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

:root {
    --bg-primary: #1a2332;
    --bg-secondary: #263447;
    --bg-card: #2d3e50;
    --text-primary: #e5e7eb;
    --text-secondary: #9ca3af;
    --accent-primary: #5c7a99;
    --accent-green: #5cb85c;
    --accent-orange: #f0ad4e;
    --border-color: #374558;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Navigation */
.navbar {
    background-color: var(--bg-primary);
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s;
}

.logo:hover {
    color: var(--accent-primary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 35px;
}

.nav-menu li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

.nav-menu li a:hover {
    color: var(--text-primary);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 20px 60px;
    background: linear-gradient(135deg, #1a2332 0%, #263447 100%);
}

.hero-content {
    max-width: 900px;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #cbd5e1;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: 30px;
    color: var(--text-primary);
}

.hero-description {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-description strong {
    color: var(--text-primary);
    font-weight: 600;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    padding: 16px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: #6b8aaa;
    border-color: #6b8aaa;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

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

.btn-secondary:hover {
    background-color: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.btn-outline {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 12px 28px;
    font-size: 0.95rem;
}

.btn-outline:hover {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

/* Sections */
section {
    padding: 100px 20px;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
}

.section-title-wrapper {
    display: inline-flex;
    align-items: center;
    gap: 15px;
    position: relative;
    padding-bottom: 20px;
}

.section-title-wrapper::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-primary) 20%, var(--accent-primary) 80%, transparent);
}

.section-icon {
    font-size: 2.5rem;
}

.section-title {
    font-size: 2.8rem;
    margin: 0;
    color: var(--text-primary);
    font-weight: 700;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-top: 15px;
    font-size: 1.15rem;
}

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

.about-content {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 60px;
    align-items: start;
}

.about-image {
    display: flex;
    justify-content: center;
}

.image-placeholder {
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4b5563 0%, #374151 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.emoji {
    font-size: 6rem;
}

.about-text p {
    margin-bottom: 20px;
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1.05rem;
}

.about-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

.stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.stat-card {
    background-color: var(--bg-card);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s ease;
}

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

.stat-card h3 {
    font-size: 2.8rem;
    margin-bottom: 10px;
    color: var(--text-primary);
    font-weight: 700;
}

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

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.project-card {
    background-color: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.project-card:hover {
    transform: scale(1.05);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.project-image {
    position: relative;
    overflow: hidden;
    height: 250px;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-status {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 8px 18px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.project-status.released {
    background-color: var(--accent-green);
    color: white;
}

.project-status.development {
    background-color: var(--accent-orange);
    color: white;
}

.project-content {
    padding: 35px;
}

.project-content h3 {
    font-size: 1.9rem;
    margin-bottom: 15px;
    color: var(--text-primary);
    font-weight: 700;
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: 25px;
    line-height: 1.8;
    font-size: 1rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 25px;
}

.tag {
    background-color: var(--bg-secondary);
    padding: 7px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

/* Applications Section */
.applications {
    background-color: var(--bg-secondary);
}

/* Skills Section */
.skills-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 80px;
    margin-top: 50px;
}

.technical-skills h3,
.specializations h3 {
    font-size: 2rem;
    margin-bottom: 35px;
    color: var(--text-primary);
    font-weight: 700;
}

.skill-item {
    margin-bottom: 28px;
}

.skill-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    color: var(--text-secondary);
    font-weight: 500;
}

.skill-bar {
    height: 10px;
    background-color: var(--bg-secondary);
    border-radius: 10px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), #6b8aaa);
    border-radius: 10px;
    transition: width 1.5s ease;
}

.spec-card {
    background-color: var(--bg-card);
    padding: 30px;
    border-radius: 12px;
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}

.spec-card:hover {
    transform: translateX(10px);
}

.spec-icon {
    font-size: 2.8rem;
    display: block;
    margin-bottom: 15px;
}

.spec-card h4 {
    font-size: 1.4rem;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 600;
}

.spec-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1rem;
}

/* Contact Section */
.contact {
    background-color: var(--bg-secondary);
}

.contact-intro {
    text-align: center;
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 60px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.contact-card {
    background-color: var(--bg-card);
    padding: 50px 40px;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.contact-card:hover {
    transform: translateY(-10px);
}

