/* CSS Variables & Global Styles */
:root {
    --bg-color: #040714;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --primary-accent: #FFD700;
    --transition-fast: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-family: 'Inter', sans-serif;
}

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

h1, h2, h3, h4, .logo {
    font-family: 'Montserrat', sans-serif;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    text-transform: uppercase;
    font-weight: 800;
    letter-spacing: 2px;
}

/* Accent highlight */
.highlight {
    color: var(--primary-accent);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: all var(--transition-fast);
    background: transparent;
}

.navbar.scrolled {
    background: #040714;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.logo span {
    color: var(--primary-accent);
}

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

.nav-link {
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color var(--transition-fast);
}

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

.hamburger {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-accent);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 0 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-content {
    flex: 1;
}

.greeting {
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
}

.name {
    font-size: 5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.title {
    font-size: 1.5rem;
    color: var(--primary-accent);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.tagline {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    display: inline-block;
}

.btn-primary {
    background-color: var(--primary-accent);
    color: #000;
    border: 2px solid var(--primary-accent);
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 2px solid var(--text-primary);
}

.btn-secondary:hover {
    background-color: var(--text-primary);
    color: #000;
}

.hero-graphics {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-img-bg {
    width: 350px;
    height: 350px;
    background-color: var(--primary-accent);
    border-radius: 50%;
    position: absolute;
    z-index: 1;
}

.profile-img {
    width: 330px;
    height: 330px;
    border-radius: 50%;
    object-fit: cover;
    position: relative;
    z-index: 2;
    border: 5px solid var(--bg-color);
}

/* About Section */
.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.about-text strong {
    color: var(--primary-accent);
    font-weight: 600;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.skill-col {
    background: #0a0e20;
    padding: 2rem;
    border-radius: 10px;
    border-top: 3px solid var(--primary-accent);
}

.skill-col h3 {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.skill-tags {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.tag {
    background: rgba(255, 215, 0, 0.1);
    color: var(--primary-accent);
    padding: 0.8rem 1rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
    border: 1px solid rgba(255, 215, 0, 0.3);
}

/* Glassmorphism Timeline */
.glass-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 0;
}

.glass-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 40px;
    height: 100%;
    width: 2px;
    background: rgba(255, 215, 0, 0.2);
}

.glass-timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 100px;
}

.glass-timeline-item:last-child {
    margin-bottom: 0;
}

.glass-timeline-dot {
    position: absolute;
    left: 20px;
    top: 0;
    width: 42px;
    height: 42px;
    background: #040714;
    border: 2px solid var(--primary-accent);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--primary-accent);
    font-size: 1.2rem;
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.4);
    z-index: 2;
}

.glass-timeline-content {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    padding: 2.5rem;
    transition: all 0.4s ease;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    position: relative;
}

.glass-timeline-content::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 15px;
    border-width: 10px 10px 10px 0;
    border-style: solid;
    border-color: transparent rgba(255, 255, 255, 0.03) transparent transparent;
}

.glass-timeline-content:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 215, 0, 0.3);
    box-shadow: 0 10px 40px rgba(255, 215, 0, 0.1);
    background: rgba(255, 255, 255, 0.05);
}

.glass-date {
    display: inline-block;
    background: rgba(255, 215, 0, 0.1);
    color: var(--primary-accent);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 1rem;
    border: 1px solid rgba(255, 215, 0, 0.2);
}

.glass-timeline-content h3 {
    font-size: 1.6rem;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.glass-timeline-content h4 {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 1.5rem;
    font-family: 'Inter', sans-serif;
}

.glass-timeline-content ul {
    list-style: none;
}

.glass-timeline-content ul li {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
    position: relative;
    padding-left: 1.5rem;
    line-height: 1.6;
}

.glass-timeline-content ul li::before {
    content: '\f105';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    color: var(--primary-accent);
}

.edu-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* Projects Section */
.project-list {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.project-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    background: #0a0e20;
    border-radius: 20px;
    padding: 3rem;
}

.project-number {
    font-size: 4rem;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.1);
    line-height: 1;
    margin-bottom: 1rem;
    font-family: 'Montserrat', sans-serif;
}

.project-title {
    font-size: 2rem;
    color: var(--primary-accent);
    margin-bottom: 0.5rem;
}

.project-subtitle {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.project-desc {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 2rem;
}

.p-tag {
    background: transparent;
    border: 1px solid var(--text-secondary);
    color: var(--text-secondary);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
}

.project-img {
    border-radius: 20px;
    overflow: hidden;
}

.project-img img {
    width: 100%;
    display: block;
    transition: transform 0.5s ease;
}

.project-item:hover .project-img img {
    transform: scale(1.05);
}

.superstore-kpis {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.kpi-box {
    background: rgba(255, 215, 0, 0.05);
    border: 1px solid rgba(255, 215, 0, 0.2);
    border-radius: 12px;
    padding: 1.5rem 1rem;
    text-align: center;
}

.kpi-box h4 {
    color: var(--primary-accent);
    font-size: 1.8rem;
    margin-bottom: 0.3rem;
    font-family: 'Montserrat', sans-serif;
}

.kpi-box p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.superstore-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.st-tab {
    padding: 0.5rem 1.2rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
    cursor: pointer;
    transition: all 0.3s ease;
}

.st-tab.active {
    background: var(--primary-accent);
    color: #000;
}

.superstore-image {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    margin-bottom: 2rem;
}

.superstore-image img {
    width: 100%;
    display: block;
    transition: opacity 0.3s ease;
}

.superstore-footer {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.key-insights h4, .tools-techniques h4 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.key-insights ul {
    list-style: disc;
    padding-left: 1.2rem;
    color: var(--primary-accent);
}

.key-insights li {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .superstore-kpis {
        grid-template-columns: repeat(2, 1fr);
    }
    .superstore-footer {
        grid-template-columns: 1fr;
    }
}

/* Contact Section */
.contact-wrap {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.contact-wrap h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.contact-wrap p {
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
    text-align: left;
}

.contact-box {
    background: #040714;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.contact-box:hover {
    border-color: var(--primary-accent);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 215, 0, 0.05);
}

.cb-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 215, 0, 0.1);
    color: var(--primary-accent);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8rem;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.contact-box:hover .cb-icon {
    background: var(--primary-accent);
    color: #000;
}

.cb-info h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 0.2rem;
    text-transform: none;
    font-family: 'Inter', sans-serif;
    font-weight: 700;
}

.cb-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Scroll Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 992px) {
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .project-item {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 120px;
    }
    .hero-buttons {
        justify-content: center;
    }
    .hero-graphics {
        margin-top: 3rem;
    }
    .name {
        font-size: 3.5rem;
    }
    .skills-grid {
        grid-template-columns: 1fr;
    }
    .glass-timeline::before {
        left: 20px;
    }
    .glass-timeline-item {
        padding-left: 60px;
    }
    .glass-timeline-dot {
        left: 0;
        width: 42px;
        height: 42px;
        font-size: 1.2rem;
    }
    .glass-timeline-content {
        padding: 1.5rem;
    }
    .glass-timeline-content::before {
        display: none;
    }
    .nav-links {
        display: none;
    }
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #040714;
        padding: 2rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        text-align: center;
        gap: 1.5rem;
    }
    .hamburger {
        display: block;
    }
}