/* Modern Professional Portfolio CSS
   Palette: Navy Blue (#0A192F), Royal Blue (#0052CC), Cyan Highlight (#00D2FF), Off-White (#F8FAFC)
*/

:root {
    --primary-dark: #0A192F;
    --primary-navy: #112240;
    --accent-blue: #0052CC;
    --accent-cyan: #00D2FF;
    --text-main: #1E293B;
    --text-muted: #64748B;
    --text-light: #94A3B8;
    --bg-light: #F8FAFC;
    --bg-white: #FFFFFF;
    --border-color: #E2E8F0;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(10, 25, 47, 0.08);
    --shadow-lg: 0 12px 24px rgba(10, 25, 47, 0.12);
    --transition: all 0.3s ease;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

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

a:hover {
    color: var(--accent-cyan);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 90px 0;
}

.bg-light {
    background-color: var(--bg-light);
}

/* Header & Nav */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 75px;
}

.nav-logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: -0.5px;
}

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

.nav-list {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-link {
    color: #E2E8F0;
    font-size: 0.95rem;
    font-weight: 500;
}

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

.nav-btn {
    background-color: var(--accent-blue);
    color: #FFFFFF !important;
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
}

.nav-btn:hover {
    background-color: #003D99;
    box-shadow: 0 0 12px rgba(0, 210, 255, 0.4);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.hamburger {
    display: block;
    width: 25px;
    height: 3px;
    background-color: #FFFFFF;
    position: relative;
    transition: var(--transition);
}

.hamburger::before, .hamburger::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 3px;
    background-color: #FFFFFF;
    transition: var(--transition);
}

.hamburger::before { top: -8px; }
.hamburger::after { top: 8px; }

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-navy) 100%);
    color: #FFFFFF;
    padding: 100px 0 120px;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 50px;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(0, 210, 255, 0.1);
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 210, 255, 0.3);
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.hero-title {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 15px;
}

.hero-roles {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin-bottom: 25px;
    color: var(--accent-cyan);
    font-weight: 600;
    font-size: 1.05rem;
}

.hero-description {
    font-size: 1.1rem;
    color: #94A3B8;
    line-height: 1.7;
    margin-bottom: 30px;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 35px;
    font-size: 0.95rem;
    color: #CBD5E1;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.hero-actions {
    display: flex;
    gap: 15px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--accent-blue);
    color: #FFFFFF;
    border: none;
}

.btn-primary:hover {
    background-color: #0040A8;
    box-shadow: 0 4px 15px rgba(0, 82, 204, 0.4);
    color: #FFFFFF;
}

.btn-outline {
    background-color: transparent;
    color: #FFFFFF;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

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

.btn-outline-dark:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    background-color: #EFF6FF;
}

.hero-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 3px solid rgba(255, 255, 255, 0.1);
}

.hero-img {
    width: 100%;
    height: auto;
    object-fit: cover;
    aspect-ratio: 1 / 1;
}

.hero-card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(10, 25, 47, 0.95), transparent);
    padding: 25px 20px 15px;
    display: flex;
    flex-direction: column;
}

.overlay-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: #FFFFFF;
}

.overlay-sub {
    font-size: 0.85rem;
    color: var(--accent-cyan);
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--primary-dark);
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin-top: 8px;
}

.section-line {
    width: 60px;
    height: 4px;
    background: var(--accent-blue);
    margin: 15px auto 0;
    border-radius: 2px;
}

/* About Grid */
.about-grid {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: 50px;
    align-items: center;
}

.lead-text {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-dark);
    line-height: 1.6;
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 15px;
    color: var(--text-muted);
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.stat-card {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    padding: 25px 20px;
    border-radius: var(--radius-md);
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--accent-blue);
}

.stat-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 10px;
    bottom: 10px;
    width: 3px;
    background-color: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
}

.timeline-dot {
    position: absolute;
    left: -26px;
    top: 5px;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background-color: var(--accent-blue);
    border: 3px solid var(--bg-white);
    box-shadow: 0 0 0 3px var(--border-color);
}

.timeline-content {
    background: var(--bg-white);
    padding: 30px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.role-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-dark);
}

.company-name {
    font-size: 1.05rem;
    color: var(--accent-blue);
}

.badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge-current {
    background-color: #E0F2FE;
    color: #0369A1;
}

.badge-past {
    background-color: #F1F5F9;
    color: #475569;
}

.timeline-highlight {
    background-color: #EFF6FF;
    border-left: 4px solid var(--accent-blue);
    padding: 10px 15px;
    margin-bottom: 15px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 0.95rem;
}

.responsibility-list li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.responsibility-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    font-weight: bold;
}

