/* 
   Nexus.Craft — Professional Portfolio Stylesheet
   Theme: Modern Dark Mode (Elegant, Tech-vibes)
*/

/* --- Variables & Configuration --- */
:root {
    /* Color Palette */
    --bg-main: #0a0a0c;
    --bg-card: #141417;
    --bg-nav: rgba(10, 10, 12, 0.85);
    --bg-accent-soft: rgba(0, 122, 255, 0.1);
    
    --text-primary: #f8f9fa;
    --text-secondary: #a0a0ab;
    --text-dim: #71717a;
    
    --accent: #007aff;
    --accent-glow: rgba(0, 122, 255, 0.5);
    --accent-gradient: linear-gradient(135deg, #007aff 0%, #00c6ff 100%);
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    
    /* Layout */
    --container-max: 1280px;
    --section-padding: 100px 0;
    --nav-height: 80px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: 'Plus Jakarta Sans', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

ul { list-style: none; }
a { text-decoration: none; color: inherit; transition: var(--transition-fast); }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* --- Global Utilities --- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.section-header {
    margin-bottom: 60px;
    text-align: center;
}

.section-subtitle {
    display: block;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--accent);
    margin-bottom: 12px;
    text-transform: uppercase;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.2;
}

.section-description {
    max-width: 600px;
    margin: 20px auto 0;
    color: var(--text-secondary);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    gap: 10px;
    transition: var(--transition-base);
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 10px 20px -5px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px -5px var(--accent-glow);
}

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

.btn-secondary:hover {
    background: var(--border-color);
    border-color: var(--text-dim);
}

.btn-block {
    width: 100%;
}

.icon-arrow, .icon-send {
    width: 18px;
    height: 18px;
}

/* --- Background Decor --- */
.bg-grid-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(var(--border-color) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: -2;
    opacity: 0.4;
}

.bg-glow-orb {
    position: fixed;
    width: 400px;
    height: 400px;
    border-radius: var(--radius-full);
    filter: blur(120px);
    z-index: -1;
    opacity: 0.15;
}

.orb-1 {
    background: var(--accent);
    top: -100px;
    right: -100px;
}

.orb-2 {
    background: #7000ff;
    bottom: -100px;
    left: -100px;
}

/* --- Navigation --- */
.navbar-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: var(--bg-nav);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    align-items: center;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.logo-highlight {
    color: var(--accent);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
}

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

.btn-nav-cta {
    background: var(--accent-gradient);
    padding: 8px 20px !important;
    border-radius: var(--radius-sm);
    color: white !important;
    font-weight: 600;
}

.hamburger-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
}

.hamburger-btn .bar {
    width: 28px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-base);
}

/* --- Hero Section --- */
.hero-section {
    padding: calc(var(--nav-height) + 60px) 0 80px;
    position: relative;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    align-items: center;
    gap: 60px;
}

.badge-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-card);
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    position: relative;
}

.pulse-dot::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #10b981;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.8; }
    100% { transform: scale(3); opacity: 0; }
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.04em;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 550px;
}

.hero-actions {
    display: flex;
    gap: 20px;
    margin-bottom: 60px;
}

.hero-stats-mini {
    display: flex;
    align-items: center;
    gap: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-primary);
}

.stat-plus {
    color: var(--accent);
    margin-left: 2px;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-dim);
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

/* Code Card Visual */
.code-card-wrapper {
    background: #0d0d0f;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: 0 30px 60px -15px rgba(0,0,0,0.5);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: var(--transition-slow);
}

.code-card-wrapper:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.code-card-header {
    background: #1a1a1e;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
}

.window-dots {
    display: flex;
    gap: 8px;
}

.dot { width: 10px; height: 10px; border-radius: 50%; }
.red { background: #ff5f56; }
.yellow { background: #ffbd2e; }
.green { background: #27c93f; }

.code-filename {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--text-dim);
}

.code-card-body {
    padding: 24px;
}

.code-card-body pre {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: #e2e2e3;
    line-height: 1.7;
}

.json-key { color: #7dd3fc; }
.json-string { color: #f472b6; }

.interactive-tag {
    padding: 10px 20px;
    background: var(--bg-accent-soft);
    text-align: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* --- About Section --- */
.about-section {
    padding: var(--section-padding);
    background: linear-gradient(180deg, var(--bg-main) 0%, #0e0e11 100%);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: var(--radius-lg);
}

.main-bio h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.main-bio p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.signature-block {
    margin-top: 40px;
    border-left: 3px solid var(--accent);
    padding-left: 20px;
}

.sig-title {
    display: block;
    font-size: 0.8rem;
    color: var(--text-dim);
    text-transform: uppercase;
    margin-bottom: 4px;
}

.sig-name {
    font-weight: 800;
    font-size: 1.1rem;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
    justify-content: center;
}

.feature-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.feature-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.feature-item h4 {
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.feature-item p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* --- Skills Section --- */
.skills-section {
    padding: var(--section-padding);
}

.skills-categories {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.skill-group {
    background: var(--bg-card);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.skill-group-title {
    font-size: 1.4rem;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.skills-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.skill-badge {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.skill-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: #1a1a20;
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
}

/* --- Projects Section --- */
.projects-section {
    padding: var(--section-padding);
}

.filter-controls {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 600;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-secondary);
    transition: var(--transition-base);
}

