/* Custom Variables for Colors and Design System */
:root {
    --font-heading: 'Outfit', 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'Fira Code', monospace;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Variables */
.light-theme {
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-surface: #ffffff;
    --bg-navbar: rgba(248, 250, 252, 0.8);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --accent: #0046b4; /* Classic CV Link Blue */
    --accent-hover: #00368c;
    --accent-glow: rgba(0, 70, 180, 0.15);
    
    --border-color: rgba(15, 23, 42, 0.08);
    --border-hover: rgba(0, 70, 180, 0.2);
    
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    
    --badge-bg: #e2e8f0;
    --badge-text: #334155;
    
    --timeline-line: #cbd5e1;
}

/* Dark Theme Variables */
.dark-theme {
    --bg-primary: #080b11;
    --bg-secondary: #0f131a;
    --bg-surface: #141923;
    --bg-navbar: rgba(8, 11, 17, 0.85);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent: #6366f1; /* Modern Indigo */
    --accent-hover: #4f46e5;
    --accent-glow: rgba(99, 102, 241, 0.25);
    
    --border-color: rgba(248, 250, 252, 0.08);
    --border-hover: rgba(99, 102, 241, 0.25);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -2px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
    
    --badge-bg: #1e293b;
    --badge-text: #cbd5e1;
    
    --timeline-line: #334155;
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

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

/* Layout Utilities */
.container {
    width: 100%;
    max-width: 1140px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.grid {
    display: grid;
    gap: 1.5rem;
}

.section {
    padding: 6.5rem 0 3rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-subtitle {
    display: block;
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* Header & Glassmorphic Nav */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--bg-navbar);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.nav {
    height: 4.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

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

.nav-list {
    display: flex;
    align-items: center;
    column-gap: 2rem;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 0.25rem 0;
}

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

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

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

.nav-btn-contact {
    color: var(--accent) !important;
    border: 1px solid var(--accent);
    padding: 0.5rem 1.25rem !important;
    border-radius: 9999px;
    transition: background-color var(--transition-normal), color var(--transition-normal) !important;
}

.nav-btn-contact::after {
    display: none;
}

.nav-btn-contact:hover {
    background-color: var(--accent);
    color: #ffffff !important;
}

.nav-actions {
    display: flex;
    align-items: center;
    column-gap: 1.25rem;
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 1.25rem;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.theme-toggle:hover {
    background-color: var(--bg-secondary);
    border-color: var(--border-hover);
}

.sun-icon {
    display: none;
}

.dark-theme .sun-icon {
    display: block;
}

.dark-theme .moon-icon {
    display: none;
}

.nav-toggle, .nav-close {
    display: none;
    cursor: pointer;
    font-size: 1.25rem;
}

/* Button UI */
.btn {
    display: inline-flex;
    align-items: center;
    column-gap: 0.5rem;
    padding: 0.85rem 1.75rem;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background-color var(--transition-normal), transform var(--transition-normal), box-shadow var(--transition-normal);
}

.btn-primary {
    background-color: var(--accent);
    color: #ffffff;
    border: none;
    box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-secondary);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    padding-top: 9rem;
}

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

.hero-tag {
    display: inline-flex;
    align-items: center;
    column-gap: 0.5rem;
    background-color: var(--badge-bg);
    color: var(--badge-text);
    padding: 0.4rem 1rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.pulse-icon {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #10b981;
    display: inline-block;
    position: relative;
}

.pulse-icon::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: inherit;
    border-radius: inherit;
    top: 0;
    left: 0;
    animation: pulse 1.8s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(2.5);
        opacity: 0;
    }
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 0.75rem;
    letter-spacing: -1.5px;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 1.5rem;
}

.hero-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2.25rem;
    max-width: 540px;
}

.hero-buttons {
    display: flex;
    column-gap: 1rem;
    margin-bottom: 2.5rem;
}

.hero-socials {
    display: flex;
    column-gap: 1.25rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.social-link:hover {
    color: var(--accent);
    border-color: var(--accent);
    transform: translateY(-3px);
}

.hero-image-wrapper {
    position: relative;
    justify-self: center;
    width: 320px;
    height: 320px;
}

