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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background: #f5f7fa;
    color: #111827;
    line-height: 1.7;
}

/* =========================================================
   GLOBAL
========================================================= */

.wrapper {
    width: 90%;
    max-width: 1280px;
    margin: auto;
}

.section-label {
    color: #0A84FF;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
}

/* =========================================================
   TOPBAR
========================================================= */

.topbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 999;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.navbar {
    height: 84px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-logo {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: #0A84FF;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 22px;
}

.brand h1 {
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 1px;
}

.brand span {
    font-size: 11px;
    color: #6b7280;
}

.desktop-menu {
    display: flex;
    gap: 40px;
}

.desktop-menu a,
.mobile-menu a {
    text-decoration: none;
    color: #111827;
    font-size: 14px;
    transition: 0.3s;
}

.desktop-menu a:hover,
.mobile-menu a:hover {
    color: #0A84FF;
}

.mobile-button {
    display: none;
    border: none;
    background: transparent;
    font-size: 28px;
    cursor: pointer;
}

.mobile-menu {
    display: none;
    flex-direction: column;
    padding: 20px 5%;
    background: white;
    border-top: 1px solid rgba(0,0,0,0.05);
}

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

.mobile-menu a {
    padding: 12px 0;
}

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

.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 120px;
    overflow: hidden;

    background:
    radial-gradient(circle at top right, rgba(10,132,255,0.10), transparent 25%),
    #f5f7fa;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
}

.hero-tag {
    color: #0A84FF;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
}

.hero-left h2 {
    font-size: 74px;
    line-height: 1.05;
    margin: 24px 0;
    font-weight: 800;
}

.hero-left p {
    font-size: 18px;
    color: #4b5563;
    max-width: 620px;
}

.hero-action {
    display: flex;
    gap: 18px;
    margin-top: 40px;
}

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

.btn-primary,
.btn-secondary {
    padding: 15px 28px;
    border-radius: 100px;
    text-decoration: none;
    transition: 0.3s;
    font-weight: 600;
}

.btn-primary {
    background: #0A84FF;
    color: white;
}

.btn-primary:hover {
    transform: translateY(-3px);
}

.btn-secondary {
    border: 1px solid rgba(0,0,0,0.1);
    color: #111827;
    background: white;
}

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

.hero-visual {
    position: relative;
    height: 520px;
}

.visual-line {
    position: absolute;
    background: rgba(10,132,255,0.12);
}

.line-1 {
    width: 2px;
    height: 100%;
    left: 50%;
}

.line-2 {
    width: 100%;
    height: 2px;
    top: 50%;
}

.line-3 {
    width: 2px;
    height: 70%;
    right: 15%;
}

.visual-box {
    position: absolute;
    border: 1px solid rgba(10,132,255,0.25);
    background: rgba(255,255,255,0.6);
    backdrop-filter: blur(10px);
}

.box-1 {
    width: 220px;
    height: 220px;
    top: 40px;
    left: 60px;
}

.box-2 {
    width: 180px;
    height: 180px;
    bottom: 60px;
    right: 60px;
}

.box-3 {
    width: 120px;
    height: 120px;
    top: 180px;
    right: 120px;
}

.visual-circle {
    position: absolute;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: rgba(10,132,255,0.08);
    bottom: 40px;
    left: 100px;
    filter: blur(10px);
}

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

.about-section {
    padding: 120px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 60px;
}

.about-grid h3 {
    font-size: 48px;
    line-height: 1.15;
    margin-top: 18px;
}

.about-content p {
    font-size: 18px;
    color: #4b5563;
    margin-bottom: 24px;
}

/* =========================================================
   SERVICES
========================================================= */

.services-section {
    padding: 120px 0;
    background: white;
}

.service-list {
    margin-top: 60px;
}

.service-item {
    display: grid;
    grid-template-columns: 100px 1fr 1fr;
    gap: 30px;
    align-items: center;
    padding: 34px 0;
    border-bottom: 1px solid rgba(0,0,0,0.08);
    transition: 0.3s;
}

.service-item:hover {
    transform: translateX(10px);
}

.service-item span {
    color: #0A84FF;
    font-size: 18px;
    font-weight: 700;
}

.service-item h4 {
    font-size: 30px;
}

.service-item p {
    color: #6b7280;
}

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

.projects-section {
    padding: 120px 0;
}

.project-header h3 {
    font-size: 48px;
    line-height: 1.15;
    margin-top: 18px;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(280px,1fr));
    gap: 30px;
    margin-top: 60px;
}

.project-card {
    background: white;
    border-radius: 24px;
    overflow: hidden;
    transition: 0.3s;
}

.project-card:hover {
    transform: translateY(-8px);
}

.project-image {
    height: 260px;

    background:
    linear-gradient(
        135deg,
        #dbeafe,
        #bfdbfe
    );
}

.project-card h4 {
    padding: 28px;
    font-size: 22px;
}

/* =========================================================
   CONTACT
========================================================= */

.contact-section {
    padding: 120px 0;
}

.contact-box {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 40px;

    border-top: 1px solid rgba(0,0,0,0.08);

    padding-top: 60px;
}

.contact-box h3 {
    font-size: 48px;
    line-height: 1.15;
    margin-top: 18px;
}

.contact-info p {
    font-size: 18px;
    margin-bottom: 10px;
    color: #374151;
}

/* =========================================================
   FOOTER
========================================================= */

.footer {
    padding: 40px 0;
    text-align: center;
    color: #6b7280;
}

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

@media(max-width: 992px) {

    .hero-grid,
    .about-grid,
    .contact-box,
    .service-item {
        grid-template-columns: 1fr;
        display: grid;
    }

    .hero-left h2 {
        font-size: 52px;
    }

    .hero-visual {
        height: 380px;
    }
}

@media(max-width: 768px) {

    .desktop-menu {
        display: none;
    }

    .mobile-button {
        display: block;
    }

    .hero-left h2,
    .about-grid h3,
    .project-header h3,
    .contact-box h3 {
        font-size: 38px;
    }

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

    .about-section,
    .services-section,
    .projects-section,
    .contact-section {
        padding: 80px 0;
    }
}