/**
 * Main Stylesheet
 *
 * @package PortfolioTheme
 * @since 1.0.0
 */

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

:root {
    --primary-bg: #0A0A0A;
    --secondary-bg: #1A1A1A;
    --primary-text: #FFFFFF;
    --secondary-text: #A0A0A0;
    --accent-red: #E63946;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Roboto', 'Open Sans', sans-serif;
    background-color: var(--primary-bg);
    color: var(--primary-text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', 'Inter', sans-serif;
    font-weight: 600;
    line-height: 1.2;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-text);
}

/* Header */
.header {
    background-color: var(--secondary-bg);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: nowrap;
    gap: 2rem;
}

.logo {
    flex-shrink: 0;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-text);
    font-weight: 700;
    margin: 0;
}

.logo h1 a {
    color: var(--primary-text);
    text-decoration: none;
}

.nav {
    display: flex;
    flex-direction: row;
    align-items: center;
    flex: 1;
    justify-content: flex-end;
    gap: 2rem;
    position: relative;
}

.nav-menu {
    display: flex;
    flex-direction: row;
    gap: 2rem;
    flex-wrap: nowrap;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    position: relative;
}

/* 确保所有一级菜单项（包括包装器）都有正确的间距 */
.nav-menu > * {
    margin: 0;
    padding: 0;
}

/* 菜单项包装器（用于包含一级菜单和二级菜单） */
.nav-menu-item-wrapper {
    position: relative;
    display: inline-flex;
    align-items: center;
    margin: 0;
    padding: 0;
}

/* 一级菜单项 */
.nav-menu > .nav-link,
.nav-menu > a,
.nav-menu > .nav-menu-item-wrapper > .nav-link {
    color: var(--secondary-text);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
    display: inline-block;
    padding: 0.5rem 0;
    font-weight: 500;
    white-space: nowrap;
    margin: 0;
}

.nav-menu > .nav-link:hover,
.nav-menu > .nav-link.active,
.nav-menu > a:hover,
.nav-menu > a.active,
.nav-menu > .nav-menu-item-wrapper > .nav-link:hover,
.nav-menu > .nav-menu-item-wrapper > .nav-link.active {
    color: var(--primary-text);
}

.nav-menu > .nav-link::after,
.nav-menu > a::after,
.nav-menu > .nav-menu-item-wrapper > .nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-red);
    transition: var(--transition);
}

.nav-menu > .nav-link:hover::after,
.nav-menu > .nav-link.active::after,
.nav-menu > a:hover::after,
.nav-menu > a.active::after,
.nav-menu > .nav-menu-item-wrapper > .nav-link:hover::after,
.nav-menu > .nav-menu-item-wrapper > .nav-link.active::after {
    width: 100%;
}

/* 有子菜单的菜单项 */
.nav-link.has-submenu {
    position: relative;
}

.nav-link.has-submenu i {
    font-size: 0.7rem;
    margin-left: 0.25rem;
    transition: var(--transition);
    vertical-align: middle;
}

.nav-link.has-submenu:hover i {
    transform: rotate(180deg);
}

/* 二级菜单容器 */
.nav-menu-item-wrapper {
    position: relative;
    display: inline-block;
}

/* 二级菜单样式 */
.nav-menu-item-wrapper .sub-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    background-color: var(--secondary-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    padding: 0.5rem 0;
    margin: 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    list-style: none;
    display: block;
}

/* 显示二级菜单 - 当鼠标悬停在菜单项包装器上时 */
.nav-menu-item-wrapper:hover .sub-menu,
.nav-menu-item-wrapper .nav-link.has-submenu:hover ~ .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 二级菜单项 */
.sub-menu-item {
    margin: 0;
    padding: 0;
    list-style: none;
}

.sub-menu-link {
    display: block;
    padding: 0.75rem 1.5rem;
    color: var(--secondary-text);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
}

.sub-menu-link:hover,
.sub-menu-link.active {
    color: var(--primary-text);
    background-color: rgba(230, 57, 70, 0.1);
    padding-left: 2rem;
}

/* 兼容旧代码 */
.nav a {
    color: var(--secondary-text);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
}

.nav a:hover,
.nav a.active {
    color: var(--primary-text);
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-red);
    transition: var(--transition);
}

.nav a:hover::after,
.nav a.active::after {
    width: 100%;
}

.cta-button {
    background-color: var(--accent-red);
    color: var(--primary-text);
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    transition: var(--transition);
    white-space: nowrap;
}

