/* Simple Portfolio - Clean & Compact Design */
:root {
    --black: #000000;
    --white: #ffffff;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--white);
    color: var(--black);
    line-height: 1.6;
}

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

/* Navigation - Compact */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    padding: 8px 0;
}

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

.nav-logo {
    font-weight: 600;
    font-size: 18px;
    color: var(--black);
}

.nav-menu {
    display: flex;
    gap: 25px;
    align-items: center;
}

.nav-link {
    color: var(--gray-600);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 4px;
    transition: all 0.3s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--black);
    background: var(--gray-100);
}

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

.hamburger .bar {
    width: 24px;
    height: 2px;
    background: var(--black);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section - Clean Left-Aligned */
.hero {
    padding: 90px 0 50px;
    border-bottom: 1px solid var(--gray-200);
}

.hero-content {
    max-width: 100%;
}

.hero-text {
    max-width: 600px;
}

.hero-greeting {
    margin-bottom: 10px;
}

.greeting-text {
    color: var(--gray-600);
    font-size: 16px;
    font-weight: 500;
}

.hero-name {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--black);
    line-height: 1.1;
}

.hero-title {
    font-size: 22px;
    color: var(--gray-600);
    margin-bottom: 15px;
    font-weight: 500;
}

.hero-description {
    font-size: 16px;
    color: var(--gray-500);
    margin-bottom: 25px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 12px;
    align-items: center;
}

.hero-buttons .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.hero-buttons .btn i {
    font-size: 14px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    text-decoration: none;
    font-weight: 500;
    border-radius: 4px;
    transition: all 0.3s;
    border: 1px solid transparent;
    font-size: 14px;
}

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

.btn-primary:hover {
    background: var(--gray-800);
}

.btn-secondary {
    background: var(--white);
    color: var(--black);
    border-color: var(--gray-300);
}

.btn-secondary:hover {
    background: var(--gray-100);
}

.btn-small {
    padding: 6px 12px;
    font-size: 12px;
}

/* Skills Section - Tabbed with Horizontal Lists */
.skills {
    padding: 40px 0;
    border-bottom: 1px solid var(--gray-200);
}

.skills h2 {
    text-align: center;
    font-size: 28px;
    margin-bottom: 30px;
    color: var(--black);
}

.skills-tabs {
    max-width: 700px;
    margin: 0 auto;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    margin-bottom: 25px;
    background: var(--gray-100);
    border-radius: 6px;
    padding: 4px;
}

.tab-btn {
    background: none;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-600);
    border-radius: 4px;
    transition: all 0.3s;
    flex: 1;
}

.tab-btn.active,
.tab-btn:hover {
    color: var(--black);
    background: var(--white);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.tab-content {
    min-height: 120px;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* Skills as Button-like Tags */
.skills-list-horizontal {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.skills-list-horizontal li {
    background: var(--white);
    color: var(--black);
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 13px;
    font-weight: 500;
    border: 1px solid var(--gray-300);
    transition: all 0.3s;
}

.skills-list-horizontal li:hover {
    background: var(--gray-100);
}

.skills-list-horizontal li::before {
    display: none;
}

/* Projects Section - Enhanced Cards */
.projects {
    padding: 40px 0;
    border-bottom: 1px solid var(--gray-200);
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-title {
    font-size: 28px;
    color: var(--black);
    margin-bottom: 8px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
    max-width: 1100px;
    margin: 0 auto;
}

.project-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 25px rgba(0,0,0,0.15);
    border-color: var(--gray-400);
}

.project-image {
    width: 100%;
    height: 200px;
    background: var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    font-size: 14px;
    overflow: hidden;
    position: relative;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    transition: transform 0.3s ease;
}

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

.project-info {
    padding: 20px;
}

.project-title {
    font-size: 18px;
    color: var(--black);
    margin-bottom: 8px;
    font-weight: 600;
    line-height: 1.3;
}

