/* Modern Portfolio CSS - Version 2 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #2563eb;
    --primary-light: #3b82f6;
    --secondary: #f8fafc;
    --accent: #06b6d4;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;
    --border: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

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

/* Navigation */
.nav-bar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-brand {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

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

    .nav-link::after {
        content: '';
        position: absolute;
        bottom: -8px;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--primary);
        transition: var(--transition);
    }

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: white;
    position: relative;
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 6rem;
    align-items: center;
}

.hero-text {
    animation: fadeInUp 0.8s ease;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

    .hero-title .highlight {
        color: var(--primary);
        position: relative;
    }

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.5;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    min-width: 160px;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: var(--shadow-lg);
}

    .btn-primary:hover {
        background: var(--primary-light);
        transform: translateY(-2px);
        box-shadow: 0 20px 25px -5px rgba(37, 99, 235, 0.25);
    }

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

    .btn-secondary:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: rgba(37, 99, 235, 0.05);
    }

.btn-small {
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    min-width: 120px;
}

/* Hero Stats */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    display: block;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 0.8s ease 0.3s both;
}

.profile-card {
    background: white;
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    text-align: center;
    max-width: 400px;
    position: relative;
}

    .profile-card::before {
        content: '';
        position: absolute;
        top: -2px;
        left: -2px;
        right: -2px;
        bottom: -2px;
        background: #ddd;
        border-radius: 26px;
        z-index: -1;
    }

.profile-image {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: #ccc;
    margin: 0 auto 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    font-weight: 700;
}

.profile-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.profile-role {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.profile-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.skill-tag {
    background: white;
    color: var(--primary);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid #ddd;
}

/* Sections */
.section {
    padding: 6rem 0;
}

.section-alt {
    background: white;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.skill-category {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

    .skill-category:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-lg);
    }

.category-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

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

.skill-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.skill-name {
    font-weight: 600;
    color: var(--text-primary);
}

.skill-percentage {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.875rem;
}

.skill-bar {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: #ccc;
    width: 0;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 3px;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.project-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

    .project-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-lg);
    }

.project-image {
    height: 200px;
    background: #ccc;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
    font-weight: 700;
}

.project-content {
    padding: 2rem;
}

.project-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-tag {
    background: white;
    color: var(--primary);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid #ddd;
}

.project-links {
    display: flex;
    gap: 1rem;
}

/* Experience Timeline */
.experience-timeline {
    position: relative;
    margin-top: 3rem;
}

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

.experience-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 5rem;
}

.experience-icon {
    position: absolute;
    left: 1rem;
    top: 0.5rem;
    width: 2rem;
    height: 2rem;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    box-shadow: 0 0 0 4px var(--bg-primary);
}

.experience-content {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.experience-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.experience-company {
    color: var(--text-secondary);
    font-weight: 500;
}

.experience-period {
    color: var(--text-muted);
    font-size: 0.875rem;
    white-space: nowrap;
}

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

    .experience-description li {
        position: relative;
        padding-left: 1.5rem;
        margin-bottom: 0.5rem;
        color: var(--text-secondary);
        line-height: 1.6;
    }

        .experience-description li::before {
            content: '→';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: 600;
        }

/* Education Cards */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.education-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

    .education-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-lg);
    }

.education-icon {
    width: 80px;
    height: 80px;
    background: #ccc;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
    font-weight: 700;
}

.education-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.education-school {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.education-period {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.education-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

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

.contact-text h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.contact-text p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.contact-info {
    display: grid;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

    .contact-item:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }

.contact-icon {
    width: 50px;
    height: 50px;
    background: #ccc;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-details {
    flex: 1;
}

.contact-label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

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

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

    .contact-item a:hover {
        color: var(--primary-light);
    }

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

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

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
}

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

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

    .hero-subtitle {
        font-size: 1.25rem;
    }

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

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

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

    .experience-timeline::before {
        left: 1rem;
    }

    .experience-item {
        padding-left: 3rem;
    }

    .experience-icon {
        left: 0.5rem;
    }
}