.hero-img-backdrop {
    position: absolute;
    top: 15px;
    left: 15px;
    right: -15px;
    bottom: -15px;
    background: linear-gradient(135deg, var(--accent), #a855f7);
    border-radius: 2rem;
    z-index: 1;
    filter: blur(10px);
    opacity: 0.3;
}

.hero-img-border {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 2rem;
    overflow: hidden;
    border: 4px solid var(--bg-surface);
    box-shadow: var(--shadow-lg);
    z-index: 2;
    transition: transform var(--transition-slow);
}

.hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-image-wrapper:hover .hero-img-border {
    transform: scale(1.03) rotate(2deg);
}

/* About / Biography Section */
.about-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
}

.about-text {
    max-width: 800px;
    margin: 0 auto;
}

.about-paragraph {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.about-info-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.info-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 1rem;
    text-align: center;
    transition: transform var(--transition-normal), border-color var(--transition-normal);
}

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

.card-icon {
    color: var(--accent);
    font-size: 2rem;
    margin-bottom: 1rem;
}

.info-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.info-card p {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.info-card span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Experience (Timeline Layout) */
.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 2rem;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background-color: var(--timeline-line);
    top: 0;
    bottom: 0;
    left: 7px;
}

.timeline-item {
    position: relative;
    margin-bottom: 3.5rem;
}

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

.timeline-marker {
    position: absolute;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: var(--bg-surface);
    border: 2px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    left: -29px;
    z-index: 2;
    color: var(--accent);
}

.timeline-marker i {
    width: 14px;
    height: 14px;
}

.timeline-content {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.timeline-content:hover {
    border-color: var(--accent);
    transform: translateX(5px);
}

.timeline-date {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.timeline-role {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.timeline-company {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

.timeline-location {
    font-weight: 400;
    color: var(--text-muted);
}

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

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

.timeline-tasks li:last-child {
    margin-bottom: 0;
}

/* Technical Skills */
.skills-grid {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.skills-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition-normal), transform var(--transition-normal);
}

.skills-card:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
}

.skills-card-header {
    display: flex;
    align-items: center;
    column-gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.skill-category-icon {
    color: var(--accent);
    width: 24px;
    height: 24px;
}

.skills-card-header h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
}

.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skills-tags span {
    display: inline-block;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.4rem 0.85rem;
    border-radius: 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.skills-card:hover .skills-tags span {
    background-color: var(--badge-bg);
    color: var(--text-primary);
}

/* Project Category Filters Removed */

/* Projects Grid */
.projects-grid {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 1.25rem;
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
}

.project-badge {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background-color: rgba(99, 102, 241, 0.15);
    color: #818cf8;
    border: 1px solid rgba(99, 102, 241, 0.3);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.3rem 0.85rem;
    border-radius: 9999px;
    z-index: 5;
}

.project-badge-research {
    background-color: rgba(6, 182, 212, 0.15);
    color: #22d3ee;
    border: 1px solid rgba(6, 182, 212, 0.3);
}

.project-info {
    padding: 2.25rem 2rem 2rem 2rem;
    display: flex;
    flex-direction: column;
    height: 100%;
    justify-content: space-between;
}

.project-title {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.project-desc {
    color: var(--text-secondary);
    font-size: 0.925rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.5rem;
}

.project-tech span {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-family: var(--font-mono);
    padding: 0.25rem 0.65rem;
    border-radius: 0.25rem;
}

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

.project-link-btn {
    display: inline-flex;
    align-items: center;
    column-gap: 0.35rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 0.45rem 1rem;
    border-radius: 0.5rem;
    transition: all var(--transition-fast);
}

.project-link-btn:hover {
    color: var(--accent);
    border-color: var(--accent);
    background-color: var(--bg-secondary);
}

.project-link-btn i {
    width: 16px;
    height: 16px;
}

/* Voluntary & Impact Cards */
.voluntary-grid {
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2rem;
}

.voluntary-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 1.25rem;
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), border-color var(--transition-normal);
}

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

.voluntary-icon-box {
    width: 3.5rem;
    height: 3.5rem;
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--accent);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.voluntary-icon {
    width: 28px;
    height: 28px;
}