.cta-button-desktop {
    display: inline-block;
    flex-shrink: 0;
}

.cta-button:hover {
    background-color: #c92e3d;
    transform: scale(1.05);
}

/* Mobile Menu Toggle Button */
.menu-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
    position: relative;
}

.menu-toggle-icon {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 24px;
    height: 18px;
}

.menu-toggle-icon span {
    display: block;
    height: 2px;
    width: 100%;
    background-color: var(--primary-text);
    border-radius: 2px;
    transition: var(--transition);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-icon span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-icon span:nth-child(2) {
    opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-toggle-icon span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Hero Section */
.hero {
    padding: 8rem 0 10rem;
    background: linear-gradient(135deg, var(--primary-bg) 0%, var(--secondary-bg) 100%);
    min-height: 60vh;
    display: flex;
    align-items: center;
}

.hero-content {
    text-align: center;
}

.hero-title {
    font-size: 4.5rem;
    margin-bottom: 2rem;
    color: var(--primary-text);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--secondary-text);
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Services Section */
.services {
    padding: 8rem 0;
    background-color: var(--secondary-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
    margin-top: 4rem;
}

.service-card {
    background-color: var(--primary-bg);
    padding: 3.5rem 2.5rem;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-red);
    box-shadow: 0 10px 30px rgba(230, 57, 70, 0.2);
}

.service-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 2rem;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid rgba(230, 57, 70, 0.2);
}

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

.service-card h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-text);
}

.service-card p {
    color: var(--secondary-text);
    font-size: 1.1rem;
    line-height: 1.7;
}

/* Portfolio Section */
.portfolio {
    padding: 5rem 0;
    background-color: var(--primary-bg);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    aspect-ratio: 4/3;
    cursor: pointer;
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.portfolio-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(10, 10, 10, 0.95), transparent);
    padding: 2rem;
    transform: translateY(100%);
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
    transform: translateY(0);
}

.portfolio-item:hover img {
    transform: scale(1.1);
}

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

.portfolio-overlay p {
    color: var(--secondary-text);
    margin-bottom: 1rem;
}

.portfolio-link {
    color: var(--accent-red);
    text-decoration: none;
    font-weight: 500;
    position: relative;
}

.portfolio-link::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-red);
    transition: var(--transition);
}

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

/* Resume Section */
.resume {
    padding: 5rem 0;
    background-color: var(--secondary-bg);
}

.tabs-container {
    background-color: var(--primary-bg);
    border-radius: 10px;
    padding: 2rem;
}

.tabs-nav {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--secondary-bg);
    flex-wrap: wrap;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--secondary-text);
    padding: 1rem 2rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    font-family: inherit;
}

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

.tab-btn:hover {
    color: var(--primary-text);
}

.tab-btn.active {
    color: var(--accent-red);
}

.tab-btn.active::after {
    width: 100%;
}

.tabs-content {
    min-height: 400px;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-pane.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 2rem;
}

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

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

.timeline-item::before {
    content: '';
    position: absolute;
    left: -1.5rem;
    top: 0.5rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--accent-red);
    border: 3px solid var(--primary-bg);
}

.timeline-year {
    color: var(--accent-red);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

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

.company {
    color: var(--accent-red);
    font-weight: 500;
    margin-bottom: 0.5rem;
    display: block;
}

.timeline-content p {
    color: var(--secondary-text);
}

/* Skills */
.skills-grid {
    display: grid;
    gap: 2rem;
}

.skill-item {
    margin-bottom: 1.5rem;
}

.skill-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.skill-header span {
    color: var(--primary-text);
    font-weight: 500;
}

.skill-percent {
    color: var(--accent-red);
}

.skill-bar {
    height: 8px;
    background-color: var(--secondary-bg);
    border-radius: 5px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background-color: var(--accent-red);
    border-radius: 5px;
    transition: width 1s ease;
}

/* Education */
.education-list {
    display: grid;
    gap: 2rem;
}

.education-item {
    background-color: var(--secondary-bg);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent-red);
}

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

.school {
    color: var(--accent-red);
    font-weight: 500;
    margin-bottom: 0.5rem;
    display: block;
}

.year {
    color: var(--secondary-text);
}

/* Projects */
.project-list {
    display: grid;
    gap: 2rem;
}

.project-item {
    background-color: var(--secondary-bg);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent-red);
}

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

.project-result {
    color: var(--accent-red);
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: block;
}

.project-item p {
    color: var(--secondary-text);
}

/* Testimonials */
.testimonials {
    padding: 5rem 0;
    background-color: var(--primary-bg);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background-color: var(--secondary-bg);
    padding: 2rem;
    border-radius: 10px;
    border-top: 4px solid var(--accent-red);
}