/* Venture & Card Grids */
.card-grid {
    display: grid;
    gap: 25px;
}

.card-grid.two-col {
    grid-template-columns: repeat(2, 1fr);
}

.card-grid.three-col {
    grid-template-columns: repeat(3, 1fr);
}

.venture-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 35px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.venture-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-blue);
}

.venture-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.venture-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-dark);
    color: var(--accent-cyan);
    font-weight: 800;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

.venture-title {
    font-size: 1.4rem;
    color: var(--primary-dark);
}

.venture-role {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-blue);
}

.venture-desc {
    color: var(--text-muted);
    margin-bottom: 25px;
    flex-grow: 1;
}

.btn-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
}

/* Projects */
.project-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 25px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-blue);
}

.project-tag {
    display: inline-block;
    align-self: flex-start;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--accent-blue);
    background: #EFF6FF;
    padding: 4px 10px;
    border-radius: 4px;
    margin-bottom: 15px;
}

.project-title {
    font-size: 1.25rem;
    color: var(--primary-dark);
    margin-bottom: 8px;
}

.project-role {
    font-size: 0.85rem;
    color: var(--text-main);
    margin-bottom: 12px;
}

.project-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 20px;
    flex-grow: 1;
}

.project-link {
    font-weight: 600;
    font-size: 0.9rem;
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.skill-category {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 30px;
    box-shadow: var(--shadow-sm);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    color: var(--accent-blue);
}

.category-header h3 {
    font-size: 1.2rem;
    color: var(--primary-dark);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-pill {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    padding: 8px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-main);
    transition: var(--transition);
}

.skill-pill:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    background: #EFF6FF;
}

/* Certifications */
.cert-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 25px;
    border-top: 4px solid var(--accent-blue);
    box-shadow: var(--shadow-sm);
}

.cert-issuer {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--accent-blue);
    margin-bottom: 5px;
}

.cert-title {
    font-size: 1.1rem;
    color: var(--primary-dark);
    margin-bottom: 8px;
}

.cert-detail {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.cert-verification {
    text-align: center;
    margin-top: 40px;
    padding: 25px;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    border: 1px dashed var(--accent-blue);
}

.cert-verification p {
    font-weight: 600;
    margin-bottom: 15px;
}

.cert-links {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.85rem;
}

/* Education */
.edu-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 30px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
    box-shadow: var(--shadow-sm);
}

.edu-icon {
    background: #EFF6FF;
    color: var(--accent-blue);
    padding: 15px;
    border-radius: var(--radius-sm);
}

.edu-year {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent-blue);
}

.edu-degree {
    font-size: 1.2rem;
    color: var(--primary-dark);
    margin: 4px 0;
}

.edu-field {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.edu-institution {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-main);
    margin-top: 5px;
}

/* Digital Footprint Grid */
.footprint-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 15px;
}

.footprint-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    padding: 20px 15px;
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.footprint-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.fp-title {
    font-weight: 700;
    color: var(--primary-dark);
    font-size: 0.95rem;
    display: block;
}

.fp-handle {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 40px;
    align-items: start;
}

.contact-info h3 {
    font-size: 1.4rem;
    color: var(--primary-dark);
    margin-bottom: 10px;
}

.contact-info p {
    color: var(--text-muted);
    margin-bottom: 30px;
}

.info-card {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.info-icon {
    width: 45px;
    height: 45px;
    background: #EFF6FF;
    color: var(--accent-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
}

.info-val {
    font-weight: 600;
    color: var(--primary-dark);
    font-size: 0.95rem;
}

.contact-cta-card {
    background: var(--bg-white);
    padding: 35px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.contact-cta-card h3 {
    font-size: 1.4rem;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.contact-cta-card p {
    color: var(--text-muted);
    margin-bottom: 25px;
    line-height: 1.6;
}

.contact-cta-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background: var(--primary-dark);
    color: #94A3B8;
    padding: 40px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    color: #FFFFFF;
    font-size: 1.2rem;
    font-weight: 700;
    display: block;
    margin-bottom: 4px;
}

.footer-copyright {
    font-size: 0.85rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .footprint-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .card-grid.three-col {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 75px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 75px);
        background-color: var(--primary-dark);
        padding: 40px 20px;
        transition: var(--transition);
        overflow-y: auto;
    }

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

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }

    .hero-container, .about-grid, .contact-grid {
        grid-template-columns: 1fr;
    }

    .card-grid.two-col, .card-grid.three-col, .skills-grid {
        grid-template-columns: 1fr;
    }

    .footprint-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-title {
        font-size: 2.3rem;
    }

    .footer-container {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .footprint-grid {
        grid-template-columns: 1fr;
    }
    .about-stats {
        grid-template-columns: 1fr;
    }
    .contact-cta-buttons {
        flex-direction: column;
    }
    .contact-cta-buttons .btn {
        width: 100%;
    }
}