.voluntary-card h3 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.voluntary-role {
    font-size: 0.85rem;
    font-family: var(--font-mono);
    color: var(--accent);
    margin-bottom: 1rem;
    font-weight: 600;
}

.voluntary-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Certifications & Awards Section */
.achievements-grid {
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2rem;
}

.achievement-card-box {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 1.25rem;
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow-sm);
}

.achievement-title-row {
    display: flex;
    align-items: center;
    column-gap: 0.75rem;
    margin-bottom: 1.75rem;
}

.achievement-title-row i {
    width: 28px;
    height: 28px;
    color: var(--accent);
}

.achievement-title-row h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
}

.achievement-list {
    display: flex;
    flex-direction: column;
    row-gap: 1.25rem;
}

.achievement-list li {
    display: flex;
    flex-direction: column;
    padding-left: 1.25rem;
    position: relative;
}

.achievement-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--accent);
}

.achievement-list li strong {
    font-size: 0.975rem;
    font-weight: 600;
    color: var(--text-primary);
}

.achievement-list li span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Contact Section */
.contact-wrapper {
    grid-template-columns: 0.8fr 1.2fr;
    gap: 3rem;
    align-items: start;
}

.contact-info h3 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    row-gap: 1.5rem;
}

.contact-detail-item {
    display: flex;
    align-items: center;
    column-gap: 1.25rem;
}

.contact-detail-item i {
    width: 2.75rem;
    height: 2.75rem;
    background-color: var(--bg-secondary);
    color: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
}

.contact-detail-item div span {
    display: block;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
}

.contact-detail-item div a, .contact-detail-item div p {
    font-size: 0.95rem;
    font-weight: 600;
}

.contact-detail-item div a:hover {
    color: var(--accent);
}

.contact-form {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 1.25rem;
    box-shadow: var(--shadow-md);
}

.form-group {
    grid-template-columns: 1fr 1fr;
}

.form-input-wrapper {
    display: flex;
    flex-direction: column;
    margin-bottom: 1.5rem;
}

.form-input-wrapper label {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.form-input-wrapper input, .form-input-wrapper textarea {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.85rem 1rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition-fast);
}

.form-input-wrapper input:focus, .form-input-wrapper textarea:focus {
    border-color: var(--accent);
}

.form-submit-btn {
    width: 100%;
    justify-content: center;
    padding: 1rem;
}

.form-message {
    margin-top: 1rem;
    text-align: center;
    font-size: 0.9rem;
    font-weight: 600;
}

.form-message.success {
    color: #10b981;
}

.form-message.error {
    color: #ef4444;
}

/* Footer Section */
.footer-bottom {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 4rem 0;
    margin-top: 5rem;
}

.footer-content {
    grid-template-columns: 1.2fr 0.8fr;
    row-gap: 2rem;
}

.footer-brand h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
}

.footer-brand h3 span {
    color: var(--accent);
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    max-width: 320px;
}

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

.footer-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

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

.footer-copy {
    grid-column: 1 / -1;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Responsive Breakpoints */
@media screen and (max-width: 968px) {
    .hero-container {
        grid-template-columns: 1fr;
        row-gap: 3.5rem;
        text-align: center;
    }
    
    .hero-content {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
        row-gap: 3rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .footer-links {
        justify-self: center;
    }
}

@media screen and (max-width: 768px) {
    .section {
        padding: 5rem 0 2rem 0;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        height: 100vh;
        background-color: var(--bg-surface);
        box-shadow: var(--shadow-lg);
        padding: 6rem 2.5rem;
        transition: right var(--transition-normal);
        z-index: 101;
        border-left: 1px solid var(--border-color);
        display: flex;
        flex-direction: column;
    }
    
    .nav-menu.show-menu {
        right: 0;
    }
    
    .nav-list {
        flex-direction: column;
        row-gap: 2.25rem;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-close {
        display: flex;
        position: absolute;
        top: 1.5rem;
        right: 1.5rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .about-info-cards {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .form-group {
        grid-template-columns: 1fr;
    }
}

@media screen and (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        row-gap: 1rem;
        width: 100%;
    }
    
    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }
}