/* CSS Architecture - Modern Fluid Design System */
:root {
    --bg-main: #0a0a0c;
    --bg-surface: #121216;
    --bg-card: #181822;
    --accent: #2563eb;
    --accent-glow: rgba(37, 99, 235, 0.15);
    --accent-light: #60a5fa;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-dark: #64748b;
    --border: #22222f;
    --transition-smooth: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    --font-stack: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
    user-select: none;
}

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

/* Scrollbar Engineering */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* Background Atmospheric Blur Blobs */
.bg-glow {
    position: fixed;
    width: 40vw;
    height: 40vw;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    filter: blur(80px);
    z-index: -1;
    pointer-events: none;
    animation: pulseGlow 12s infinite alternate ease-in-out;
}
.blob-1 { top: -10%; left: -10%; }
.blob-2 { bottom: -10%; right: -10%; animation-delay: 4s; }

@keyframes pulseGlow {
    0% { transform: scale(1) translate(0, 0); opacity: 0.6; }
    100% { transform: scale(1.15) translate(4%, 4%); opacity: 0.9; }
}

/* Utility Containers */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}
.section-padding {
    padding: 8rem 0;
}

/* Navigation System */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 10, 12, 0.7);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition-smooth);
}
.navbar.scrolled {
    background: rgba(10, 10, 12, 0.9);
    border-color: var(--border);
    padding: 0.2rem 0;
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.2rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -1px;
}
.logo span { color: var(--accent-light); }

.nav-menu {
    display: flex;
    gap: 2.5rem;
}
.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    transition: var(--transition-smooth);
}
.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-light);
    transition: var(--transition-smooth);
}
.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}
.menu-toggle .bar {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-smooth);
}

/* Hero Section Engineering */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 0 2rem;
    max-width: 1200px;
    margin: 0 auto;
}
.hero-content {
    max-width: 750px;
}
.hero-subtitle {
    font-size: 1rem;
    color: var(--accent-light);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 1.5rem;
    font-weight: 600;
}
.hero-title {
    font-size: clamp(3rem, 7vw, 5rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -2px;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-dynamic {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-secondary);
}
.typing-text {
    color: var(--text-primary);
    border-right: 2px solid var(--accent-light);
    padding-right: 4px;
    animation: blink 0.75s step-end infinite;
}
@keyframes blink { from, to { border-color: transparent } 50% { border-color: var(--accent-light); } }

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
}
.hero-btns {
    display: flex;
    gap: 1.5rem;
}

/* Button UI */
.btn {
    padding: 1rem 2.2rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 8px;
    text-decoration: none;
    transition: var(--transition-smooth);
    display: inline-block;
}
.btn-primary {
    background: var(--accent);
    color: white;
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.3);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 30px rgba(37, 99, 235, 0.5);
    background: #1d4ed8;
}
.btn-secondary {
    border: 1px solid var(--border);
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.02);
}
.btn-secondary:hover {
    background: var(--bg-surface);
    border-color: var(--text-dark);
    transform: translateY(-3px);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-dark);
    font-size: 0.8rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}
.mouse {
    width: 22px;
    height: 38px;
    border: 2px solid var(--border);
    border-radius: 20px;
    position: relative;
}
.wheel {
    width: 4px;
    height: 8px;
    background: var(--accent-light);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollMouse 1.5s infinite;
}
@keyframes scrollMouse { 0% { top: 6px; opacity: 1; } 100% { top: 18px; opacity: 0; } }

/* Section Header Typography */
.section-header {
    margin-bottom: 4rem;
}
.section-header.center {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 4rem auto;
}
.sub-heading {
    font-size: 0.85rem;
    text-transform: uppercase;
    color: var(--accent-light);
    letter-spacing: 3px;
    font-weight: 700;
    display: block;
    margin-bottom: 0.5rem;
}
.main-heading {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    letter-spacing: -1px;
}

/* About Layout */
.about-grid {
    display: grid;
    grid-template-columns: 1.2lfr 1fr;
    gap: 4rem;
    align-items: start;
}
.about-info h3, .skills-wrapper h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}
.about-info p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}
.about-meta {
    margin-top: 2rem;
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
}
.meta-item {
    margin-bottom: 0.75rem;
    font-size: 1rem;
}
.meta-item strong { color: var(--text-primary); margin-right: 0.5rem; }
.meta-item span { color: var(--text-secondary); }