.contact-icon {
    font-size: 3.5rem;
    display: block;
    margin-bottom: 20px;
}

.contact-card h3 {
    font-size: 1.6rem;
    margin-bottom: 15px;
    color: var(--text-primary);
    font-weight: 600;
}

.contact-card p {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.cv-link {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

.cv-link:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

/* Footer */
.footer {
    background-color: var(--bg-primary);
    padding: 40px 20px;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

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

/* Project Detail Pages */
.project-detail {
    padding: 100px 20px 60px;
    min-height: 100vh;
    background-color: var(--bg-primary);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1rem;
    margin-bottom: 40px;
    transition: color 0.3s;
}

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

.project-detail-header {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    align-items: start;
    gap: 60px;
    margin-bottom: 80px;
}

.project-detail-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.project-label {
    display: inline-block;
    background-color: var(--accent-green);
    color: white;
    padding: 8px 18px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    width: fit-content;
}

.project-label.development {
    background-color: var(--accent-orange);
}

.project-detail-title {
    font-size: 3rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
}

.project-detail-description {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.project-detail-image {
    text-align: center;
}

.project-detail-image img {
    max-width: 100%;
    border-radius: 16px;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.4);
}

/* Detail sections */
.detail-section {
    margin-bottom: 70px;
}

.detail-section h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    color: var(--text-primary);
    font-weight: 700;
    text-align: center;
}

.detail-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1.05rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

.feature-item {
    background-color: var(--bg-card);
    padding: 25px;
    border-radius: 12px;
    display: flex;
    align-items: start;
    gap: 15px;
}

.checkmark {
    font-size: 1.5rem;
    color: var(--accent-green);
    flex-shrink: 0;
}

.feature-item p {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.6;
}

.feature-item strong {
    color: var(--text-primary);
}

.tech-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.tech-item {
    background-color: var(--bg-card);
    padding: 20px 25px;
    border-radius: 10px;
    color: var(--text-secondary);
    font-size: 1rem;
}

.tech-item strong {
    color: var(--text-primary);
}

.challenges-outcome {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.challenges-outcome h2 {
    font-size: 2.2rem;
    margin-bottom: 20px;
    text-align: left;
}

/* CV Page Styles */
.cv-page {
    background-color: var(--bg-primary);
    min-height: 100vh;
    padding-top: 80px;
}

.cv-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 60px 20px;
}

.cv-header {
    text-align: center;
    margin-bottom: 60px;
}

.cv-header h1 {
    font-size: 3.5rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.cv-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 25px;
}

.cv-contact-info {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    color: var(--text-secondary);
    font-size: 1rem;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background-color: var(--accent-primary);
    color: white;
    padding: 14px 32px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    margin-top: 30px;
    transition: all 0.3s ease;
}

.download-btn:hover {
    background-color: #6b8aaa;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.cv-section {
    margin-bottom: 60px;
}

.cv-section h2 {
    font-size: 2rem;
    margin-bottom: 30px;
    color: var(--text-primary);
    font-weight: 700;
}

.cv-card {
    background-color: var(--bg-card);
    padding: 30px;
    border-radius: 12px;
    margin-bottom: 20px;
}

.cv-card h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.cv-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.cv-skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.cv-skill-item {
    background-color: var(--bg-card);
    padding: 15px 20px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cv-skill-item span:first-child {
    color: var(--text-primary);
    font-weight: 500;
}

.cv-skill-item span:last-child {
    color: var(--text-secondary);
}

.cv-project-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.cv-project-item {
    background-color: var(--bg-card);
    padding: 25px;
    border-radius: 12px;
}

.cv-project-item h3 {
    font-size: 1.4rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.cv-project-item p {
    color: var(--text-secondary);
    margin: 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .project-detail-header,
    .challenges-outcome {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .project-detail-image img {
        max-width: 90%;
    }

    .skills-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }

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

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 2.2rem;
    }

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

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

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

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

    .stats {
        max-width: 500px;
        margin: 40px auto 0;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

    .cv-header h1 {
        font-size: 2.5rem;
    }

    .project-detail-title {
        font-size: 2rem;
    }
}