/* ─────────────────────────────────────────────────
   CSS Custom Properties (Design Tokens)
───────────────────────────────────────────────── */
:root {
    --clr-bg: #080c14;
    --clr-surface: #0d1220;
    --clr-card: #111827;
    --clr-border: #1e2d45;
    --clr-blue: #00b4ff;
    --clr-blue-dim: #0072a3;
    --clr-blue-glow: rgba(0, 180, 255, 0.18);
    --clr-accent: #00e5ff;
    --clr-text: #e2e8f0;
    --clr-muted: #8899aa;
    --clr-white: #ffffff;
    --font-head: 'Orbitron', sans-serif;
    --font-body: 'Space Grotesk', sans-serif;
    --radius: 12px;
    --radius-lg: 20px;
    --transition: 0.3s cubic-bezier(.4, 0, .2, 1);
}

/* ─────────────────────────────────────────────────
   Reset & Base
───────────────────────────────────────────────── */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--clr-bg);
    color: var(--clr-text);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    color: var(--clr-blue);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--clr-accent);
}

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

section {
    padding: 100px 0;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* ─────────────────────────────────────────────────
   Scrollbar
───────────────────────────────────────────────── */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--clr-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--clr-blue-dim);
    border-radius: 3px;
}

/* ─────────────────────────────────────────────────
   Section Heading
───────────────────────────────────────────────── */
.section-label {
    font-family: var(--font-head);
    font-size: 0.7rem;
    letter-spacing: 0.25em;
    color: var(--clr-blue);
    text-transform: uppercase;
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-head);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 700;
    color: var(--clr-white);
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-title span {
    color: var(--clr-blue);
}

.section-description {
    color: var(--clr-muted);
    max-width: 560px;
    font-size: 1.05rem;
}

.section-heading {
    margin-bottom: 60px;
}

/* ─────────────────────────────────────────────────
   Buttons
───────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: var(--radius);
    font-family: var(--font-head);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
}

.btn-primary {
    background: var(--clr-blue);
    color: #000;
    box-shadow: 0 0 24px rgba(0, 180, 255, 0.4);
}

.btn-primary:hover {
    background: var(--clr-accent);
    box-shadow: 0 0 40px rgba(0, 229, 255, 0.6);
    transform: translateY(-2px);
    color: #000;
}

.btn-outline {
    background: transparent;
    color: var(--clr-blue);
    border: 1.5px solid var(--clr-blue);
}

.btn-outline:hover {
    background: var(--clr-blue-glow);
    box-shadow: 0 0 20px rgba(0, 180, 255, 0.3);
    transform: translateY(-2px);
    color: var(--clr-blue);
}

/* ─────────────────────────────────────────────────
   Navigation
───────────────────────────────────────────────── */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all 0.4s ease;
}

#navbar.scrolled {
    background: rgba(8, 12, 20, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--clr-border);
    padding: 14px 0;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-head);
    font-size: 1.2rem;
    font-weight: 900;
    color: var(--clr-white);
    letter-spacing: 0.05em;
}

.nav-logo span {
    color: var(--clr-blue);
}

.nav-links {
    display: flex;
    gap: 36px;
    list-style: none;
}

.nav-links a {
    font-family: var(--font-head);
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--clr-muted);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    transition: color var(--transition);
}

.nav-links a:hover {
    color: var(--clr-blue);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--clr-text);
    border-radius: 2px;
    transition: all var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
    display: none;
    flex-direction: column;
    gap: 0;
    background: rgba(8, 12, 20, 0.98);
    border-top: 1px solid var(--clr-border);
    padding: 20px 0;
}

.mobile-menu.open {
    display: flex;
}

.mobile-menu a {
    font-family: var(--font-head);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--clr-muted);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 14px 5%;
    border-bottom: 1px solid var(--clr-border);
    transition: color var(--transition), background var(--transition);
}

.mobile-menu a:hover {
    color: var(--clr-blue);
    background: var(--clr-blue-glow);
}

/* ─────────────────────────────────────────────────
   Hero Section
───────────────────────────────────────────────── */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 120px 0 80px;
}

/* Animated grid background */
.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 180, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 180, 255, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% {
        transform: perspective(500px) rotateX(0deg) translateY(0);
    }

    100% {
        transform: perspective(500px) rotateX(0deg) translateY(60px);
    }
}

/* Glow orb */
.hero-orb {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 180, 255, 0.12) 0%, transparent 70%);
    top: 50%;
    right: -100px;
    transform: translateY(-50%);
    animation: orbPulse 6s ease-in-out infinite;
    pointer-events: none;
}

@keyframes orbPulse {

    0%,
    100% {
        opacity: 0.6;
        transform: translateY(-50%) scale(1);
    }