.testimonial-quote {
    color: var(--primary-text);
    font-style: italic;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.testimonial-author strong {
    display: block;
    color: var(--primary-text);
    margin-bottom: 0.25rem;
}

.testimonial-author span {
    color: var(--secondary-text);
    font-size: 0.9rem;
}

/* Toolbox */
.toolbox {
    padding: 5rem 0;
    background-color: var(--secondary-bg);
}

.toolbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.tool-item {
    background-color: var(--primary-bg);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.tool-item:hover {
    transform: translateY(-5px);
    border-color: var(--accent-red);
}

.tool-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

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

.tool-item p {
    color: var(--secondary-text);
    font-size: 0.9rem;
}

/* Pricing */
.pricing {
    padding: 5rem 0;
    background-color: var(--primary-bg);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.pricing-card {
    background-color: var(--secondary-bg);
    padding: 2.5rem;
    border-radius: 10px;
    text-align: center;
    position: relative;
    border: 2px solid transparent;
    transition: var(--transition);
}

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

.pricing-card.featured {
    border-color: var(--accent-red);
    transform: scale(1.05);
}

.badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--accent-red);
    color: var(--primary-text);
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-text);
}

.price {
    margin-bottom: 2rem;
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
}

.currency {
    font-size: 1.5rem;
    color: var(--secondary-text);
}

.amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-text);
}

.period {
    font-size: 1rem;
    color: var(--secondary-text);
}

.features-list {
    list-style: none;
    text-align: left;
    margin-bottom: 2rem;
}

.features-list li {
    padding: 0.75rem 0;
    color: var(--secondary-text);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.features-list li::before {
    content: '✓';
    color: var(--accent-red);
    font-weight: bold;
    margin-right: 0.5rem;
}

.pricing-btn {
    display: inline-block;
    width: 100%;
    padding: 1rem;
    background-color: var(--accent-red);
    color: var(--primary-text);
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.pricing-btn:hover {
    background-color: #c92e3d;
    transform: scale(1.05);
}

/* Blog */
.blog {
    padding: 5rem 0;
    background-color: var(--secondary-bg);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.blog-card {
    background-color: var(--primary-bg);
    border-radius: 10px;
    overflow: hidden;
    transition: var(--transition);
}

.blog-card:hover {
    transform: translateY(-5px);
}

.blog-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.blog-content {
    padding: 1.5rem;
}

.blog-date {
    color: var(--accent-red);
    font-size: 0.9rem;
    font-weight: 500;
}

.blog-content h3 {
    color: var(--primary-text);
    margin: 0.75rem 0;
    font-size: 1.25rem;
}

.blog-content p {
    color: var(--secondary-text);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.blog-link {
    color: var(--accent-red);
    text-decoration: none;
    font-weight: 500;
    position: relative;
}

.blog-link::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-red);
    transition: var(--transition);
}

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

.blog-cta {
    text-align: center;
}

.btn-secondary {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: transparent;
    color: var(--accent-red);
    text-decoration: none;
    border: 2px solid var(--accent-red);
    border-radius: 5px;
    font-weight: 500;
    transition: var(--transition);
}

.btn-secondary:hover {
    background-color: var(--accent-red);
    color: var(--primary-text);
    transform: scale(1.05);
}

/* Contact */
.contact {
    padding: 5rem 0;
    background-color: var(--primary-bg);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h3 {
    color: var(--primary-text);
    margin-bottom: 2rem;
    font-size: 1.5rem;
}

.contact-item {
    margin-bottom: 2rem;
}

.contact-item strong {
    display: block;
    color: var(--accent-red);
    margin-bottom: 0.5rem;
}

.contact-item a,
.contact-item span {
    color: var(--secondary-text);
    text-decoration: none;
    transition: var(--transition);
}

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background-color: var(--secondary-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    color: var(--primary-text);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-red);
}

.form-group textarea {
    resize: vertical;
}

.btn-primary {
    padding: 1rem 2rem;
    background-color: var(--accent-red);
    color: var(--primary-text);
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.btn-primary:hover {
    background-color: #c92e3d;
    transform: scale(1.05);
}

/* Footer */
.footer {
    background-color: var(--secondary-bg);
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-content p {
    color: var(--secondary-text);
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    color: var(--secondary-text);
    text-decoration: none;
    transition: var(--transition);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        padding: 5rem 0 6rem;
        min-height: 50vh;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .services {
        padding: 5rem 0;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .service-card {
        padding: 2.5rem 2rem;
    }

