@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800;900&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
    border: none;
    outline: none;
    scroll-behavior: smooth;
    font-family: 'Poppins', sans-serif;
}

:root {
    --bg-color: #0a0e1a;
    --second-bg-color: #111827;
    --card-bg: rgba(17, 24, 39, 0.7);
    --text-color: #e2e8f0;
    --text-muted: #94a3b8;
    --main-color: #38bdf8;
    --accent-color: #a78bfa;
    --gradient-start: #38bdf8;
    --gradient-end: #a78bfa;
    --glow-color: rgba(56, 189, 248, 0.3);
    --glow-accent: rgba(167, 139, 250, 0.3);
}

html {
    font-size: 62.5%;
    overflow-x: hidden;
}

body {
    background: var(--bg-color);
    color: var(--text-color);
    overflow-x: hidden;
}

/* ===== Animated background particles ===== */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    border-radius: 50%;
    animation: floatParticle linear infinite;
    opacity: 0;
}

@keyframes floatParticle {
    0% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-10vh) scale(1);
        opacity: 0;
    }
}

/* ===== Parallax background layers ===== */
.parallax-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.parallax-layer {
    position: absolute;
    width: 100%;
    height: 100%;
    will-change: transform;
}

.parallax-layer--stars {
    background-image:
        radial-gradient(2px 2px at 20% 30%, rgba(255,255,255,0.8), transparent),
        radial-gradient(2px 2px at 40% 70%, rgba(255,255,255,0.6), transparent),
        radial-gradient(1px 1px at 60% 20%, rgba(255,255,255,0.7), transparent),
        radial-gradient(1px 1px at 80% 50%, rgba(255,255,255,0.5), transparent),
        radial-gradient(2px 2px at 10% 80%, rgba(255,255,255,0.6), transparent),
        radial-gradient(1px 1px at 70% 90%, rgba(255,255,255,0.4), transparent),
        radial-gradient(2px 2px at 50% 10%, rgba(255,255,255,0.7), transparent),
        radial-gradient(1px 1px at 90% 40%, rgba(255,255,255,0.5), transparent),
        radial-gradient(1px 1px at 30% 60%, rgba(255,255,255,0.6), transparent),
        radial-gradient(2px 2px at 15% 45%, rgba(255,255,255,0.4), transparent);
    background-size: 200% 200%;
    animation: twinkle 8s ease-in-out infinite alternate;
}

.parallax-layer--nebula {
    background:
        radial-gradient(ellipse at 20% 50%, rgba(56, 189, 248, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(167, 139, 250, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(56, 189, 248, 0.05) 0%, transparent 50%);
}

.parallax-layer--grid {
    background-image:
        linear-gradient(rgba(56, 189, 248, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(56, 189, 248, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

@keyframes twinkle {
    0% { background-position: 0% 0%; opacity: 0.6; }
    100% { background-position: 50% 50%; opacity: 1; }
}

/* ===== Section styles ===== */
section {
    min-height: 100vh;
    padding: 10rem 9% 2rem;
    position: relative;
    z-index: 1;
}

/* ===== Header / Navbar ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 2rem 9%;
    background: rgba(10, 14, 26, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(56, 189, 248, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    transition: all 0.4s ease;
}

.header.sticky {
    background: rgba(10, 14, 26, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.logo {
    font-size: 2.5rem;
    color: var(--text-color);
    font-weight: 700;
    cursor: pointer;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: 0.3s ease;
}

.logo:hover {
    filter: brightness(1.2);
}

.navbar a {
    font-size: 1.7rem;
    color: var(--text-muted);
    margin-left: 4rem;
    transition: 0.3s ease;
    position: relative;
}

.navbar a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    transition: width 0.3s ease;
    border-radius: 2px;
}

.navbar a:hover::after,
.navbar a.active::after {
    width: 100%;
}

.navbar a:hover,
.navbar a.active {
    color: var(--text-color);
}

#menu-icon {
    font-size: 3.6rem;
    color: var(--text-color);
    display: none;
    cursor: pointer;
}

/* ===== Home Section ===== */
.home {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4rem;
}

.home-content {
    max-width: 60rem;
}

.home-img {
    position: relative;
}

.home-img img {
    width: 35vw;
    max-width: 400px;
    border-radius: 50%;
    border: none;
    transition: transform 0.5s ease;
    animation: floatImg 6s ease-in-out infinite;
}

.home-img img:hover {
    transform: scale(1.05);
    box-shadow:
        0 0 40px rgba(56, 189, 248, 0.25),
        0 0 80px rgba(167, 139, 250, 0.15);
}

@keyframes floatImg {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.home-content h3 {
    font-size: 3.2rem;
    font-weight: 600;
    color: var(--text-muted);
}