    50% {
        opacity: 1;
        transform: translateY(-50%) scale(1.06);
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--clr-border);
    background: rgba(255, 255, 255, 0.03);
    border-radius: 100px;
    padding: 6px 18px;
    font-family: var(--font-head);
    font-size: 0.68rem;
    color: var(--clr-blue);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    margin-bottom: 28px;
}

.hero-badge::before {
    content: '';
    display: block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--clr-blue);
    box-shadow: 0 0 8px var(--clr-blue);
    animation: blink 1.8s ease-in-out infinite;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }
}

.hero-heading {
    font-family: var(--font-head);
    font-size: clamp(2.4rem, 6vw, 5rem);
    font-weight: 900;
    line-height: 1.08;
    color: var(--clr-white);
    margin-bottom: 20px;
}

.hero-heading .name {
    color: var(--clr-blue);
    display: block;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.3rem);
    color: var(--clr-muted);
    margin-bottom: 40px;
    font-weight: 400;
}

.hero-subtitle .highlight {
    color: var(--clr-text);
    font-weight: 600;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Animated scroll hint */
.scroll-hint {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    z-index: 2;
}

.scroll-hint span {
    font-family: var(--font-head);
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    color: var(--clr-muted);
    text-transform: uppercase;
}

.scroll-mouse {
    width: 22px;
    height: 34px;
    border: 1.5px solid var(--clr-border);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 6px;
}

.scroll-dot {
    width: 3px;
    height: 8px;
    background: var(--clr-blue);
    border-radius: 2px;
    animation: scrollDown 1.8s ease-in-out infinite;
}

@keyframes scrollDown {
    0% {
        transform: translateY(0);
        opacity: 1;
    }

    100% {
        transform: translateY(8px);
        opacity: 0;
    }
}

/* ─────────────────────────────────────────────────
   About Section
───────────────────────────────────────────────── */
#about {
    background: var(--clr-surface);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.6fr;
    gap: 80px;
    align-items: center;
}

.about-photo-wrapper {
    position: relative;
}

.about-photo {
    width: 100%;
    aspect-ratio: 3/4;
    border-radius: var(--radius-lg);
    object-fit: cover;
    border: 1px solid var(--clr-border);
    filter: grayscale(20%);
    transition: filter var(--transition);
}

.about-photo:hover {
    filter: grayscale(0);
}

/* Decorative frame */
.about-photo-wrapper::before {
    content: '';
    position: absolute;
    inset: -12px;
    border: 1.5px solid var(--clr-blue);
    border-radius: calc(var(--radius-lg) + 4px);
    opacity: 0.3;
    animation: frameGlow 4s ease-in-out infinite;
}

@keyframes frameGlow {

    0%,
    100% {
        opacity: 0.3;
    }

    50% {
        opacity: 0.55;
    }
}

.about-photo-wrapper::after {
    content: '';
    position: absolute;
    bottom: -16px;
    right: -16px;
    width: 80px;
    height: 80px;
    border-right: 2px solid var(--clr-blue);
    border-bottom: 2px solid var(--clr-blue);
    opacity: 0.5;
    border-radius: 0 0 8px 0;
}

/* Corner accent top-left */
.about-photo-wrapper .corner-tl {
    position: absolute;
    top: -16px;
    left: -16px;
    width: 80px;
    height: 80px;
    border-left: 2px solid var(--clr-blue);
    border-top: 2px solid var(--clr-blue);
    opacity: 0.5;
    border-radius: 8px 0 0 0;
}

.about-text p {
    color: var(--clr-muted);
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.about-text p strong {
    color: var(--clr-text);
}

.about-stats {
    display: flex;
    gap: 40px;
    margin-top: 36px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-value {
    font-family: var(--font-head);
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--clr-blue);
    line-height: 1;
}

.stat-label {
    font-size: 0.78rem;
    color: var(--clr-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ─────────────────────────────────────────────────
   Skills Section
───────────────────────────────────────────────── */
#skills {
    background: var(--clr-bg);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
}

.skill-category {
    background: var(--clr-card);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-lg);
    padding: 36px 32px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--clr-blue), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.skill-category:hover {
    border-color: var(--clr-blue-dim);
    transform: translateY(-4px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.skill-category:hover::before {
    opacity: 1;
}

.skill-category-icon {
    font-size: 2.4rem;
    margin-bottom: 20px;
    display: block;
}

.skill-category-title {
    font-family: var(--font-head);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--clr-blue);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    padding: 7px 16px;
    border-radius: 100px;
    font-size: 0.82rem;
    font-weight: 500;
    border: 1px solid var(--clr-border);
    color: var(--clr-text);
    background: rgba(255, 255, 255, 0.03);
    transition: all var(--transition);
}

.skill-tag:hover {
    border-color: var(--clr-blue);
    color: var(--clr-blue);
    background: var(--clr-blue-glow);
}

