/* Global Reset & Variables */
:root {
    --color-bg: #ffffff;
    --color-text: #1f2937;
    --color-text-light: #4b5563;
    --color-border: #e5e7eb;
    --color-primary: #6366f1;
    --color-primary-hover: #4f46e5;
    --color-accent: #8b5cf6;
    --color-section-alt: #f9f5ff;
    --color-section-accent: #ede9fe;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    font-size: 16px;
}

.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Header & Navbar */
.header {
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
    position: sticky;
    top: 0;
    background: var(--color-bg);
    z-index: 100;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.navbar {
    padding: var(--spacing-sm) 0;
}

.nav-container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.5px;
}

.headline {
    font-size: 0.95rem;
    color: var(--color-text-light);
    font-weight: 500;
}

/* Main Sections */
main {
    min-height: calc(100vh - 120px);
}

section {
    padding: var(--spacing-xxl) 0;
}

section > .container > h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text);
    letter-spacing: -0.5px;
    text-align: center;
}

section p {
    font-size: 1.05rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #ffffff 0%, #f9f5ff 100%);
    padding: 80px 20px;
    text-align: center;
}

.hero-content h2 {
    font-size: 3.2rem;
    margin-bottom: 20px;
    color: var(--color-text);
    line-height: 1.2;
    letter-spacing: -0.8px;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: -0.3px;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-light);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 13px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

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

.btn-secondary:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* About Section */
.about {
    background: #ffffff;
    padding: 80px 20px;
}

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

.about-text h2 {
    font-size: 2.2rem;
    margin-bottom: 25px;
    color: var(--color-text);
    letter-spacing: -0.5px;
}

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

.about-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.stat {
    background: linear-gradient(135deg, #f9f5ff, #ede9fe);
    padding: 30px;
    border-radius: 12px;
    border-left: 5px solid var(--color-primary);
    text-align: center;
    transition: all 0.3s ease;
}

.stat:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.15);
}

.stat-number {
    font-size: 2.8rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    letter-spacing: -1px;
}

.stat-label {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-top: 8px;
    font-weight: 600;
}

.learning-path {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(139, 92, 246, 0.05));
    border-left: 4px solid var(--color-primary);
    padding: 18px 20px;
    border-radius: 8px;
    margin-top: 25px;
    font-size: 1rem;
    color: var(--color-text-light);
    line-height: 1.7;
    font-weight: 500;
}

.learning-path strong {
    color: var(--color-primary);
    font-weight: 700;
}

/* Skills Section */
.skills {
    background: var(--color-section-alt);
    padding: 80px 20px;
}

.skills-categories {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.skill-category {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.skill-category:hover {
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.15);
    transform: translateY(-5px);
}

.skill-category h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--color-primary);
    font-weight: 700;
}

.skills-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.skills-list li {
    padding: 10px 0;
    color: var(--color-text-light);
    font-weight: 500;
    border-bottom: 1px solid #f0f0f0;
}

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

/* Projects Section */
.projects {
    background: white;
    padding: 80px 20px;
}

.project-card {
    background: white;
    border: 2px solid #f0f0f0;
    padding: 40px;
    border-radius: 12px;
    margin-bottom: 30px;
    transition: all 0.3s ease;
}

.project-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.1);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 20px;
    gap: 20px;
}

.project-header h3 {
    font-size: 1.8rem;
    color: var(--color-text);
    margin: 0;
    line-height: 1.3;
}

.status-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    text-transform: uppercase;
}

.status-badge.open-source {
    background: linear-gradient(135deg, #10b981, #059669);
}

.project-description {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: 20px;
    line-height: 1.7;
}

.project-features {
    list-style: none;
    margin-bottom: 25px;
}

.project-features li {
    padding: 10px 0 10px 30px;
    color: var(--color-text-light);
    position: relative;
    line-height: 1.6;
}

.project-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
    font-size: 1.2rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-badge {
    display: inline-block;
    background: var(--color-section-alt);
    color: var(--color-primary);
    padding: 8px 14px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
}

/* Contact Section */
.contact {
    background: linear-gradient(135deg, var(--color-section-accent), var(--color-section-alt));
    padding: 80px 20px;
    text-align: center;
}

.contact-content h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--color-text);
    letter-spacing: -0.5px;
}

.contact-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-light);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.contact-method {
    margin-bottom: 30px;
}

.contact-label {
    font-size: 1.05rem;
    color: var(--color-text-light);
    margin-bottom: 15px;
    font-weight: 600;
}

.email-button {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
    transition: all 0.3s ease;
}

.email-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.contact-links {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 30px;
}

.contact-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    padding: 10px 20px;
    border: 2px solid var(--color-primary);
    border-radius: 6px;
    transition: all 0.3s ease;
}

.contact-link:hover {
    background: var(--color-primary);
    color: white;
}

/* Footer */
footer {
    background: var(--color-section-alt);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
}

footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

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

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.social-link:hover {
    color: var(--color-accent);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content h2 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .project-header {
        flex-direction: column;
    }

    .project-card {
        padding: 25px;
    }

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

    footer .container {
        flex-direction: column;
        text-align: center;
    }

    .contact-links {
        flex-direction: column;
    }

    .contact-link {
        width: 100%;
    }

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

    .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-content h2 {
        font-size: 1.6rem;
    }

    section {
        padding: var(--spacing-xl) 0;
    }

    .project-card {
        padding: 20px;
    }

    .stat {
        padding: 20px;
    }

    .stat-number {
        font-size: 2rem;
    }

    .skill-category {
        padding: 20px;
    }

    .btn {
        padding: 11px 24px;
        font-size: 0.95rem;
    }

    .email-button {
        padding: 12px 24px;
        font-size: 1rem;
    }
}