.home-content h3:nth-of-type(2) {
    margin-bottom: 2rem;
}

span {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.home-content h1 {
    font-size: 5.6rem;
    font-weight: 700;
    line-height: 1.3;
    background: linear-gradient(135deg, #ffffff, #e2e8f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.home-content p {
    font-size: 1.6rem;
    color: var(--text-muted);
    line-height: 1.8;
}

/* ===== Social Media Icons ===== */
.social-media a {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 4.2rem;
    height: 4.2rem;
    background: rgba(56, 189, 248, 0.08);
    border: 2px solid rgba(56, 189, 248, 0.3);
    border-radius: 50%;
    font-size: 2rem;
    color: var(--main-color);
    margin: 3rem 1.5rem 3rem 0;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.social-media a:hover {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--bg-color);
    border-color: transparent;
    box-shadow: 0 0 20px var(--glow-color), 0 0 40px var(--glow-accent);
    transform: translateY(-5px) scale(1.1);
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 1.2rem 3rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 4rem;
    box-shadow: 0 4px 20px var(--glow-color);
    font-size: 1.6rem;
    color: var(--bg-color);
    letter-spacing: .1rem;
    font-weight: 600;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 30px var(--glow-color), 0 4px 20px var(--glow-accent);
}

/* ===== About Section ===== */
.about {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4rem;
    background: var(--second-bg-color);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(56, 189, 248, 0.05) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 50%, rgba(167, 139, 250, 0.05) 0%, transparent 60%);
    pointer-events: none;
}

.about-img {
    position: relative;
}

.about-img img {
    width: 35vw;
    max-width: 400px;
    border-radius: 2rem;
    border: 2px solid rgba(56, 189, 248, 0.15);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    transition: transform 0.5s ease;
}

.about-img img:hover {
    transform: scale(1.03) rotate(-1deg);
}

.heading {
    text-align: center;
    font-size: 4.5rem;
}

.about-content {
    position: relative;
    z-index: 1;
}

.about-content h2 {
    text-align: left;
    line-height: 1.2;
}

.about-content h3 {
    font-size: 2.6rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-content p {
    font-size: 1.3rem;
    margin: 2rem 0 3rem;
    color: var(--text-muted);
    line-height: 1.8;
}

/* ===== Tech Stack Tags ===== */
.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem;
    margin-bottom: 3rem;
}

.tech-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 2rem;
    background: var(--card-bg);
    border: 1px solid rgba(56, 189, 248, 0.15);
    border-radius: 5rem;
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-muted);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.4s ease;
    cursor: default;
}

.tech-tag i {
    font-size: 2.4rem;
    color: var(--text-muted);
    -webkit-text-fill-color: var(--text-muted);
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
    transition: color 0.4s ease, -webkit-text-fill-color 0.4s ease;
}

.tech-tag:hover {
    border-color: var(--main-color);
    background: rgba(56, 189, 248, 0.08);
    color: var(--main-color);
    box-shadow: 0 0 20px var(--glow-color);
    transform: translateY(-3px);
}

.tech-tag:hover i {
    color: var(--main-color);
    -webkit-text-fill-color: var(--main-color);
}

/* ===== Services Section ===== */
.services h2 {
    margin-bottom: 5rem;
}

.services-container {
    display: flex;
    justify-content: center;
    align-items: stretch;
    flex-wrap: wrap;
    gap: 2.5rem;
}

.services-container .services-box {
    flex: 1 1 30rem;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 3rem 2.5rem 4rem;
    border-radius: 2rem;
    text-align: center;
    border: 1px solid rgba(56, 189, 248, 0.1);
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.services-container .services-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    opacity: 0;
    transition: opacity 0.4s ease;
}

.services-container .services-box:hover::before {
    opacity: 1;
}

.services-container .services-box:hover {
    border-color: rgba(56, 189, 248, 0.3);
    transform: translateY(-10px);
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.3),
        0 0 30px var(--glow-color);
}

.services-box .service-icon i {
    font-size: 6rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.services-box h3 {
    font-size: 2.6rem;
    color: var(--text-color);
}

.services-box p {
    font-size: 1.6rem;
    margin: 1rem 0 3rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--main-color);
    transition: all 0.3s ease;
    text-decoration: none;
}

.service-link i {
    font-size: 1.6rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: transform 0.3s ease;
}

.service-link:hover {
    gap: 1.2rem;
}

.service-link:hover i {
    transform: translateX(4px);
}

/* ===== Portfolio Section ===== */
.portfolio {
    background: var(--second-bg-color);
}

.portfolio h2 {
    margin-bottom: 5rem;
}

.portfolio-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
    gap: 2.5rem;
}

.portfolio-box {
    position: relative;
    border-radius: 2rem;
    overflow: hidden;
    border: 1px solid rgba(56, 189, 248, 0.1);
    transition: all 0.5s ease;
}

.portfolio-box img {
    width: 100%;
    height: 25rem;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.portfolio-box:hover img {
    transform: scale(1.1);
}

