*{
    margin: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background: #0f172a;
    color: #fff;
}

a {
    text-decoration: none;
}

section {
    padding: 100px 0;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
}

.section-subtitle {
    color: #cbd5e1;
}

/* ================= HEADER ================= */

.navbar {
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-size: 28px;
    font-weight: 700;
}

.nav-link {
    color: #fff !important;
    transition: 0.3s;
}

.nav-link:hover {
    color: #06b6d4 !important;
}

/* ================= HERO ================= */

.hero {
    min-height: 100vh;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.hero video {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.75);
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-img {
    width: 350px;
    height: 350px;
    object-fit: cover;
    border-radius: 50%;
    border: 6px solid #fff;
    box-shadow: 0 0 30px rgba(6,182,212,0.5);
}

.hero-title {
    font-size: 60px;
    font-weight: 700;
    line-height: 1.2;
}

.hero-title span {
    color: #06b6d4;
}

.hero-text {
    color: #cbd5e1;
    font-size: 20px;
}

/* ================= BUTTONS ================= */

.custom-btn {
    padding: 14px 28px;
    border-radius: 40px;
    font-weight: 600;
}

.btn-info {
    background: #06b6d4;
    border: none;
}

.btn-info:hover {
    background: #0891b2;
}

.btn-outline-light:hover {
    color: #000;
}

/* ================= ABOUT ================= */

.about-card,
.experience-card,
.contact-box {
    background: #111827;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.08);
}

.about-img {
    width: 300px;
    height: 300px;
    object-fit: cover;
    border-radius: 50%;
    border: 5px solid #fff;
    box-shadow: 0 0 30px rgba(6,182,212,0.4);
}

/* ================= SKILLS ================= */

#skills {
    background: #020617;
}

.skill-card {
    background: linear-gradient(145deg,#111827,#1e293b);
    border-radius: 20px;
    transition: 0.4s;
    border: 1px solid rgba(255,255,255,0.08);
}

.skill-card:hover {
    transform: translateY(-10px);
    border-color: #06b6d4;
    box-shadow: 0 0 25px rgba(6,182,212,0.4);
}

.skill-card i {
    font-size: 55px;
    color: #06b6d4;
}

.skill-card h5 {
    color: #fff;
}

/* ================= EXPERIENCE ================= */

.experience-card {
    border-left: 5px solid #06b6d4;
    transition: 0.3s;
}

.experience-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 0 25px rgba(6,182,212,0.3);
}

.experience-date {
    color: #06b6d4;
    font-weight: 600;
}

/* ================= PROJECTS ================= */

#projects {
    background: #dee1e2;
    color: #111827;
}

#projects .section-subtitle {
    color: #475569;
}

.project-card {
    background: #fff;
    border-radius: 20px;
    transition: 0.3s;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.project-card:hover {
    transform: translateY(-10px);
}

.project-card p {
    color: #475569;
}

/* ================= FORM ================= */

.form-control {
    background: #1e293b;
    border: 1px solid #334155;
    color: #fff;
    padding: 14px;
}

.form-control:focus {
    background: #1e293b;
    color: #fff;
    box-shadow: none;
    border-color: #06b6d4;
}

/* ================= GO TOP ================= */

#goTopBtn {
    position: fixed;
    right: 25px;
    bottom: 25px;
    width: 50px;
    height: 50px;
    background: #06b6d4;
    color: #fff;
    border-radius: 50%;
    display: none;
    z-index: 999;
}

#goTopBtn:hover {
    background: #0891b2;
}

/* ================= RESPONSIVE ================= */

@media(max-width: 991px) {

    .hero {
        text-align: center;
    }

    .hero-title {
        font-size: 42px;
    }

    .hero-img {
        width: 260px;
        height: 260px;
    }

}