:hover {
    background-color: var(--proj8-color);
    color: #fff;
}

.project-9 {
    border-top: 4px solid var(--proj9-color);
}
.project-9 .project-content h3 {
    color: var(--proj9-color);
}
.project-9 .btn-secondary {
    border-color: var(--proj9-color);
    color: var(--proj9-color);
}
.project-9 .btn-secondary:hover {
    background-color: var(--proj9-color);
    color: #fff;
}

/* Timeline (Experience) */
.timeline {
    position: relative;
    margin-top: 2rem;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--primary);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
    padding-left: 2rem;
}

.timeline-dot {
    position: absolute;
    left: -1px;
    top: 0.25rem;
    width: 10px;
    height: 10px;
    background-color: var(--primary);
    border-radius: 50%;
}

.timeline-date {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.3rem;
}

.timeline-content h3 {
    margin-bottom: 0.5rem;
    color: var(--accent);
}

.timeline-content ul {
    list-style: disc;
    margin: 0;
    padding-left: 1.25rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.timeline-content li {
    margin-bottom: 0.5rem;
}

/* Education & Certifications */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.education-item {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.education-item h3 {
    margin-bottom: 0.3rem;
    color: var(--primary);
}

.education-item p {
    margin-bottom: 0.3rem;
    color: var(--text-secondary);
}

.education-item .edu-date {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.certifications {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.certifications h3 {
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.certifications ul {
    list-style: none;
    padding: 0;
}

.certifications li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Certification cards
   The certifications list is turned into a responsive grid of cards with icons.
   Each card has a subtle border accent and interactive hover effect. */
.cert-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.cert-card {
    display: flex;
    align-items: center;
    background-color: var(--card-bg);
    padding: 0.8rem;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.3);
    border-left: 4px solid var(--primary);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cert-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.5);
}

.cert-card i {
    font-size: 1.6rem;
    margin-right: 0.6rem;
    color: var(--accent);
}

/* Certification card icons (custom images) */
.cert-icon {
    width: 32px;
    height: 32px;
    margin-right: 0.6rem;
    flex-shrink: 0;
    border-radius: 4px;
    object-fit: cover;
}

.cert-card .cert-text {
    display: flex;
    flex-direction: column;
}

.cert-card .cert-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.cert-card .cert-year {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Contact Section */
.contact-section {
    background-color: var(--bg-secondary);
    padding: 3rem 1rem;
    text-align: center;
    color: var(--text-secondary);
}

.contact-section h2 {
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.contact-info {
    margin: 1.5rem 0;
}

.contact-info p {
    margin: 0.25rem 0;
    color: var(--text-secondary);
}

.contact-info i {
    margin-right: 0.5rem;
    color: var(--primary);
}

.portfolio-link {
    margin-top: 1rem;
    color: var(--text-secondary);
}

.portfolio-link a {
    color: var(--primary);
    font-weight: 600;
}

.portfolio-link a:hover {
    text-decoration: underline;
}

.extra {
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.7);
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: var(--bg-secondary);
    margin: auto;
    padding: 2rem;
    border-radius: 8px;
    max-width: 500px;
    color: var(--text-primary);
    box-shadow: 0 2px 8px rgba(0,0,0,0.5);
}

.modal-content h3 {
    margin-top: 0;
    color: var(--primary);
}

.modal-content p {
    color: var(--text-secondary);
    line-height: 1.5;
}

.close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
}

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

/* Responsive Styles */
@media (max-width: 768px) {
    .navbar .nav-links {
        position: fixed;
        top: var(--nav-height);
        right: -100%;
        height: calc(100vh - var(--nav-height));
        width: 200px;
        background-color: var(--bg-secondary);
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
        transition: right 0.3s ease;
    }

    .navbar .nav-links.open {
        right: 0;
    }

    .hamburger {
        display: flex;
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    }
    
}
.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    text-align: left;
}

.footer-logo {
    width: 48px;
    height: 48px;
    border-radius: 6px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.6);
    object-fit: cover;
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.brand-name {
    font-family: 'Orbitron', 'Montserrat', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent);
}

.brand-role {
    font-size: 0.8rem;
    color: var(--text-secondary);
}