/* Font imports for offline availability - Inter font family */
@font-face {
    font-family: 'Inter';
    src: url('fonts/Inter-Regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
}

@font-face {
    font-family: 'Inter';
    src: url('fonts/Inter-Light.woff2') format('woff2');
    font-weight: 300;
    font-style: normal;
}

@font-face {
    font-family: 'Inter';
    src: url('fonts/Inter-Medium.woff2') format('woff2');
    font-weight: 500;
    font-style: normal;
}

@font-face {
    font-family: 'Inter';
    src: url('fonts/Inter-SemiBold.woff2') format('woff2');
    font-weight: 600;
    font-style: normal;
}

@font-face {
    font-family: 'Inter';
    src: url('fonts/Inter-Bold.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
}

:root {
    --primary-blue: #1e40af;
    --secondary-blue: #3b82f6;
    --light-blue: #dbeafe;
    --dark-blue: #1e3a8a;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-white: #ffffff;
    --bg-gray: #f8fafc;
}

[data-theme="dark"] {
    --primary-blue: #3b82f6;
    --secondary-blue: #60a5fa;
    --light-blue: #1e3a8a;
    --dark-blue: #2563eb;
    --text-dark: #f3f4f6;
    --text-light: #9ca3af;
    --bg-white: #111827;
    --bg-gray: #1f2937;
}

[data-theme="dark"] nav {
    background: rgba(17, 24, 39, 0.98);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .hero {
    background: linear-gradient(135deg, #1e3a8a 0%, #111827 100%);
}

[data-theme="dark"] .contact-info,
[data-theme="dark"] .skill-category,
[data-theme="dark"] .education-card,
[data-theme="dark"] .timeline-content {
    background-color: var(--bg-gray);
    color: var(--text-dark);
}

[data-theme="dark"] .contact-form {
    background-color: var(--bg-gray);
    border-color: var(--light-blue);
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea {
    background-color: var(--bg-white);
    color: var(--text-dark);
    border-color: var(--bg-gray);
}

[data-theme="dark"] .skill-tag {
    background-color: var(--bg-gray);
    color: var(--text-dark);
}

[data-theme="dark"] .social-link {
    background-color: rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .timeline::before {
    background-color: var(--secondary-blue);
}

[data-theme="dark"] .timeline-dot {
    border-color: var(--bg-gray);
    box-shadow: 0 0 0 3px var(--secondary-blue);
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
}

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

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--secondary-blue);
}

/* Theme Toggle Button */
.theme-toggle {
    background: transparent;
    border: 2px solid var(--light-blue);
    border-radius: 8px;
    padding: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    background-color: var(--light-blue);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    fill: var(--text-dark);
}

[data-theme="dark"] .theme-toggle:hover {
    background-color: rgba(59, 130, 246, 0.2);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    transition: all 0.3s ease;
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    transition: all 0.3s ease;
    left: 0;
}

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

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

.menu-toggle.active .hamburger {
    background-color: transparent;
}

.menu-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.menu-toggle.active .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--bg-white) 100%);
    padding: 6rem 2rem;
}

.hero-content {
    max-width: 800px;
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.hero h2 {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.hero p {
    font-size: 1.125rem;
    color: var(--text-dark);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    background-color: var(--primary-blue);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn:hover {
    background-color: var(--dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-blue);
    color: var(--primary-blue);
    margin-left: 1rem;
}

.btn-outline:hover {
    background-color: var(--primary-blue);
    color: white;
}

/* Section Styles */
section {
    padding: 6rem 2rem;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 4rem;
    font-size: 1.125rem;
}

/* About Section */
.about {
    background-color: var(--bg-white);
}

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

.about-text h3 {
    font-size: 1.75rem;
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
}

.about-text p {
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.contact-info {
    background-color: var(--bg-gray);
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid var(--secondary-blue);
}

/* Contact Form Styles */
.contact-form-section {
    background-color: var(--bg-white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-intro h3 {
    font-size: 1.75rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.contact-intro p {
    color: var(--text-dark);
    margin-bottom: 2rem;
}