.portfolio-layer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(10, 14, 26, 0.95), transparent);
    display: flex;
    justify-content: center;
    align-items: flex-end;
    padding: 2rem;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.portfolio-box:hover .portfolio-layer {
    opacity: 1;
}

.portfolio-layer h4 {
    font-size: 2rem;
    color: var(--text-color);
}

.portfolio-layer p {
    font-size: 1.3rem;
    color: var(--text-muted);
}

/* ===== Contact Section ===== */
.contact h2 {
    margin-bottom: 3rem;
}

.contact form {
    max-width: 100%;
    margin: 1rem auto;
    text-align: center;
}

.contact form .input-box {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.contact form .input-box .input-field {
    width: 49%;
}

.contact form .input-box input {
    width: 100%;
}

.input-field,
.textarea-field {
    position: relative;
}

.input-field i,
.textarea-field i {
    position: absolute;
    right: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 2rem;
    color: var(--text-muted);
    pointer-events: none;
}

.textarea-field i {
    top: 2.5rem;
    transform: none;
}

.input-field input {
    padding-right: 4.5rem;
}

.textarea-field textarea {
    padding-right: 4.5rem;
}

.contact form input,
.contact form textarea {
    width: 100%;
    padding: 1.5rem;
    font-size: 1.6rem;
    color: var(--text-color);
    background: var(--card-bg);
    border-radius: 1rem;
    margin: 0.7rem 0;
    border: 1px solid rgba(56, 189, 248, 0.15);
    backdrop-filter: blur(10px);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    font-family: 'Poppins', sans-serif;
}

.contact form input:focus,
.contact form textarea:focus {
    border-color: var(--main-color);
    box-shadow: 0 0 15px var(--glow-color);
}

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

.contact form textarea {
    resize: vertical;
}

.contact form .btn {
    margin-top: 2rem;
    cursor: pointer;
}

/* ===== Footer ===== */
.footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    padding: 2rem 9%;
    background: rgba(10, 14, 26, 0.95);
    border-top: 1px solid rgba(56, 189, 248, 0.1);
    position: relative;
    z-index: 1;
}

.footer-text p {
    font-size: 1.4rem;
    color: var(--text-muted);
}

.footer-iconTop a {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: .8rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: .8rem;
    color: var(--bg-color);
    font-size: 2.4rem;
    transition: all 0.4s ease;
}

.footer-iconTop a:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 20px var(--glow-color);
}

/* ===== GitHub Floating Button ===== */
.github-float {
    position: fixed;
    bottom: 3rem;
    left: 3rem;
    z-index: 99;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.2rem 2rem;
    background: rgba(17, 24, 39, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 5rem;
    color: var(--text-color);
    font-size: 1.5rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.github-float i {
    font-size: 2.4rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.github-float span {
    -webkit-text-fill-color: var(--text-color);
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
}

.github-float:hover {
    transform: translateY(-5px) scale(1.05);
    border-color: var(--main-color);
    box-shadow:
        0 8px 30px rgba(0, 0, 0, 0.4),
        0 0 20px var(--glow-color);
}

/* ===== Parallax section overlays ===== */
.parallax-section {
    position: relative;
    overflow: hidden;
}

.parallax-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    pointer-events: none;
    z-index: 0;
}

.parallax-section > * {
    position: relative;
    z-index: 1;
}

/* ===== Scroll animations ===== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ===== Responsive ===== */
@media (max-width: 1200px) {
    html { font-size: 55%; }
}

@media (max-width: 991px) {
    .header {
        padding: 2rem 3%;
    }

    section {
        padding: 10rem 3% 2rem;
    }

    .services {
        padding-bottom: 7rem;
    }

    .footer {
        padding: 2rem 3%;
    }
}

@media (max-width: 768px) {
    #menu-icon {
        display: block;
    }

    .navbar {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        padding: 1rem 3%;
        background: rgba(10, 14, 26, 0.95);
        backdrop-filter: blur(16px);
        border-top: 1px solid rgba(56, 189, 248, 0.1);
        display: none;
    }

    .navbar.active {
        display: block;
    }

    .navbar a {
        display: block;
        font-size: 2rem;
        margin: 2rem 0;
    }

    .home {
        flex-direction: column;
        text-align: center;
    }

    .home-content h1 {
        font-size: 4rem;
    }

    .home-img img {
        width: 60vw;
    }

    .about {
        flex-direction: column-reverse;
        text-align: center;
    }

    .about-img img {
        width: 60vw;
    }

    .about-content h2 {
        text-align: center;
    }

    .github-float {
        bottom: 2rem;
        left: 2rem;
        padding: 1rem 1.5rem;
        font-size: 1.3rem;
    }

    .github-float span {
        display: none;
    }
}

@media (max-width: 450px) {
    html { font-size: 50%; }

    .contact form .input-box input {
        width: 100%;
    }
}