/* ============================================
   Global Styles & Variables
   ============================================ */

:root {
    --primary-color: #1a1a2e;
    --secondary-color: #0f3460;
    --accent-color: #e94560;
    --text-color: #ecf0f1;
    --light-text: #bdc3c7;
    --success-color: #27ae60;
    --border-color: #34495e;
    
    --transition: all 0.3s ease;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--primary-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

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

.navbar {
    background-color: rgba(15, 52, 96, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

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

.logo h1 {
    font-size: 1.8rem;
    color: var(--accent-color);
    font-weight: bold;
}

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

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: var(--transition);
}

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

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

.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(233, 69, 96, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(15, 52, 96, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.8s ease;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
    font-weight: bold;
}

.hero p {
    font-size: 1.5rem;
    color: var(--light-text);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: var(--transition);
    text-align: center;
}

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

.btn-primary:hover {
    background-color: #d63a4f;
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

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

.btn-secondary:hover {
    background-color: var(--accent-color);
    color: white;
    transform: translateY(-3px);
}

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

.about {
    background-color: rgba(15, 52, 96, 0.5);
    padding: 4rem 0;
}

.about h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--accent-color);
}

.about-content {
    background-color: rgba(26, 26, 46, 0.8);
    padding: 2rem;
    border-radius: 10px;
    border-left: 4px solid var(--accent-color);
}

.about-content p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--light-text);
}

.about-list {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.about-list li {
    padding: 0.5rem;
    color: var(--text-color);
    font-size: 1rem;
}

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

.skills {
    background-color: var(--primary-color);
    padding: 4rem 0;
}

.skills h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--accent-color);
}

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

.skill-category {
    background-color: rgba(15, 52, 96, 0.6);
    padding: 2rem;
    border-radius: 10px;
    border-top: 3px solid var(--accent-color);
    transition: var(--transition);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    background-color: rgba(15, 52, 96, 0.8);
}

.skill-category h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.skill-category ul {
    list-style: none;
}

.skill-category li {
    padding: 0.5rem 0;
    color: var(--light-text);
    position: relative;
    padding-left: 1.5rem;
}

.skill-category li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

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

.projects {
    background-color: rgba(15, 52, 96, 0.3);
    padding: 4rem 0;
}

.projects h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--accent-color);
}

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

.project-card {
    background-color: rgba(26, 26, 46, 0.9);
    padding: 2rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.project-header {
    margin-bottom: 1rem;
}

.project-card h3 {
    color: var(--accent-color);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.project-tag {
    display: inline-block;
    background-color: rgba(233, 69, 96, 0.2);
    color: var(--accent-color);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.project-card p {
    color: var(--light-text);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

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

.project-links a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border: 1px solid var(--accent-color);
    border-radius: 5px;
    transition: var(--transition);
}

.project-links a:hover {
    background-color: var(--accent-color);
    color: white;
}

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

.contact {
    background-color: var(--primary-color);
    padding: 4rem 0;
    text-align: center;
}

.contact h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.contact p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--light-text);
}

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

.contact-link {
    text-decoration: none;
    color: var(--text-color);
    font-size: 1rem;
    padding: 0.8rem 1.5rem;
    border: 2px solid var(--accent-color);
    border-radius: 5px;
    transition: var(--transition);
    font-weight: 600;
}

.contact-link:hover {
    background-color: var(--accent-color);
    color: white;
    transform: scale(1.05);
}

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

.footer {
    background-color: rgba(15, 52, 96, 0.8);
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.footer p {
    color: var(--light-text);
    margin: 0.5rem 0;
}

/* ============================================
   Animations
   ============================================ */

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

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

@media (max-width: 768px) {
    .nav-menu {
        gap: 1rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

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

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

    .btn {
        width: 100%;
        max-width: 300px;
    }

    .about-list {
        grid-template-columns: 1fr;
    }

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

    section h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .nav-menu {
        gap: 0.5rem;
        font-size: 0.9rem;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

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

    .nav-menu a {
        padding: 0.5rem;
    }
}