.skill-category {
    margin-bottom: 2rem;
}
.skill-category h4 {
    font-size: 1rem;
    color: var(--text-dark);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}
.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}
.tag {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: var(--transition-smooth);
}
.tag:hover {
    border-color: var(--accent-light);
    background: rgba(37, 99, 235, 0.05);
    transform: translateY(-2px);
}

/* Portfolio Layout */
.filter-tabs {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}
.filter-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 0.5rem 1.2rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-smooth);
}
.filter-btn:hover, .filter-btn.active {
    background: var(--text-primary);
    color: var(--bg-main);
    border-color: var(--text-primary);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(450px, 1fr));
    gap: 2rem;
}
.portfolio-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition-smooth);
}
.portfolio-card:hover {
    transform: translateY(-6px);
    border-color: #333345;
    box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}
.card-image-placeholder {
    height: 200px;
    background: linear-gradient(135deg, #181824 0%, #111116 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border);
    position: relative;
}
.icon-box {
    font-size: 3rem;
    opacity: 0.7;
    transition: var(--transition-smooth);
}
.portfolio-card:hover .icon-box {
    transform: scale(1.1);
    opacity: 1;
}
.card-content {
    padding: 2rem;
}
.card-cat {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--accent-light);
    letter-spacing: 1.5px;
    font-weight: 600;
    display: block;
    margin-bottom: 0.5rem;
}
.card-content h3 {
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
    font-weight: 700;
}
.card-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}
.card-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.card-tags span {
    font-size: 0.75rem;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    color: var(--text-dark);
}

/* Contact Network Section */
.contact-box {
    background: linear-gradient(180deg, var(--bg-surface) 0%, rgba(18,18,22,0.4) 100%);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 5rem 2rem;
}
.email-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: 4rem;
}
.email-btn {
    background: var(--bg-main);
    border: 1px solid var(--border);
    padding: 1.2rem 2.5rem;
    border-radius: 50px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition-smooth);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}
.email-btn:hover {
    border-color: var(--accent-light);
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(37, 99, 235, 0.15);
}
.email-icon {
    font-size: 1.4rem;
}

.social-channels {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    max-width: 800px;
    margin: 0 auto;
}
.social-card {
    background: var(--bg-main);
    border: 1px solid var(--border);
    padding: 1.5rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition-smooth);
}
.social-icon {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-surface);
    color: var(--text-secondary);
    transition: var(--transition-smooth);
}
.social-icon svg {
    width: 22px;
    height: 22px;
}
.social-meta span {
    display: block;
    font-size: 0.8rem;
    color: var(--text-dark);
}
.social-meta strong {
    font-size: 1.05rem;
    font-weight: 600;
}

/* Custom Thematic Hover Colors for Profiles */
.social-card.fb:hover { border-color: #1877f2; }
.social-card.fb:hover .social-icon { background: rgba(24, 119, 242, 0.1); color: #1877f2; }

.social-card.ig:hover { border-color: #we1c4a; /* Instagram style gradient trigger handled uniformly */ border-color: #e1306c; }
.social-card.ig:hover .social-icon { background: rgba(225, 48, 108, 0.1); color: #e1306c; }

.social-card.tt:hover { border-color: #00f2fe; }
.social-card.tt:hover .social-icon { background: rgba(0, 242, 254, 0.1); color: #00f2fe; }

/* Global Scroll Animations Classes */
.reveal-up, .reveal-left, .reveal-right {
    opacity: 0;
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform, opacity;
}
.reveal-up { transform: translateY(40px); }
.reveal-left { transform: translateX(-40px); }
.reveal-right { transform: translateX(40px); }

.reveal-up.active, .reveal-left.active, .reveal-right.active {
    opacity: 1;
    transform: translate(0, 0);
}

/* Footer Section */
.footer {
    text-align: center;
    padding: 4rem 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-dark);
    font-size: 0.9rem;
}

/* Responsive Infrastructure */
@media (max-width: 968px) {
    .about-grid { grid-template-columns: 1fr; gap: 3rem; }
    .portfolio-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 70%;
        background: var(--bg-surface);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 3rem;
        transition: var(--transition-smooth);
        border-left: 1px solid var(--border);
    }
    .nav-menu.active { right: 0; }
    .menu-toggle { display: flex; }
    .menu-toggle.active .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .menu-toggle.active .bar:nth-child(2) { opacity: 0; }
    .menu-toggle.active .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    .section-padding { padding: 5rem 0; }
}