/* Professional Portfolio Design System */
:root {
    /* Colors */
    --primary: hsl(182, 100%, 25%);
    --primary-light: hsl(182, 100%, 35%);
    --charcoal: hsl(0, 0%, 20%);
    --accent: hsl(358, 78%, 60%);
    --background: hsl(0, 0%, 100%);
    --card: hsl(0, 0%, 100%);
    --muted: hsl(0, 0%, 45%);
    --border: hsl(0, 0%, 90%);
    
    /* Shadows */
    --shadow-soft: 0 4px 20px -2px hsla(0, 0%, 20%, 0.1);
    --shadow-card: 0 8px 30px -4px hsla(0, 0%, 20%, 0.15);
    
    /* Transitions */
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Fonts */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--charcoal);
    background-color: var(--background);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: var(--transition-smooth);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-brand a {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: 0.5px;
}

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

.nav-link {
    font-family: var(--font-body);
    font-weight: 500;
    color: var(--charcoal);
    text-decoration: none;
    transition: var(--transition-smooth);
    position: relative;
}

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

.nav-link:after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    transition: var(--transition-smooth);
}

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

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary);
    margin: 3px 0;
    transition: var(--transition-smooth);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--background);
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.05;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, hsla(182, 100%, 25%, 0.05), hsla(182, 100%, 35%, 0.1));
}

.teal-sidebar {
    position: absolute;
    left: 0;
    top: 0;
    width: 8px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary), var(--primary-light));
    z-index: 10;
}

.hero-content {
    position: relative;
    z-index: 20;
    text-align: center;
    padding: 1.5rem;
    max-width: 64rem;
    margin: 0 auto;
}

.portfolio-title {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: clamp(3rem, 8vw, 8rem);
    color: var(--charcoal);
    margin-bottom: 1.5rem;
    letter-spacing: -2px;
}

.developer-name {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: clamp(2rem, 6vw, 6rem);
    color: var(--charcoal);
    margin-bottom: 2rem;
    letter-spacing: 2px;
}

.tagline-container {
    margin-bottom: 3rem;
}

.tagline {
    font-family: var(--font-body);
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.hero-divider {
    width: 8rem;
    height: 4px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    margin: 0 auto;
    border-radius: 2px;
    box-shadow: var(--shadow-soft);
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: clamp(2.5rem, 5vw, 4rem);
    color: var(--charcoal);
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.section-divider {
    width: 6rem;
    height: 4px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    margin: 0 auto 1.5rem;
    border-radius: 2px;
}

.section-description {
    font-family: var(--font-body);
    font-size: 1.125rem;
    color: var(--muted);
    max-width: 32rem;
    margin: 0 auto;
    line-height: 1.75;
}

/* Skills Section */
.skills {
    padding: 5rem 1.5rem;
    background: var(--background);
}

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

.skill-card {
    background: var(--card);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border);
    transition: var(--transition-smooth);
}

.skill-card:hover {
    box-shadow: var(--shadow-soft);
    border-color: hsla(182, 100%, 25%, 0.2);
}

.skill-header {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.skill-icon {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-right: 1rem;
}

.skill-icon .icon {
    width: 1.5rem;
    height: 1.5rem;
}

.skill-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary);
}

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

.skill-badge {
    font-family: var(--font-body);
    font-size: 0.875rem;
    background: hsla(0, 0%, 96%, 1);
    color: var(--charcoal);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 1px solid var(--border);
    transition: var(--transition-smooth);
}

.skill-badge:hover {
    background: hsla(182, 100%, 25%, 0.1);
}

/* Projects Section */
.projects {
    padding: 5rem 1.5rem;
    background: hsla(0, 0%, 96%, 0.3);
}

.projects-title .accent-text {
    color: var(--accent);
}

.accent-divider {
    background: linear-gradient(135deg, var(--accent), hsl(358, 78%, 70%));
}

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

.project-card {
    background: var(--card);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border);
    transition: var(--transition-smooth);
}

.project-card:hover {
    box-shadow: var(--shadow-soft);
    border-color: hsla(358, 78%, 60%, 0.2);
}

.project-header {
    margin-bottom: 1.5rem;
}

.project-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--charcoal);
    margin-bottom: 0.5rem;
}

.project-company {
    font-family: var(--font-body);
    font-size: 1.125rem;
    color: var(--muted);
    margin-bottom: 1rem;
}

.project-link {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-body);
    font-weight: 500;
    color: var(--accent);
    text-decoration: none;
    border: 1px solid var(--accent);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: var(--transition-smooth);
}

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

.external-icon {
    width: 1rem;
    height: 1rem;
    margin-left: 0.5rem;
}

.project-features {
    list-style: none;
}

.project-features li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    font-family: var(--font-body);
    line-height: 1.75;
}

.project-features li:before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.75rem;
    width: 0.5rem;
    height: 0.5rem;
    background: var(--accent);
    border-radius: 50%;
}

/* Read More Functionality */
.project-features .truncated {
    display: inline;
}

.project-features .full-text {
    display: none;
}

.project-features .read-more-link {
    color: var(--primary);
    cursor: pointer;
    font-weight: 600;
    text-decoration: underline;
    margin-left: 0.25rem;
    transition: var(--transition-smooth);
}

.project-features .read-more-link:hover {
    color: var(--primary-light);
}

/* Contact Section */
.contact {
    padding: 5rem 1.5rem;
    background: var(--background);
}

.contact .section-title .primary-text {
    color: var(--primary);
}

.primary-divider {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.contact-card {
    background: var(--card);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border);
    transition: var(--transition-smooth);
}

.contact-card:hover {
    border-color: hsla(182, 100%, 25%, 0.2);
}

.contact-icon {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin: 0 auto 1rem;
}

.contact-icon .icon {
    width: 1.5rem;
    height: 1.5rem;
}

.contact-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.contact-info {
    font-family: var(--font-body);
    color: var(--charcoal);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.social-link {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-body);
    font-weight: 500;
    color: var(--primary);
    text-decoration: none;
    border: 1px solid var(--primary);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    transition: var(--transition-smooth);
}

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

.social-icon {
    width: 1.25rem;
    height: 1.25rem;
    margin-right: 0.5rem;
}

.cta-button {
    display: block;
    margin: 0 auto;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1.125rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-bounce);
}

.cta-button:hover {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    box-shadow: var(--shadow-card);
    transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 2rem;
        transition: var(--transition-smooth);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }

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

    .social-links {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding-top: 70px;
    }
    
    .container {
        padding: 0 1rem;
    }

    .skills, .projects, .contact {
        padding: 3rem 1rem;
    }

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

    .contact-grid {
        grid-template-columns: 1fr;
    }
}