.contact-details-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background-color: var(--bg-gray);
    border-radius: 8px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background-color: var(--light-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-blue);
    font-size: 1.25rem;
}

.contact-form {
    background-color: white;
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--light-blue);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--bg-gray);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-blue);
    box-shadow: 0 0 0 3px var(--light-blue);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.submit-btn {
    width: 100%;
    padding: 1rem 2rem;
    background-color: var(--primary-blue);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    background-color: var(--dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
}

/* Experience Section */
.experience {
    background-color: var(--bg-gray);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background-color: var(--secondary-blue);
    border-radius: 2px;
}

.timeline-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4rem;
    position: relative;
}

.timeline-left,
.timeline-right {
    width: 45%;
}

.timeline-dot {
    position: absolute;
    left: 50%;
    top: 1.5rem;
    transform: translateX(-50%);
    width: 28px;
    height: 28px;
    background-color: var(--primary-blue);
    border-radius: 50%;
    border: 4px solid white;
    box-shadow: 0 0 0 3px var(--secondary-blue);
    z-index: 1;
}

.timeline-content {
    width: 100%;
    padding: 1.5rem;
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
}

.timeline-left .timeline-content {
    text-align: right;
}

.timeline-right .timeline-content {
    text-align: left;
}

.timeline-content h3 {
    font-size: 1.25rem;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.company {
    color: var(--secondary-blue);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.date {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.timeline-content ul {
    list-style: none;
    padding: 0;
}

.timeline-content li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.timeline-left .timeline-content li {
    padding-right: 1.5rem;
    padding-left: 0;
}

.timeline-content li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--secondary-blue);
}

.timeline-left .timeline-content li::before {
    content: '←';
    right: 0;
    left: auto;
}

/* Skills Section */
.skills {
    background-color: var(--bg-white);
}

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

.skill-category {
    background-color: var(--bg-gray);
    border-radius: 16px;
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.skill-category h3 {
    font-size: 1.25rem;
    color: var(--primary-blue);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.skill-category h3::before {
    content: '';
    width: 4px;
    height: 24px;
    background-color: var(--secondary-blue);
    border-radius: 2px;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    padding: 0.5rem 1rem;
    background-color: white;
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--text-dark);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.skill-tag:hover {
    background-color: var(--primary-blue);
    color: white;
    transform: translateY(-2px);
}

/* Education Section */
.education {
    background-color: var(--bg-gray);
}

.education-card {
    max-width: 800px;
    margin: 0 auto;
    background-color: white;
    border-radius: 16px;
    padding: 3rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
}

.education-card h3 {
    font-size: 1.5rem;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.degree {
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.specialization {
    color: var(--secondary-blue);
    margin-bottom: 1rem;
}

.education-date {
    color: var(--text-light);
    font-size: 0.875rem;
}

/* Footer */
footer {
    background-color: var(--primary-blue);
    color: white;
    padding: 4rem 2rem;
    text-align: center;
}

.footer-content {
    max-width: 600px;
    margin: 0 auto;
}

.footer-content h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.footer-content p {
    opacity: 0.9;
    margin-bottom: 2rem;
}

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

.social-link {
    width: 48px;
    height: 48px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .timeline {
        padding-left: 72px;
    }

    .timeline::before {
        left: 36px;
    }

    .timeline-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .timeline-left,
    .timeline-right {
        width: 100%;
    }

    .timeline-dot {
        display: none;
    }

    .timeline-content,
    .timeline-left .timeline-content,
    .timeline-right .timeline-content {
        text-align: left !important;
    }

    .timeline-content li::before,
    .timeline-left .timeline-content li::before {
        content: '';
    }

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

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--bg-white);
        flex-direction: column;
        padding: 1rem 0;
        gap: 0;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        display: none;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        padding: 1rem 2rem;
        border-bottom: 1px solid var(--bg-gray);
    }

    .nav-links a:hover {
        background-color: var(--light-blue);
    }
}

@media (max-width: 640px) {
    .hero h1 {
        font-size: 2rem;
    }

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

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

    .btn-outline {
        margin-left: 0;
        margin-top: 1rem;
        display: block;
    }

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