.filter-btn:hover, .filter-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 30px;
}

.project-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: var(--transition-base);
    opacity: 1;
    transform: scale(1);
}

.project-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent);
    box-shadow: 0 20px 40px -10px rgba(0,0,0,0.4);
}

.project-media {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.project-img-placeholder {
    width: 100%;
    height: 100%;
    background: #1a1a1e;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.project-img-placeholder::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 60px;
    background: var(--bg-accent-soft);
    border-radius: 50%;
    opacity: 0.5;
}

/* Custom Gradients for placeholders */
.web-project-1 { background: linear-gradient(45deg, #0f172a, #1e293b); }
.design-project-1 { background: linear-gradient(45deg, #1e1b4b, #312e81); }
.script-project-1 { background: linear-gradient(45deg, #164e63, #0891b2); }
.web-project-2 { background: linear-gradient(45deg, #312e81, #4338ca); }
.design-project-2 { background: linear-gradient(45deg, #581c87, #7e22ce); }
.script-project-2 { background: linear-gradient(45deg, #14532d, #16a34a); }

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 12, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-base);
    backdrop-filter: blur(4px);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.btn-view-detail {
    background: white;
    color: black;
    padding: 12px 24px;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 0.9rem;
    transform: translateY(20px);
    transition: var(--transition-base);
}

.project-card:hover .btn-view-detail {
    transform: translateY(0);
}

.project-content {
    padding: 30px;
}

.project-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.tag {
    font-size: 0.7rem;
    font-weight: 700;
    padding: 4px 10px;
    background: #1e1e24;
    color: var(--accent);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.project-title {
    font-size: 1.4rem;
    margin-bottom: 12px;
}

.project-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* --- Timeline Section --- */
.timeline-section {
    padding: var(--section-padding);
    background: #0d0d0f;
}

.timeline-wrapper {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 40px;
}

.timeline-wrapper::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 2px;
    height: 100%;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 60px;
}

.timeline-item:last-child { margin-bottom: 0; }

.timeline-dot {
    position: absolute;
    left: -46px;
    top: 8px;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    border: 3px solid var(--bg-main);
    box-shadow: 0 0 15px var(--accent-glow);
}

.timeline-date {
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--accent);
    margin-bottom: 8px;
}

.timeline-content h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.timeline-content p {
    color: var(--text-secondary);
}

/* --- Contact Section --- */
.contact-section {
    padding: var(--section-padding);
}

.contact-card-box {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: 0 40px 80px -20px rgba(0,0,0,0.5);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
}

.contact-info {
    padding: 60px;
    background: linear-gradient(135deg, #1a1a20 0%, #141417 100%);
    border-right: 1px solid var(--border-color);
}

.contact-info .section-title {
    font-size: 2rem;
    margin-bottom: 20px;
    text-align: left;
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.c-method {
    display: flex;
    gap: 20px;
    align-items: center;
}

.c-icon {
    font-size: 1.5rem;
    width: 50px;
    height: 50px;
    background: var(--bg-accent-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
}

.c-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-dim);
    text-transform: uppercase;
    font-weight: 700;
}

.c-val {
    font-weight: 600;
}

.contact-form {
    padding: 60px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: #0a0a0c;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    transition: var(--transition-base);
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--bg-accent-soft);
}

.form-response-msg {
    margin-top: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 12px;
    border-radius: var(--radius-sm);
    display: none;
}

.form-success { background: rgba(16, 185, 129, 0.1); color: #10b981; }
.form-error { background: rgba(239, 68, 68, 0.1); color: #ef4444; }

/* --- Footer --- */
.footer {
    padding: 60px 0;
    border-top: 1px solid var(--border-color);
    background: var(--bg-main);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;
}

.footer-copy {
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-top: 10px;
}

.footer-socials {
    display: flex;
    gap: 20px;
}

.social-link {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.social-link svg { width: 20px; height: 20px; }

.social-link:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    transform: translateY(-5px);
}

/* --- Modal --- */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(10px);
    z-index: 2000;
    display: none; /* Controlled by JS */
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-container {
    background: var(--bg-card);
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    position: relative;
    overflow-y: auto;
}

.modal-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 2rem;
    color: var(--text-dim);
    z-index: 10;
}

.modal-body {
    padding: 40px;
}

/* --- Responsive Adjustments --- */
@media (max-width: 1024px) {
    .hero-title { font-size: 3rem; }
    .hero-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; }
    .hero-visual { display: none; }
    .contact-info { border-right: none; border-bottom: 1px solid var(--border-color); }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
    }
    
    .hamburger-btn { display: flex; }
    
    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        background: var(--bg-nav);
        backdrop-filter: blur(20px);
        height: 0;
        overflow: hidden;
        transition: var(--transition-base);
        border-bottom: 0 solid var(--border-color);
    }
    
    .nav-menu.active {
        height: calc(100vh - var(--nav-height));
        padding: 40px 24px;
        border-bottom-width: 1px;
    }
    
    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 24px;
    }
    
    .nav-link { font-size: 1.2rem; width: 100%; }
    
    .hero-title { font-size: 2.5rem; }
    .hero-actions { flex-direction: column; }
    
    .skills-categories { grid-template-columns: 1fr; }
    
    .footer-content { flex-direction: column; text-align: center; }
}