/* =========================================
   CSS Variables
   ========================================= */
:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --text-main: #ffffff;
    --text-secondary: #a0a0a0;
    --accent-neon: #00ff88;
    --accent-blue: #0088ff;
    --border-color: #2a2a2a;
    
    --font-main: 'Inter', sans-serif;
    --font-mono: 'Fira Code', monospace;
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

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

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

body {
    background-color: var(--bg-primary);
    color: var(--text-main);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

/* =========================================
   Typography
   ========================================= */
h1, h2, h3, h4 {
    color: var(--text-main);
    font-weight: 800;
    line-height: 1.2;
}

p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
}

/* =========================================
   Neon Utilities
   ========================================= */
.neon-text {
    color: var(--accent-neon);
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.5);
}

.neon-text-glow {
    color: var(--text-main);
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.3), 0 0 20px rgba(0, 255, 136, 0.2);
}

.neon-border-box {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all var(--transition-normal);
}

.neon-border-box:hover {
    border-color: var(--accent-neon);
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.2);
    transform: translateY(-5px);
}

.neon-icon {
    color: var(--accent-neon);
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.4);
}

/* =========================================
   Buttons
   ========================================= */
.neon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background-color: rgba(0, 255, 136, 0.1);
    color: var(--accent-neon);
    border: 1px solid var(--accent-neon);
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-shadow: none;
}

.neon-button:hover {
    background-color: var(--accent-neon);
    color: var(--bg-primary);
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.6);
}

.neon-button.outline {
    background-color: transparent;
    border-color: var(--text-secondary);
    color: var(--text-main);
}

.neon-button.outline:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    background-color: rgba(0, 136, 255, 0.1);
    box-shadow: 0 0 20px rgba(0, 136, 255, 0.4);
}

.neon-button-sm {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.neon-button-sm:hover {
    border-color: var(--accent-neon);
    color: var(--accent-neon);
}

.w-100 {
    width: 100%;
}

/* =========================================
   Navbar
   ========================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 800;
}

.menu-toggle {
    display: block;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.5rem;
    cursor: pointer;
}

.nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--bg-secondary);
    flex-direction: column;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.nav-menu.active {
    display: flex;
}

.nav-links {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.nav-links a {
    font-weight: 600;
    font-size: 1.1rem;
}

.nav-links a:hover {
    color: var(--accent-neon);
}

.nav-actions {
    margin-top: 1.5rem;
    display: flex;
    justify-content: center;
}

/* =========================================
   Hero Section
   ========================================= */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px; /* navbar offset */
    padding-bottom: 4rem;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1.5rem;
    text-align: left;
}

.greeting {
    font-family: var(--font-mono);
    color: var(--accent-neon);
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.name-title {
    font-size: 2.8rem;
    margin-bottom: 1rem;
}

/* Typewriter cursor */
.name-title::after {
    content: '|';
    animation: blink 1s step-end infinite;
}

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

.job-title {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.subtitle {
    font-size: 1.1rem;
    max-width: 600px;
    margin-bottom: 2.5rem;
}

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

.social-links {
    display: flex;
    gap: 1.5rem;
    font-size: 1.5rem;
}

.social-links a:hover {
    color: var(--accent-neon);
    transform: translateY(-3px);
    display: inline-block;
}

/* =========================================
   About Section
   ========================================= */
.about {
    padding: 6rem 0;
    background-color: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 1;
    max-width: 350px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: var(--border-color);
}

.about-text .bio {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.skills h3, .education h3 {
    margin-bottom: 1rem;
    font-family: var(--font-mono);
    color: var(--text-main);
    font-size: 1.2rem;
}

.badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 2rem;
}

.badge {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-family: var(--font-mono);
    transition: all var(--transition-fast);
}

.badge:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    background-color: rgba(0, 136, 255, 0.1);
}

/* =========================================
   Projects Section
   ========================================= */
.projects {
    padding: 6rem 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.project-card {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.card-image {
    height: 200px;
    background-color: #1a1a1a;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.card-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-title {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.card-desc {
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-stack span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-neon);
}

.project-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.project-meta .status {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.status.deployed { color: var(--accent-neon); }
.status.complete { color: var(--accent-blue); }
.status.upcoming { color: var(--text-secondary); }

.card-actions {
    display: flex;
    gap: 1rem;
}

.card-btn {
    flex: 1;
    text-align: center;
    padding: 0.6rem;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 600;
}

.card-btn.primary {
    background-color: var(--accent-neon);
    color: var(--bg-primary);
}

.card-btn.primary:hover {
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.4);
}

.card-btn.secondary {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.card-btn.secondary:hover {
    border-color: var(--text-main);
}

/* =========================================
   Contact Section
   ========================================= */
.contact {
    padding: 6rem 0;
    background-color: var(--bg-secondary);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

.contact-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-details li {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.1rem;
}

.contact-details a:hover {
    color: var(--accent-neon);
}

.contact-form-container {
    padding: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-main);
}

.form-control {
    width: 100%;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.8rem;
    border-radius: 4px;
    font-family: var(--font-main);
    transition: border-color var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-neon);
}

textarea.form-control {
    resize: vertical;
}

.form-status {
    margin-top: 1rem;
    font-size: 0.9rem;
    text-align: center;
}
.form-status.success { color: var(--accent-neon); }
.form-status.error { color: #ff3366; }

/* =========================================
   Footer
   ========================================= */
.footer {
    padding: 2rem 0;
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.footer-links a:hover {
    color: var(--accent-neon);
}

/* =========================================
   Animations (Intersection Observer)
   ========================================= */
.fade-in-section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-section.is-visible {
    opacity: 1;
    transform: none;
}

/* =========================================
   Modal (CV)
   ========================================= */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-secondary);
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    margin: 0;
    font-size: 1.3rem;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
    transition: color var(--transition-fast);
}

.close-btn:hover {
    color: #ff3366;
}

.modal-body {
    padding: 0;
    background-color: #ffffff; /* White background for the PDF iframe */
    flex: 1;
    overflow-y: auto;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
}

/* =========================================
   Media Queries (Desktop First / Mobile First mapping)
   ========================================= */

/* Tablet (481px - 768px) */
@media (min-width: 768px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-cta, .social-links {
        justify-content: center;
    }
}

/* Desktop (769px - 1200px) */
@media (min-width: 992px) {
    .menu-toggle {
        display: none;
    }
    
    .nav-menu {
        display: flex;
        position: static;
        flex-direction: row;
        width: auto;
        padding: 0;
        border: none;
        background: transparent;
        align-items: center;
        gap: 2rem;
    }
    
    .nav-links {
        flex-direction: row;
        gap: 2rem;
    }
    
    .nav-actions {
        margin-top: 0;
    }
    
    .name-title {
        font-size: 4rem;
    }
    
    .about-grid, .contact-wrapper {
        grid-template-columns: 1fr 2fr;
        align-items: center;
    }
    
    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
    }
}