/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Core Colors - Refined palette */
    --primary-color: #0F1A2B;
    --secondary-color: #1F2E46;
    --accent-color: #D4A556;
    --accent-soft: #E8CFA3;
    --accent-dark: #B8903D;

    /* Backgrounds */
    --light-bg: #F7F8FA;
    --white: #FFFFFF;
    --overlay-dark: rgba(15, 26, 43, 0.95);

    /* Text */
    --text-dark: #0F1A2B;
    --text-mid: #3E4A5A;
    --text-light: #6C778A;

    /* Borders & Shadows - Enhanced */
    --border-light: #D5D9E0;
    --border-accent: rgba(212, 165, 86, 0.3);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.4s ease;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    left: -9999px;
    z-index: 999;
    background: var(--accent-color);
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    font-weight: 600;
}

.skip-link:focus {
    left: 0.5rem;
    top: 0.5rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation - Enhanced */
.navbar {
    background: var(--white);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(10px);
    transition: box-shadow var(--transition-base);
}

.navbar:hover {
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.02em;
    transition: color var(--transition-base);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
    transition: transform var(--transition-base);
}

.nav-toggle:hover {
    transform: scale(1.05);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--primary-color);
    transition: all var(--transition-base);
}

/* Hamburger animation */
.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    margin: 0;
}

.nav-menu a {
    color: var(--text-mid);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-base);
    position: relative;
    padding: 0.25rem 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width var(--transition-base);
}

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

.nav-menu a:hover::after {
    width: 100%;
}

/* Active nav link */
.nav-menu a:active,
.nav-menu a:focus {
    color: var(--accent-dark);
}

/* Buttons - Enhanced */
.btn {
    padding: 0.875rem 2rem;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-base);
    display: inline-block;
    border: none;
    cursor: pointer;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--accent-color);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
}

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

.btn-secondary:hover {
    background: var(--accent-color);
    color: white;
    box-shadow: var(--shadow-sm);
}

/* Hero Section - Enhanced */
.hero {
    background: linear-gradient(135deg,
            var(--light-bg) 0%,
            color-mix(in srgb, var(--white) 92%, var(--accent-color)) 100%);
    padding: 5rem 0 4rem;
    position: relative;
    overflow: hidden;
}

/* Subtle background pattern */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle at 2px 2px, rgba(212, 165, 86, 0.05) 1px, transparent 0);
    background-size: 40px 40px;
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 4rem;
    align-items: start;
    position: relative;
    z-index: 1;
}

.hero-kicker {
    color: var(--accent-color);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 1rem;
    animation: fadeInDown 0.6s ease;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-text h1 {
    font-size: 3.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    line-height: 1.1;
    font-weight: 800;
    letter-spacing: -0.03em;
    animation: fadeInUp 0.6s ease 0.1s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-tagline {
    font-size: 1.15rem;
    color: var(--text-mid);
    margin-bottom: 1.5rem;
    font-weight: 500;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-location {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-top: -0.25rem;
    margin-bottom: 0.75rem;
    letter-spacing: 0.02em;
    animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-intro {
    font-size: 1.1rem;
    color: var(--text-mid);
    margin-bottom: 1rem;
    line-height: 1.6;
    font-weight: 500;
    animation: fadeInUp 0.6s ease 0.4s both;
}

.hero-description {
    font-size: 1.0rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.7;
    animation: fadeInUp 0.6s ease 0.5s both;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
    animation: fadeInUp 0.6s ease 0.6s both;
}

/* Profile Section in Hero - Enhanced */
.hero-image {
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: fadeIn 0.8s ease 0.4s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.profile-photo {
    width: 280px;
    height: 280px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid white;
    box-shadow: var(--shadow-lg);
    margin-bottom: 1.5rem;
    transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

.profile-photo:hover {
    transform: scale(1.05) rotate(2deg);
    box-shadow: var(--shadow-xl);
}

.profile-info {
    text-align: center;
}

.profile-info h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.4rem;
    font-weight: 700;
}

.profile-credentials p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
    line-height: 1.5;
}

.social-links {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    margin-top: 1.25rem;
    flex-wrap: wrap;
}

.social-links a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border: 1.5px solid var(--accent-color);
    border-radius: 6px;
    transition: all var(--transition-base);
    font-size: 0.85rem;
}