/* ─────────────────────────────────────────────────
   Projects Section
───────────────────────────────────────────────── */
#projects {
    background: var(--clr-surface);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.project-card {
    background: var(--clr-card);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    border-color: var(--clr-blue-dim);
    transform: translateY(-6px);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4), 0 0 40px rgba(0, 180, 255, 0.08);
}

.project-image-wrapper {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 10;
    background: var(--clr-surface);
}

.project-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 20%;
    transition: transform 0.6s cubic-bezier(.4, 0, .2, 1);
}

.project-card:hover .project-image {
    transform: scale(1.06);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, rgba(8, 12, 20, 0.85) 0%, transparent 60%);
}

.project-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    padding: 4px 12px;
    border-radius: 100px;
    font-family: var(--font-head);
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    background: rgba(0, 180, 255, 0.2);
    border: 1px solid rgba(0, 180, 255, 0.4);
    color: var(--clr-blue);
}

.project-body {
    padding: 28px 28px 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-title {
    font-family: var(--font-head);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--clr-white);
    margin-bottom: 12px;
    line-height: 1.3;
}

.project-description {
    color: var(--clr-muted);
    font-size: 0.92rem;
    line-height: 1.65;
    flex: 1;
    margin-bottom: 24px;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.tech-pill {
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 500;
    background: rgba(0, 180, 255, 0.07);
    border: 1px solid rgba(0, 180, 255, 0.2);
    color: var(--clr-blue);
}

.project-links {
    display: flex;
    gap: 12px;
}

/* ─────────────────────────────────────────────────
   Contact Section
───────────────────────────────────────────────── */
#contact {
    background: var(--clr-bg);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 80px;
    align-items: start;
}

.contact-info h3 {
    font-family: var(--font-head);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--clr-white);
    margin-bottom: 16px;
}

.contact-info p {
    color: var(--clr-muted);
    font-size: 0.98rem;
    margin-bottom: 40px;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 20px;
    background: var(--clr-card);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius);
    transition: all var(--transition);
    color: var(--clr-text);
}

.contact-link:hover {
    border-color: var(--clr-blue-dim);
    background: var(--clr-blue-glow);
    color: var(--clr-blue);
    transform: translateX(4px);
}

.contact-link-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: rgba(0, 180, 255, 0.1);
    border: 1px solid rgba(0, 180, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-link-label {
    font-size: 0.78rem;
    color: var(--clr-muted);
    font-family: var(--font-head);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.contact-link-value {
    font-size: 0.95rem;
    font-weight: 600;
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-family: var(--font-head);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--clr-blue);
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.form-group input,
.form-group textarea {
    background: var(--clr-card);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius);
    padding: 14px 18px;
    color: var(--clr-text);
    font-family: var(--font-body);
    font-size: 0.95rem;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
    resize: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--clr-muted);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--clr-blue);
    box-shadow: 0 0 0 3px rgba(0, 180, 255, 0.12);
}

.form-group textarea {
    height: 140px;
}

.form-success {
    display: none;
    text-align: center;
    padding: 24px;
    background: rgba(0, 180, 255, 0.07);
    border: 1px solid rgba(0, 180, 255, 0.25);
    border-radius: var(--radius);
    color: var(--clr-blue);
    font-family: var(--font-head);
    font-size: 0.85rem;
    letter-spacing: 0.08em;
}

/* ─────────────────────────────────────────────────
   Footer
───────────────────────────────────────────────── */
footer {
    background: var(--clr-surface);
    border-top: 1px solid var(--clr-border);
    padding: 40px 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-logo {
    font-family: var(--font-head);
    font-size: 1rem;
    font-weight: 900;
    color: var(--clr-white);
}

.footer-logo span {
    color: var(--clr-blue);
}

.footer-copy {
    font-size: 0.82rem;
    color: var(--clr-muted);
}

.footer-copy span {
    color: var(--clr-blue);
}

.footer-socials {
    display: flex;
    gap: 14px;
}

.footer-social-link {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--clr-card);
    border: 1px solid var(--clr-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-muted);
    font-size: 1rem;
    transition: all var(--transition);
}

.footer-social-link:hover {
    border-color: var(--clr-blue);
    color: var(--clr-blue);
    background: var(--clr-blue-glow);
    transform: translateY(-2px);
}

/* ─────────────────────────────────────────────────
   Reveal Animations
───────────────────────────────────────────────── */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 {
    transition-delay: 0.1s;
}

.reveal-delay-2 {
    transition-delay: 0.2s;
}

.reveal-delay-3 {
    transition-delay: 0.3s;
}

.reveal-delay-4 {
    transition-delay: 0.4s;
}

/* ─────────────────────────────────────────────────
   Responsive
───────────────────────────────────────────────── */
@media (max-width: 900px) {
    .nav-links {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-photo-wrapper {
        max-width: 340px;
        margin: 0 auto;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

@media (max-width: 600px) {
    section {
        padding: 70px 0;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }

    .about-stats {
        gap: 24px;
    }

    .footer-inner {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}