/* ===================================
   CSS Reset & Base Styles
   =================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: #2c3e50;
    line-height: 1.6;
    background-color: #ffffff;
}

/* ===================================
   Typography
   =================================== */

h1, h2, h3 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    line-height: 1.2;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    color: #2c3e50;
}

/* ===================================
   Container & Layout
   =================================== */

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

section {
    padding: 5rem 0;
}

/* ===================================
   Navigation Bar
   =================================== */

.navbar {
    position: sticky;
    top: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all 0.3s ease;
}

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

.nav-logo {
    font-family: 'Poppins', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: #0a7e8c;
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-logo:hover {
    color: #0d9fb5;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: #2c3e50;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #0a7e8c;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #0a7e8c;
    transition: width 0.3s ease;
}

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

/* ===================================
   Hero Section
   =================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    position: relative;
}

.hero-content {
    padding: 2rem;
}

.hero-title {
    font-size: 5rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease;
}

.hero-tagline {
    font-size: 1.5rem;
    color: #7f8c8d;
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.scroll-indicator {
    display: inline-block;
    font-size: 2rem;
    color: #0a7e8c;
    text-decoration: none;
    animation: bounce 2s infinite;
    transition: color 0.3s ease;
}

.scroll-indicator:hover {
    color: #0d9fb5;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* ===================================
   About Section
   =================================== */

.about {
    background-color: #ffffff;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text p {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: #2c3e50;
}

.about-text p:last-child {
    margin-bottom: 0;
}

/* ===================================
   Skills Section
   =================================== */

.skills {
    background-color: #f8f9fa;
}

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

.skill-card {
    background-color: #ffffff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.skill-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(10, 126, 140, 0.15);
    border-color: #0a7e8c;
}

.skill-card h3 {
    font-size: 1.5rem;
    color: #0a7e8c;
    margin-bottom: 0.75rem;
}

.skill-card p {
    color: #7f8c8d;
    font-size: 1rem;
}

/* ===================================
   Projects Section
   =================================== */

.projects {
    background-color: #ffffff;
}

.projects-list {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    margin-top: 2rem;
}

.project-card {
    background-color: #f8f9fa;
    border-radius: 12px;
    padding: 2.5rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: #0a7e8c;
}

.project-title {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.project-description {
    font-size: 1.125rem;
    color: #7f8c8d;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.tech-tag {
    background-color: #e8f4f5;
    color: #0a7e8c;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.tech-tag:hover {
    background-color: #0a7e8c;
    color: #ffffff;
}

.project-link {
    display: inline-block;
    color: #0a7e8c;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.125rem;
    transition: all 0.3s ease;
    position: relative;
}

.project-link:hover {
    color: #0d9fb5;
    transform: translateX(5px);
}

/* ===================================
   Contact Section
   =================================== */

.contact {
    background-color: #f8f9fa;
    text-align: center;
}

.contact-text {
    font-size: 1.25rem;
    color: #7f8c8d;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background-color: #ffffff;
    color: #2c3e50;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.contact-link:hover {
    background-color: #0a7e8c;
    color: #ffffff;
    transform: translateY(-3px);
    box-shadow: 0 8px 16px rgba(10, 126, 140, 0.2);
}

.contact-link svg {
    transition: transform 0.3s ease;
}

.contact-link:hover svg {
    transform: scale(1.1);
}

/* ===================================
   Footer
   =================================== */

.footer {
    background-color: #2c3e50;
    color: #ffffff;
    text-align: center;
    padding: 2rem;
}

.footer p {
    font-size: 0.875rem;
    color: #ecf0f1;
}

/* ===================================
   Responsive Design
   =================================== */

/* Tablet */
@media (max-width: 1024px) {
    .section-title {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 4rem;
    }

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

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

/* Mobile */
@media (max-width: 768px) {
    .nav-container {
        padding: 1rem;
    }

    .nav-menu {
        gap: 1rem;
    }

    .nav-link {
        font-size: 0.875rem;
    }

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

    .hero-tagline {
        font-size: 1.125rem;
    }

    .section-title {
        font-size: 1.75rem;
        margin-bottom: 2rem;
    }

    section {
        padding: 3rem 0;
    }

    .container {
        padding: 0 1rem;
    }

    .about-text p {
        font-size: 1rem;
    }

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

    .skill-card {
        padding: 1.5rem;
    }

    .project-card {
        padding: 1.5rem;
    }

    .project-title {
        font-size: 1.5rem;
    }

    .project-description {
        font-size: 1rem;
    }

    .contact-links {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .contact-link {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-tagline {
        font-size: 1rem;
    }

    .nav-logo {
        font-size: 1.25rem;
    }

    .nav-menu {
        gap: 0.75rem;
    }

    .nav-link {
        font-size: 0.75rem;
    }
}