.project-description {
    color: var(--gray-600);
    margin-bottom: 15px;
    font-size: 14px;
    line-height: 1.5;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 18px;
}

.tech-tag {
    background: var(--gray-100);
    color: var(--gray-700);
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 500;
    border: 1px solid var(--gray-200);
}

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

.project-links .btn-small {
    flex: 1;
    text-align: center;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 500;
    border-radius: 4px;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    background: var(--black);
    color: var(--white);
    border: 1px solid var(--black);
}

.project-links .btn-small:hover {
    background: var(--gray-800);
    border-color: var(--gray-800);
    transform: translateY(-1px);
}

/* Contact Section - Card Design */
.contact {
    padding: 40px 0;
    text-align: center;
}

.contact h2 {
    font-size: 28px;
    margin-bottom: 8px;
    color: var(--black);
}

.contact .section-header p {
    color: var(--gray-600);
    margin-bottom: 40px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto 40px;
}

.contact-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 30px 24px;
    text-align: center;
    transition: all 0.3s;
}

.contact-card:hover {
    border-color: var(--black);
    transform: translateY(-2px);
}

.contact-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: 50%;
    transition: all 0.3s;
}

.contact-card:hover .contact-icon {
    background: var(--black);
    color: var(--white);
}

.contact-icon i {
    font-size: 20px;
    color: var(--gray-600);
    transition: all 0.3s;
}

.contact-card:hover .contact-icon i {
    color: var(--white);
}

.contact-card h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--black);
    font-weight: 600;
}

.contact-card p {
    color: var(--gray-600);
    margin-bottom: 16px;
    font-size: 14px;
}

.contact-link {
    color: var(--black);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    padding: 8px 0;
    display: inline-block;
    border-bottom: 1px solid transparent;
    transition: all 0.3s;
}

.contact-link:hover {
    border-bottom-color: var(--black);
}

.contact-cta {
    max-width: 600px;
    margin: 0 auto;
    padding: 40px 0 20px;
    text-align: center;
}

.contact-cta h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--black);
    font-weight: 600;
}

.contact-cta p {
    color: var(--gray-600);
    margin-bottom: 30px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-buttons .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    font-size: 14px;
    transition: all 0.3s;
}

.btn-primary {
    background: var(--black);
    color: var(--white);
    border: 1px solid var(--black);
}

.btn-primary:hover {
    background: var(--gray-800);
    border-color: var(--gray-800);
}

.btn-secondary {
    background: var(--white);
    color: var(--black);
    border: 1px solid var(--gray-300);
}

.btn-secondary:hover {
    background: var(--gray-100);
    border-color: var(--black);
}

/* Footer */
.footer {
    background: var(--gray-100);
    border-top: 1px solid var(--gray-200);
    padding: 20px 0;
    text-align: center;
}

.footer p {
    color: var(--gray-600);
    font-size: 14px;
    margin: 0;
}

/* Mobile Responsive */
@media (max-width: 1024px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 50px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        padding: 15px 0;
        border-bottom: 1px solid var(--gray-200);
        gap: 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        display: block;
        padding: 12px 20px;
        border-radius: 0;
        border-bottom: 1px solid var(--gray-100);
    }
    
    .hero {
        padding: 80px 0 40px;
    }
    
    .hero-name {
        font-size: 32px;
    }
    
    .hero-title {
        font-size: 18px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 8px;
    }
    
    .btn {
        width: 200px;
    }
    
    .tab-buttons {
        flex-direction: column;
        padding: 0;
        background: none;
        gap: 0;
    }
    
    .tab-btn {
        border-bottom: 1px solid var(--gray-200);
        border-radius: 0;
        background: var(--gray-100);
    }
    
    .tab-btn.active {
        background: var(--white);
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .contact-cta {
        padding: 30px 0 20px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-buttons .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 28px;
    }
    
    .skills h2,
    .section-title,
    .contact h2 {
        font-size: 24px;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
}