.social-links a:hover {
    background: var(--accent-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* Engineering Focus - Enhanced */
.focus {
    padding: 5rem 0;
    background: var(--white);
}

.focus h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 800;
    text-align: center;
    letter-spacing: -0.02em;
}

.section-lead {
    font-size: 1.05rem;
    color: var(--text-light);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem;
    line-height: 1.7;
}

.focus-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.focus-card {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid var(--accent-color);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    position: relative;
    overflow: hidden;
}

/* Hover effect overlay */
.focus-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(212, 165, 86, 0.1), transparent);
    transition: left 0.5s;
}

.focus-card:hover::before {
    left: 100%;
}

.focus-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-dark);
}

.card-number {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.75rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.focus-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1.2rem;
    font-weight: 700;
    transition: color var(--transition-base);
}

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

.focus-card p {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Skills Section - Enhanced */
.skills {
    padding: 5rem 0;
    background: var(--light-bg);
}

.skills h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 800;
    text-align: center;
    letter-spacing: -0.02em;
}

.skills-lead {
    font-size: 1.05rem;
    color: var(--text-light);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem;
    line-height: 1.7;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.skills-column {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.skills-column:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.skills-column h3 {
    color: var(--primary-color);
    margin-bottom: 1.25rem;
    font-size: 1.3rem;
    font-weight: 700;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--accent-color);
}

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

.skills-column li {
    color: var(--text-light);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
    font-size: 0.95rem;
    transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.skills-column li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
    transition: transform var(--transition-fast);
}

.skills-column li:hover {
    color: var(--text-mid);
    padding-left: 2rem;
}

.skills-column li:hover::before {
    transform: translateX(4px);
}

.inline-badge {
    height: 22px;
    margin-left: 6px;
    vertical-align: middle;
    opacity: 0.9;
    transition: transform var(--transition-base), opacity var(--transition-base);
    cursor: pointer;
}

.inline-badge:hover {
    transform: scale(4.5);
    opacity: 1;
    z-index: 10;
    position: relative;
}

/* Approach Section - Enhanced */
.approach {
    padding: 5rem 0;
    background: var(--white);
}

.approach h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 800;
    text-align: center;
    letter-spacing: -0.02em;
}

.approach-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.approach-item {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    border: 1px solid transparent;
}

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

.approach-item h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
    font-weight: 700;
}

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

.approach-item li {
    color: var(--text-light);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

.approach-item li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
    transition: transform var(--transition-fast);
}

.approach-item li:hover {
    color: var(--text-mid);
}

.approach-item li:hover::before {
    transform: translateX(4px);
}

.explainability-callout {
    margin-top: 3rem;
    padding: 2.5rem;
    background: linear-gradient(135deg,
            var(--accent-color) 0%,
            var(--primary-color) 100%);
    border-radius: 12px;
    color: white;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-base);
}

.explainability-callout:hover {
    transform: scale(1.02);
}

.explainability-callout h3 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.4rem;
    font-weight: 700;
}

.explainability-callout p {
    line-height: 1.7;
    margin-bottom: 0.75rem;
    opacity: 0.95;
    font-size: 0.95rem;
}

.explainability-large {
    max-width: 900px;
    margin: 2.5rem auto;
    padding: 2.5rem;
}

/* Experience Section - Enhanced */
.experience {
    padding: 5rem 0;
    background: var(--light-bg);
}

.experience h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 3rem;
    font-weight: 800;
    text-align: center;
    letter-spacing: -0.02em;
}

.experience-item {
    background: white;
    padding: 2.5rem;
    margin-bottom: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--accent-color);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.experience-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.experience-header h3 {
    color: var(--primary-color);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.experience-company {
    color: var(--accent-color);
    font-weight: 600;
    font-size: 1.05rem;
}

.experience-date {
    color: var(--text-light);
    font-size: 0.9rem;
    white-space: nowrap;
}

.experience-description {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.experience-highlights {
    list-style: none;
    padding: 0;
}

.experience-highlights li {
    color: var(--text-light);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
    font-size: 0.95rem;
}

.experience-highlights li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

/* Projects Section - Enhanced */
.projects {
    padding: 5rem 0;
    background: var(--white);
}

.projects h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 3rem;
    font-weight: 800;
    text-align: center;
    letter-spacing: -0.02em;
}