    .service-icon {
        width: 100px;
        height: 100px;
    }

    .service-card h3 {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: 2rem;
    }

    /* Mobile Menu Styles */
    .menu-toggle {
        display: block;
    }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background-color: var(--secondary-bg);
        flex-direction: column;
        align-items: flex-start;
        padding: 5rem 2rem 2rem;
        gap: 0;
        transition: right 0.3s ease;
        z-index: 1000;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.3);
        overflow-y: auto;
    }

    .nav.menu-open {
        right: 0;
    }

    .nav-menu {
        flex-direction: column;
        width: 100%;
        gap: 0;
        align-items: flex-start;
    }

    .nav-menu > .nav-link,
    .nav-menu > a,
    .nav-menu > .nav-menu-item-wrapper {
        width: 100%;
        padding: 1rem 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-menu > .nav-link,
    .nav-menu > a,
    .nav-menu > .nav-menu-item-wrapper > .nav-link {
        padding: 1rem 0;
        width: 100%;
    }

    .nav-menu-item-wrapper .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding: 0.5rem 0 0.5rem 1.5rem;
        margin-top: 0.5rem;
        background-color: transparent;
        min-width: auto;
        width: 100%;
    }

    .sub-menu-link {
        padding: 0.5rem 0;
    }

    .cta-button-desktop {
        display: none;
    }

    /* Overlay for mobile menu */
    .menu-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.7);
        z-index: 999;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .menu-overlay.active {
        display: block;
        opacity: 1;
    }

    .services-grid,
    .portfolio-grid,
    .pricing-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .pricing-card.featured {
        transform: none;
    }

    .tabs-nav {
        flex-direction: column;
    }

    .tab-btn {
        width: 100%;
        text-align: left;
    }

    .timeline {
        padding-left: 1.5rem;
    }

    .timeline-item {
        padding-left: 2rem;
    }
}

@media (max-width: 480px) {
    .header-content {
        flex-wrap: nowrap;
        justify-content: space-between;
    }

    .logo {
        flex: 0 0 auto;
    }

    .menu-toggle {
        order: 2;
    }

    .nav {
        width: 85%;
        max-width: 280px;
    }

    .cta-button-desktop {
        display: none;
    }

    .hero {
        padding: 3rem 0 4rem;
        min-height: 40vh;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .services {
        padding: 4rem 0;
    }

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

/* Screen Reader Text */
.screen-reader-text {
    clip: rect(1px, 1px, 1px, 1px);
    position: absolute !important;
    height: 1px;
    width: 1px;
    overflow: hidden;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: #000;
    color: #fff;
    padding: 8px 16px;
    z-index: 999999;
}

.skip-link:focus {
    top: 0;
}

/* ============================================
   About Page Styles
   ============================================ */

:root {
    --bg-black: #050505;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary-text);
    margin-bottom: 0.5rem;
}

.section-header p {
    color: var(--secondary-text);
    font-size: 1.1rem;
}

/* About Hero */
.about-hero {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--primary-bg) 0%, #0a0a0a 100%);
}

.about-hero .hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(230, 57, 70, 0.1) 0%, transparent 100%);
    pointer-events: none;
}

.about-hero .hero-text {
    max-width: 600px;
}

.about-hero .hero-title {
    font-size: 3rem;
    color: var(--primary-text);
    margin-bottom: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
}

.about-hero .hero-subtitle {
    font-size: 1.15rem;
    color: var(--secondary-text);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.about-hero .hero-subtitle strong {
    color: var(--accent-red);
    font-weight: 600;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-item .stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-red);
    margin-bottom: 0.5rem;
    font-family: 'Montserrat', sans-serif;
}

.stat-item .stat-label {
    color: var(--secondary-text);
    font-size: 0.9rem;
}

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

/* Story Section */
.story-section {
    padding: 6rem 0;
    background-color: #0a0a0a;
}

.story-content {
    max-width: 900px;
    margin: 0 auto;
}

.story-text p {
    color: var(--secondary-text);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

/* Stats Section */
.stats-section {
    padding: 6rem 0;
    background-color: var(--primary-bg);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.stat-card {
    background-color: #0a0a0a;
    padding: 3rem 2rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    transition: var(--transition);
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    background-color: rgba(230, 57, 70, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon i {
    font-size: 1.5rem;
    color: var(--accent-red);
}

.stat-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-red);
    margin-bottom: 0.5rem;
    font-family: 'Montserrat', sans-serif;
}

