/* ===== VARIABLES ===== */
:root {
    /* Colors */
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --accent: #10b981;
    --accent-light: #34d399;
    
    /* Neutrals */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    /* Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    
    /* Borders */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Manrope', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* ===== CONTAINER ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

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

.nav-logo {
    font-family: 'Manrope', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

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

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    cursor: pointer;
}

.hamburger span {
    width: 1.5rem;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== HERO SECTION ===== */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1.5fr 0.7fr;
    gap: 4rem;
    align-items: center;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: #dcfce7;
    color: #166534;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn-primary,
.btn-secondary,
.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: var(--bg-secondary);
}

.btn-download {
    background: var(--accent);
    color: white;
    box-shadow: var(--shadow);
}

.btn-download:hover {
    background: #059669;
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: 'Manrope', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.hero-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    aspect-ratio: 1;
}

.image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-wrapper::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, transparent 100%);
}

/* ===== SECTIONS ===== */
section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 3rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 2px;
}

/* ===== EXPERIENCE SECTION ===== */
.experience {
    background: var(--bg-secondary);
}

.timeline {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.experience-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-light);
}

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

.card-header {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.company-logo {
    width: 90px;
    height: 90px;
    object-fit: contain;
    border-radius: var(--radius);
    padding: 0.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.card-title-wrapper {
    flex: 1;
}

.job-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.job-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

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

.separator {
    color: var(--text-muted);
}

.job-type,
.job-location {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.job-period {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.job-responsibilities {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.job-responsibilities li {
    color: var(--text-secondary);
    padding-left: 1.5rem;
    position: relative;
}

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

/* ===== SKILLS SECTION ===== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.skill-category {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: var(--transition);
}

.skill-category:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.category-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

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

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition-fast);
}

.skill-tag:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.skill-tag.highlight {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.skill-note {
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    font-style: italic;
}

.certifications {
    margin-top: 3rem;
}

.subsection-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.cert-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
}

.cert-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
}

.cert-icon {
    font-size: 2rem;
}

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

/* ===== HOMELAB SECTION ===== */
.homelab {
    background: var(--bg-secondary);
}

.homelab-intro {
    background: white;
    border-left: 4px solid var(--primary);
    border-radius: var(--radius);
    padding: 2rem;
    margin-bottom: 3rem;
    box-shadow: var(--shadow);
}

.homelab-intro p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.servers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 2rem;
}

.server-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid var(--border-light);
}

.server-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-8px);
}

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

.server-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.server-card:hover .server-image img {
    transform: scale(1.05);
}

.server-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow);
}

.server-badge.primary {
    background: var(--primary);
    color: white;
}

.server-badge.secondary {
    background: var(--accent);
    color: white;
}

.server-content {
    padding: 2rem;
}

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

.server-specs {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.spec {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.spec-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.spec-value {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.spec-detail {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ===== EDUCATION SECTION ===== */
.education-grid {
    display: grid;
    gap: 1.5rem;
}

.education-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 2rem;
    transition: var(--transition);
}

.education-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.edu-header {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.school-logo {
    width: 70px;
    height: 70px;
    object-fit: contain;
    border-radius: var(--radius);
    padding: 0.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}

.edu-year {
    font-family: 'Manrope', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

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

.edu-subtitle {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.edu-school {
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.edu-badge {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 600;
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

.edu-badge.success {
    background: #dcfce7;
    color: #166534;
}

.edu-badge.ongoing {
    background: #dbeafe;
    color: #1e40af;
}

/* ===== CONTACT SECTION ===== */
.contact {
    background: var(--bg-secondary);
}

.contact-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.contact-intro {
    text-align: center;
    margin-bottom: 3rem;
}

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

.contact-intro p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    gap: 1rem;
    transition: var(--transition);
    overflow: hidden;
}

.contact-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
}

.contact-info {
    flex: 1;
}

.contact-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.contact-value {
    font-weight: 600;
    color: var(--text-primary);
    word-break: break-word;
    overflow-wrap: break-word;
}

.contact-cta {
    text-align: center;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 2rem 0;
}

.footer-content {
    text-align: center;
}

.footer-content p {
    margin-bottom: 0.5rem;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-image {
        order: -1;
        max-width: 350px;
        margin: 0 auto;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .servers-grid {
        grid-template-columns: 1fr;
    }
    
    .education-card {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 65px;
        flex-direction: column;
        background: white;
        width: 100%;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }
    
    .hero {
        padding: 6rem 0 3rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .company-logo {
        width: 80px;
        height: 80px;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .job-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}