.proj-section {
    margin-bottom: 3rem;
}

.proj-section h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 700;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent-color);
}

.proj-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.proj-card {
    background: var(--light-bg);
    padding: 1.75rem;
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
    border-left: 3px solid var(--accent-soft);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

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

.proj-card h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.05rem;
    line-height: 1.4;
    font-weight: 600;
    transition: color var(--transition-base);
}

.proj-card:hover h4 {
    color: var(--accent-color);
}

.proj-meta {
    color: var(--text-mid);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.proj-desc {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.proj-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: color var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

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

.proj-link::after {
    content: '→';
    transition: transform var(--transition-fast);
}

.proj-link:hover::after {
    transform: translateX(4px);
}

/* Links Section - Enhanced */
.links {
    padding: 5rem 0;
    background: var(--light-bg);
}

.links h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 3rem;
    font-weight: 800;
    text-align: center;
    letter-spacing: -0.02em;
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.links-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    box-shadow: var(--shadow-sm);
    border: 1px solid transparent;
}

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

.links-tag {
    display: inline-block;
    background: var(--accent-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.links-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1.3rem;
    font-weight: 700;
}

.links-card p {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.links-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

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

.links-link::after {
    content: '→';
    transition: transform var(--transition-fast);
}

.links-link:hover::after {
    transform: translateX(4px);
}

/* Contact Section - Enhanced */
.contact {
    padding: 5rem 0;
    background: var(--white);
}

.contact h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 800;
    text-align: center;
    letter-spacing: -0.02em;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin: 3rem 0;
}

.contact-section {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.contact-section:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.contact-section h3 {
    color: var(--primary-color);
    margin-bottom: 1.25rem;
    font-size: 1.3rem;
    font-weight: 700;
}

.contact-list {
    list-style: none;
    padding: 0;
}

.contact-list li {
    color: var(--text-light);
    padding: 0.75rem 0;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.5;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.95rem;
    transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.contact-list li:last-child {
    border-bottom: none;
}

.contact-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
    transition: transform var(--transition-fast);
}

.contact-list li:hover {
    color: var(--text-mid);
    padding-left: 2rem;
}

.contact-list li:hover::before {
    transform: scale(1.2);
}

.contact-focus {
    margin: 3rem 0;
    text-align: center;
}

.contact-focus h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
    font-weight: 700;
}

.focus-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.focus-tag {
    background: var(--light-bg);
    color: var(--accent-color);
    padding: 0.5rem 1.25rem;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.9rem;
    border: 2px solid var(--accent-color);
    transition: all var(--transition-base);
    cursor: default;
}

.focus-tag:hover {
    background: var(--accent-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.contact-cta {
    text-align: center;
    margin-top: 3rem;
    padding: 2.5rem;
    background: var(--light-bg);
    border-radius: 12px;
}

.contact-cta p {
    font-size: 1.0rem;
    color: var(--text-mid);
    margin-bottom: 1.5rem;
}

/* Footer - Enhanced */
.footer {
    background: var(--primary-color);
    color: white;
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    margin-bottom: 1.5rem;
}

.footer-bio h3 {
    margin-bottom: 0.75rem;
    font-size: 1.4rem;
    font-weight: 700;
}

.footer-bio p {
    opacity: 0.9;
    margin-bottom: 0.5rem;
    line-height: 1.6;
    font-size: 0.95rem;
}

.footer-note {
    margin-top: 1rem;
    font-size: 0.85rem;
    opacity: 0.8;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.footer-links a {
    color: white;
    text-decoration: none;
    opacity: 0.85;
    font-weight: 500;
    transition: opacity var(--transition-base), transform var(--transition-base);
    font-size: 0.95rem;
}

.footer-links a:hover {
    opacity: 1;
    transform: translateY(-2px);
}

.footer-copyright {
    text-align: center;
    opacity: 0.6;
    font-size: 0.85rem;
}

.footer-cert {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0.9;
}

.cert-badge {
    height: 100px;
    margin-bottom: 0.5rem;
    transition: transform var(--transition-slow), opacity var(--transition-base);
    cursor: pointer;
}

.cert-badge:hover {
    transform: scale(1.5);
    opacity: 1;
}

.cert-text {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.85);
    text-align: center;
}