.stat-label {
    color: var(--secondary-text);
    font-size: 1rem;
}

/* Skills Section */
.skills-section {
    padding: 6rem 0;
    background-color: #0a0a0a;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.skill-category {
    background-color: var(--primary-bg);
    padding: 2.5rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.skill-category h3 {
    color: var(--accent-red);
    margin-bottom: 2rem;
    font-size: 1.5rem;
}

.skill-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.skill-item {
    margin-bottom: 0;
}

.skill-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.skill-header span {
    color: var(--primary-text);
    font-weight: 500;
}

.skill-percent {
    color: var(--accent-red);
    font-weight: 600;
}

.skill-bar {
    height: 8px;
    background-color: #0a0a0a;
    border-radius: 5px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background-color: var(--accent-red);
    border-radius: 5px;
    width: 0;
    transition: width 1.5s ease;
}

/* Experience Section */
.experience-section {
    padding: 6rem 0;
    background-color: var(--primary-bg);
}

.experience-section .timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    padding-left: 3rem;
}

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

.experience-section .timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 3rem;
}

.experience-section .timeline-item::before {
    content: '';
    position: absolute;
    left: -1.5rem;
    top: 0.5rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--accent-red);
    border: 3px solid var(--primary-bg);
}

.timeline-year {
    color: var(--accent-red);
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.timeline-content h3 {
    color: var(--primary-text);
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.company {
    color: var(--accent-red);
    font-weight: 500;
    margin-bottom: 0.75rem;
    display: block;
}

.timeline-content p {
    color: var(--secondary-text);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.timeline-achievements {
    list-style: none;
    margin-top: 1rem;
}

.timeline-achievements li {
    color: var(--secondary-text);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.timeline-achievements li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-red);
    font-weight: bold;
}

/* Education Section */
.education-section {
    padding: 6rem 0;
    background-color: #0a0a0a;
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.education-card {
    background-color: var(--primary-bg);
    padding: 2.5rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    transition: var(--transition);
}

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

.edu-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    background-color: rgba(230, 57, 70, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.edu-icon i {
    font-size: 1.5rem;
    color: var(--accent-red);
}

.education-card h3 {
    color: var(--primary-text);
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.edu-school {
    color: var(--accent-red);
    font-weight: 500;
    margin-bottom: 0.5rem;
    display: block;
}

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

/* Values Section */
.values-section {
    padding: 6rem 0;
    background-color: var(--primary-bg);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.value-card {
    background-color: #0a0a0a;
    padding: 2.5rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    transition: var(--transition);
}

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

.value-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    background-color: rgba(230, 57, 70, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.value-icon i {
    font-size: 1.5rem;
    color: var(--accent-red);
}

.value-card h3 {
    color: var(--primary-text);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.value-card p {
    color: var(--secondary-text);
    line-height: 1.8;
}

/* Services Overview Section */
.services-overview-section {
    padding: 6rem 0;
    background-color: #0a0a0a;
}

.services-overview-section .services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-overview-card {
    background-color: var(--primary-bg);
    padding: 2.5rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    transition: var(--transition);
}

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

.service-overview-card .service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background-color: rgba(230, 57, 70, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-overview-card .service-icon i {
    font-size: 2rem;
    color: var(--accent-red);
}

.service-overview-card h3 {
    color: var(--primary-text);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.service-overview-card p {
    color: var(--secondary-text);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.service-link {
    color: var(--accent-red);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.service-link:hover {
    gap: 0.75rem;
}

/* CTA Section */
.cta-section {
    padding: 6rem 0;
    background-color: var(--primary-bg);
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.5rem;
    color: var(--primary-text);
    margin-bottom: 1rem;
}

.cta-content p {
    color: var(--secondary-text);
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* About Page Responsive */
@media (max-width: 968px) {
    .about-hero .hero-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero-image {
        max-width: 400px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .about-hero .hero-title {
        font-size: 2rem;
    }

    .about-hero .hero-subtitle {
        font-size: 1rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

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

    .experience-section .timeline {
        padding-left: 2rem;
    }

    .experience-section .timeline-item {
        padding-left: 2rem;
    }

    .skills-grid,
    .values-grid,
    .services-overview-section .services-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .about-hero {
        padding: 4rem 0 3rem;
    }

    .story-section,
    .stats-section,
    .skills-section,
    .experience-section,
    .education-section,
    .values-section,
    .services-overview-section,
    .cta-section {
        padding: 4rem 0;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        text-align: center;
    }
}