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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, sans-serif;
    color: #333;
    background: #fff;
    line-height: 1.6;
}

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

a {
    text-decoration: none;
}

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

/* HEADER */
.main-header {
    background: #0d1b2a;
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 999;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.logo a {
    color: #fff;
    font-size: 28px;
    font-weight: bold;
    text-decoration: none;
    letter-spacing: 0.5px;
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-menu li a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    padding: 8px 12px;
    border-radius: 6px;
    transition: 0.3s ease;
}

.nav-menu li a:hover {
    color: #fff;
    background: #00c2ff;
}

/* HERO */
.hero-section {
    background: linear-gradient(rgba(0,0,0,0.55), rgba(0,0,0,0.55)), 
                url('https://images.unsplash.com/photo-1498050108023-c5249f4df085?auto=format&fit=crop&w=1400&q=80');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 90vh;
    display: flex;
    align-items: center;
    color: white;
    text-align: center;
}

.hero-content {
    width: 100%;
    padding: 40px 20px;
}

.hero-content h1 {
    font-size: 48px;
    margin-bottom: 15px;
    font-weight: 700;
    line-height: 1.2;
}

.hero-content p {
    font-size: 20px;
    margin-bottom: 25px;
}

.btn-main {
    display: inline-block;
    background: #00c2ff;
    color: #fff;
    padding: 12px 28px;
    text-decoration: none;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-size: 16px;
    transition: 0.3s ease;
}

.btn-main:hover {
    background: #0099cc;
    color: #fff;
}

/* SECTION */
.section {
    padding: 70px 0;
}

.bg-light {
    background: #f5f7fa;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
}

.section-title h2 {
    font-size: 36px;
    margin-bottom: 10px;
    color: #0d1b2a;
}

.section-title p {
    color: #777;
    font-size: 17px;
}

/* ABOUT */
.about-box {
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-text {
    max-width: 800px;
    text-align: center;
}

.about-text h3 {
    font-size: 30px;
    margin-bottom: 15px;
    color: #0d1b2a;
}

.about-text p {
    font-size: 17px;
    margin-bottom: 15px;
    color: #555;
}

/* SERVICES */
.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.service-card {
    background: #fff;
    padding: 30px 20px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 14px rgba(0,0,0,0.08);
    transition: 0.3s ease;
    border: 1px solid #f1f1f1;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.service-card .icon {
    font-size: 45px;
    margin-bottom: 15px;
}

.service-card h3 {
    margin-bottom: 10px;
    font-size: 22px;
    color: #0d1b2a;
}

.service-card p {
    font-size: 16px;
    color: #666;
}

/* PORTFOLIO */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.portfolio-card {
    background: #fff;
    border: 1px solid #eee;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 3px 12px rgba(0,0,0,0.06);
    transition: 0.3s ease;
}

.portfolio-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.10);
}

.portfolio-card h3 {
    font-size: 22px;
    margin-bottom: 10px;
    color: #0d1b2a;
}

.portfolio-card p {
    color: #666;
    font-size: 16px;
}

/* CONTACT */
.contact-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.contact-info,
.contact-form {
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.08);
    border: 1px solid #f1f1f1;
}

.contact-info h3 {
    font-size: 28px;
    margin-bottom: 15px;
    color: #0d1b2a;
}

.contact-info p {
    margin-bottom: 12px;
    font-size: 16px;
    color: #555;
}

.contact-form form input,
.contact-form form textarea {
    width: 100%;
    padding: 12px 14px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 6px;
    outline: none;
    font-size: 15px;
    transition: 0.3s ease;
    background: #fff;
}

.contact-form form input:focus,
.contact-form form textarea:focus {
    border-color: #00c2ff;
    box-shadow: 0 0 0 3px rgba(0, 194, 255, 0.12);
}

.contact-form form textarea {
    resize: vertical;
    min-height: 140px;
}

.success-msg {
    background: #d4edda;
    color: #155724;
    padding: 12px;
    margin-bottom: 20px;
    border-radius: 6px;
    text-align: center;
    border: 1px solid #c3e6cb;
}

/* FOOTER */
.main-footer {
    background: #0d1b2a;
    color: #fff;
    text-align: center;
    padding: 20px 0;
}

.main-footer p {
    margin-bottom: 6px;
    font-size: 15px;
}

.main-footer p:last-child {
    margin-bottom: 0;
}

/* TABLET */
@media (max-width: 992px) {
    .service-grid,
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-box {
        grid-template-columns: 1fr;
    }

    .hero-content h1 {
        font-size: 40px;
    }

    .hero-content p {
        font-size: 18px;
    }
}

/* MOBILE */
@media (max-width: 768px) {
    .section {
        padding: 50px 0;
    }

    .service-grid,
    .portfolio-grid,
    .contact-box {
        grid-template-columns: 1fr;
    }

    .nav-container {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }

    .nav-menu li a {
        font-size: 15px;
        padding: 8px 10px;
    }

    .logo a {
        font-size: 24px;
    }

    .hero-section {
        min-height: 75vh;
    }

    .hero-content {
        padding: 30px 10px;
    }

    .hero-content h1 {
        font-size: 32px;
    }

    .hero-content p {
        font-size: 17px;
    }

    .section-title h2 {
        font-size: 28px;
    }

    .about-text h3,
    .contact-info h3 {
        font-size: 24px;
    }

    .service-card,
    .portfolio-card,
    .contact-info,
    .contact-form {
        padding: 22px 18px;
    }

    .btn-main {
        padding: 11px 22px;
        font-size: 15px;
    }
}

/* SMALL MOBILE */
@media (max-width: 480px) {
    .container {
        width: 94%;
    }

    .hero-content h1 {
        font-size: 26px;
    }

    .hero-content p {
        font-size: 15px;
    }

    .section-title h2 {
        font-size: 24px;
    }

    .section-title p,
    .about-text p,
    .service-card p,
    .portfolio-card p,
    .contact-info p {
        font-size: 15px;
    }

    .logo a {
        font-size: 22px;
    }

    .nav-menu {
        gap: 8px;
    }

    .nav-menu li a {
        font-size: 14px;
        padding: 7px 9px;
    }

    .service-card h3,
    .portfolio-card h3 {
        font-size: 20px;
    }
}