/* Scroll to Top Button (Optional Enhancement) */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--accent-color);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
    z-index: 999;
    border: none;
    font-size: 1.5rem;
    font-weight: bold;
}

.scroll-to-top.visible {
    display: flex;
    opacity: 0.7;
    visibility: visible;
}

.scroll-to-top:hover {
    opacity: 0.5;
    background: var(--accent-dark);
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* Loading Animation (Optional) */
@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

/* Responsive Design - Enhanced */
@media (max-width: 1024px) {
    .container {
        padding: 0 20px;
    }

    .hero-content {
        gap: 3rem;
    }

    .focus-cards,
    .approach-grid {
        grid-template-columns: 1fr;
    }

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

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

@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }

    .hero-text h1 {
        font-size: 2.75rem;
    }

    .hero-cta {
        justify-content: center;
    }

    .skills-grid {
        grid-template-columns: 1fr 1fr;
    }

    .proj-cards {
        grid-template-columns: 1fr 1fr;
    }

    .links-grid {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .footer-links {
        justify-content: center;
    }

    /* Mobile Navigation */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow-md);
        gap: 0;
        border-top: 1px solid var(--border-light);
    }

    .nav-menu.active {
        display: flex;
        animation: slideDown 0.3s ease;
    }

    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .nav-menu li {
        padding: 0.75rem 0;
        border-bottom: 1px solid var(--border-light);
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

    .nav-menu a::after {
        display: none;
    }

    .experience-header {
        flex-direction: column;
    }

    .experience-date {
        align-self: flex-start;
    }
}

@media (max-width: 640px) {
    .hero {
        padding: 2.5rem 0 1.5rem;
    }

    .hero-text h1 {
        font-size: 2rem;
    }

    .hero-intro,
    .hero-description {
        font-size: 0.9rem;
    }

    .profile-photo {
        width: 190px;
        height: 190px;
    }

    .focus h2,
    .skills h2,
    .approach h2,
    .experience h2,
    .projects h2,
    .links h2,
    .contact h2 {
        font-size: 1.9rem;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .social-links {
        flex-direction: column;
        gap: 0.5rem;
        width: 100%;
    }

    .social-links a {
        width: 100%;
        text-align: center;
    }

    .proj-cards {
        grid-template-columns: 1fr;
    }

    .focus,
    .skills,
    .approach,
    .experience,
    .projects,
    .links,
    .contact {
        padding: 2.5rem 0;
    }

    .focus-card,
    .approach-item,
    .skills-column,
    .experience-item {
        padding: 1.5rem;
    }

    .btn {
        padding: 0.75rem 1.4rem;
        font-size: 0.9rem;
    }

    .focus-tags {
        gap: 0.5rem;
    }

    .focus-tag {
        padding: 0.35rem 0.9rem;
        font-size: 0.85rem;
    }

    .footer-content {
        gap: 1.25rem;
    }

    .cert-badge {
        height: 70px;
    }

    /* Tone down hover zoom */
    .inline-badge:hover,
    .cert-badge:hover {
        transform: scale(2);
    }

    .scroll-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 14px;
    }

    .hero {
        padding: 2rem 0 1.25rem;
    }

    .hero-text h1 {
        font-size: 1.75rem;
    }

    .hero-intro,
    .hero-description {
        font-size: 0.9rem;
    }

    .nav-brand {
        font-size: 1.15rem;
    }

    .profile-photo {
        width: 160px;
        height: 160px;
    }

    .focus-card,
    .approach-item,
    .skills-column {
        padding: 1.4rem;
    }

    .experience-item {
        padding: 1.5rem;
    }

    .focus h2,
    .skills h2,
    .approach h2,
    .experience h2,
    .projects h2,
    .links h2,
    .contact h2 {
        font-size: 1.7rem;
    }
}

/* Print Styles */
@media print {

    .navbar,
    .hero-cta,
    .scroll-to-top,
    .nav-toggle {
        display: none;
    }

    body {
        font-size: 12pt;
    }

    .hero {
        padding: 2rem 0;
    }

    .focus,
    .skills,
    .approach,
    .experience,
    .projects,
    .links,
    .contact {
        padding: 2rem 0;
    }

    .focus-card,
    .approach-item,
    .experience-item {
        page-break-inside: avoid;
    }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus,
.nav-toggle:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
        --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
    }
}