/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* Header and Navigation */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

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

.nav-brand h1 {
    color: #2563eb;
    font-weight: 700;
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: #64748b;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #2563eb;
}

/* Main content */
main {
    padding-top: 80px;
}

/* Hero section */
.hero {
    display: flex;
    align-items: center;
    min-height: 80vh;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-content h2 {
    font-size: 3rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.25rem;
    color: #64748b;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-graphics {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 300px;
}

.security-icon {
    color: #2563eb;
    opacity: 0.9;
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    animation: float 3s ease-in-out infinite;
}

.network-icon {
    color: #1d4ed8;
    opacity: 0.7;
    position: absolute;
    top: 80px;
    right: 20px;
    animation: float 3s ease-in-out infinite 1s;
}

.shield-icon {
    color: #3b82f6;
    opacity: 0.8;
    position: absolute;
    bottom: 40px;
    left: 20px;
    animation: float 3s ease-in-out infinite 2s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background: #2563eb;
    color: white;
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: #2563eb;
    border-color: #2563eb;
}

.btn-secondary:hover {
    background: #2563eb;
    color: white;
    transform: translateY(-2px);
}

/* Sections */
.section {
    padding: 5rem 2rem;
}

.section-alt {
    background: #f8fafc;
}

.section h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 3rem;
}

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

.about-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.about-card h3 {
    color: #2563eb;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.about-card p {
    color: #64748b;
    line-height: 1.6;
}

.about-card a {
    color: #2563eb;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.about-card a:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

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

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border-left: 4px solid #2563eb;
    transition: transform 0.3s ease;
}

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

.service-card h3 {
    color: #1e293b;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.service-card p {
    color: #64748b;
}

/* Experience section */
.experience-timeline {
    max-width: 800px;
    margin: 0 auto;
}

.experience-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    padding: 2rem;
    background: white;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.experience-item:hover {
    transform: translateY(-5px);
}

.experience-year {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
    position: relative;
}

.experience-year::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    border-radius: 50%;
    z-index: -1;
    opacity: 0.3;
}

.experience-content {
    flex: 1;
}

.experience-content h3 {
    color: #1e293b;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.experience-content h4 {
    color: #2563eb;
    font-size: 1.1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.experience-content p {
    color: #64748b;
    margin-bottom: 1rem;
    line-height: 1.6;
}

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

.experience-content li {
    color: #64748b;
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.experience-content li:before {
    content: "▶";
    color: #2563eb;
    position: absolute;
    left: 0;
}

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

.skill-category {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
}

.skill-category h3 {
    color: #2563eb;
    font-size: 1.25rem;
    margin-bottom: 1rem;
    text-align: center;
}

.skill-category ul {
    list-style: none;
    padding: 0;
}

.skill-category li {
    color: #64748b;
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
}

.skill-category li:before {
    content: "•";
    color: #2563eb;
    position: absolute;
    left: 0;
    font-weight: bold;
}

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

.achievement-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    text-align: center;
    transition: transform 0.3s ease;
    border: 2px solid #e2e8f0;
    position: relative;
    overflow: hidden;
}

.achievement-card:hover {
    transform: translateY(-5px);
    border-color: #2563eb;
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.15);
}

.achievement-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #2563eb, #1d4ed8);
}

.achievement-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.achievement-card h3 {
    color: #1e293b;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.achievement-card p {
    color: #64748b;
    line-height: 1.6;
}

/* Contact section */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info h3,
.contact-form h3 {
    color: #1e293b;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.contact-info p {
    color: #64748b;
    margin-bottom: 2rem;
}

.contact-item {
    margin-bottom: 1rem;
    color: #64748b;
}

.contact-item strong {
    color: #1e293b;
}

.contact-item a {
    color: #2563eb;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

/* Form styles */
.contact-form form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-form input,
.contact-form textarea {
    padding: 0.75rem;
    border: 2px solid #e2e8f0;
    border-radius: 0.5rem;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #2563eb;
}

/* Footer */
.footer {
    background: #1e293b;
    color: white;
    text-align: center;
    padding: 2rem;
}

.footer p {
    color: #94a3b8;
}

/* About-me FAQ */
.section-heading {
    max-width: 680px;
    margin-bottom: 2.5rem;
}

.eyebrow {
    color: #2563eb;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    margin-bottom: 0.65rem;
    text-transform: uppercase;
}

.section-intro {
    color: #64748b;
    font-size: 1.05rem;
    margin-top: 0.75rem;
}

.faq-grid {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.faq-card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    padding: 1.5rem;
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.faq-card:hover {
    border-color: #93c5fd;
    transform: translateY(-2px);
}

.faq-card-featured {
    background: linear-gradient(135deg, #eff6ff, #fff);
    border-color: #93c5fd;
    grid-column: 1 / -1;
}

.faq-question {
    color: #0f172a;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.7rem;
}

.faq-answer {
    color: #475569;
    margin: 0;
}

.faq-answer span {
    color: #16a34a;
    font-weight: 800;
    letter-spacing: 0.08em;
}

/* Responsive design */
@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-grid,
    .services-grid,
    .skills-grid,
    .achievements-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .experience-item {
        flex-direction: column;
        text-align: center;
    }
    
    .experience-year {
        align-self: center;
        margin-bottom: 1rem;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 3rem 1rem;
    }
    
    .hero {
        padding: 2rem 1rem;
    }
    
    .hero-content h2 {
        font-size: 1.75rem;
    }
    
    .btn {
        padding: 0.5rem 1.5rem;
        font-size: 0.9rem;
    }
}