:root {
    --primary: #116979;
    --primary-light: #1ea6bf;

    --bg: #f5f9fb;
    --white: #ffffff;

    --text: #152b30;
    --muted: #6c8186;

    --border: rgba(17, 105, 121, 0.08);

    --shadow:
        0 20px 50px rgba(17, 105, 121, 0.08);

    --transition:
        all .4s cubic-bezier(.22,1,.36,1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
}

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

/* BACKGROUND BLUR */

.bg-blur {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
}

.blur-1 {
    width: 400px;
    height: 400px;
    background: rgba(30,166,191,0.18);

    top: -120px;
    right: -100px;
}

.blur-2 {
    width: 300px;
    height: 300px;
    background: rgba(17,105,121,0.12);

    bottom: -100px;
    left: -80px;
}

/* HEADER */

header {
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 999;

    background: rgba(255,255,255,0.7);

    backdrop-filter: blur(18px);

    border-bottom:
        1px solid rgba(255,255,255,0.4);

    transition: var(--transition);
}

.header-scrolled {
    background: rgba(255,255,255,0.9);

    box-shadow:
        0 10px 40px rgba(17,105,121,0.08);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: 18px 0;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    width: 48px;
    height: 48px;
    object-fit: cover;
    border-radius: 50%;
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;

    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--text);

    font-weight: 600;
    font-size: 0.95rem;

    transition: var(--transition);
}

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

/* BUTTON */

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    text-decoration: none;

    transition: var(--transition);

    font-weight: 700;
}

.btn-primary {
    padding: 14px 28px;

    background:
        linear-gradient(
            135deg,
            var(--primary),
            var(--primary-light)
        );

    color: white;

    border-radius: 14px;

    box-shadow:
        0 15px 35px rgba(17,105,121,0.2);
}

.btn-primary:hover {
    transform: translateY(-4px);
}

.btn-secondary {
    padding: 14px 28px;

    border-radius: 14px;

    border:
        1px solid rgba(17,105,121,0.1);

    background: rgba(255,255,255,0.6);

    backdrop-filter: blur(10px);

    color: var(--primary);
}

.btn-secondary:hover {
    transform: translateY(-4px);
}

.nav-btn {
    padding: 12px 22px;
}

/* HERO */

.hero-section {
    position: relative;
    overflow: hidden;

    padding:
        220px 0
        140px;
}

.hero-grid {
    position: absolute;
    inset: 0;

    background-image:
        linear-gradient(
            rgba(17,105,121,0.03) 1px,
            transparent 1px
        ),
        linear-gradient(
            90deg,
            rgba(17,105,121,0.03) 1px,
            transparent 1px
        );

    background-size: 40px 40px;
}

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

    text-align: center;

    max-width: 920px;
    margin: auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;

    padding: 12px 20px;

    border-radius: 999px;

    background: rgba(255,255,255,0.7);

    border:
        1px solid rgba(17,105,121,0.08);

    backdrop-filter: blur(14px);

    color: var(--primary);

    font-size: 0.9rem;
    font-weight: 700;

    margin-bottom: 30px;
}

.hero-content h1 {
    font-size: clamp(3rem, 6vw, 5.5rem);

    line-height: 1.05;

    font-weight: 800;

    letter-spacing: -3px;

    margin-bottom: 30px;
}

.gradient-text {
    background:
        linear-gradient(
            135deg,
            var(--primary),
            var(--primary-light)
        );

    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    max-width: 760px;

    margin:
        0 auto
        45px;

    color: var(--muted);

    font-size: 1.15rem;

    line-height: 1.9;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;

    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    justify-content: center;

    gap: 70px;

    margin-top: 80px;

    flex-wrap: wrap;
}

.stat-item strong {
    display: block;

    font-size: 2rem;
    color: var(--primary);

    margin-bottom: 8px;
}

.stat-item span {
    color: var(--muted);
}

/* SECTION */

.program-section,
.produk-section,
.cta-section {
    padding: 140px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 70px;
}

.section-label {
    display: inline-block;

    margin-bottom: 18px;

    color: var(--primary);

    font-weight: 700;
    font-size: 0.85rem;

    letter-spacing: 2px;
}

.section-title h2 {
    font-size: 3rem;

    margin-bottom: 20px;

    line-height: 1.1;
}

.section-title p {
    max-width: 700px;

    margin: auto;

    color: var(--muted);

    line-height: 1.8;
}

/* CARD */

.card {
    position: relative;
    overflow: hidden;

    background: rgba(255,255,255,0.7);

    backdrop-filter: blur(14px);

    border-radius: 28px;

    border:
        1px solid rgba(255,255,255,0.5);

    padding: 40px;

    transition: var(--transition);

    box-shadow: var(--shadow);
}

.card::before {
    content: "";

    position: absolute;

    width: 240px;
    height: 240px;

    background:
        radial-gradient(
            rgba(30,166,191,0.18),
            transparent 70%
        );

    top: -120px;
    right: -120px;
}

.card:hover {
    transform:
        translateY(-10px)
        scale(1.01);

    box-shadow:
        0 30px 60px rgba(17,105,121,0.12);
}

/* PROGRAM */

.program-grid {
    display: grid;

    grid-template-columns:
        repeat(auto-fit, minmax(320px, 1fr));

    gap: 30px;
}

.card-icon {
    width: 80px;
    height: 80px;

    display: flex;
    align-items: center;
    justify-content: center;

    border-radius: 20px;

    background:
        rgba(17,105,121,0.08);

    font-size: 2rem;

    margin-bottom: 24px;
}

.tag {
    display: inline-block;

    padding: 8px 14px;

    border-radius: 999px;

    font-size: 0.8rem;
    font-weight: 700;

    margin-bottom: 20px;
}

.tag-gold {
    background: rgba(212,175,55,0.12);
    color: #af8a1e;
}

.tag-blue {
    background: rgba(17,105,121,0.1);
    color: var(--primary);
}

.card h3 {
    font-size: 1.8rem;

    margin-bottom: 16px;
}

.card p {
    color: var(--muted);

    line-height: 1.9;
}

/* PRODUK */

.produk-section {
    background:
        linear-gradient(
            180deg,
            rgba(17,105,121,0.03),
            transparent
        );
}

.produk-grid {
    display: grid;

    grid-template-columns:
        repeat(auto-fit, minmax(280px, 1fr));

    gap: 25px;
}

.product-icon {
    font-size: 2rem;

    margin-bottom: 22px;
}

.product-card h4 {
    font-size: 1.2rem;

    margin-bottom: 14px;
}

/* CTA */

.cta-box {
    text-align: center;

    padding: 80px 50px;

    border-radius: 40px;

    background:
        linear-gradient(
            135deg,
            #0f5967,
            #1ba2bb
        );

    color: white;

    box-shadow:
        0 30px 70px rgba(17,105,121,0.2);
}

.cta-box h2 {
    font-size: 3rem;

    margin-bottom: 24px;
}

.cta-box p {
    max-width: 720px;

    margin:
        0 auto
        40px;

    line-height: 1.9;

    color: rgba(255,255,255,0.85);
}

.cta-box .btn-primary {
    background: white;
    color: var(--primary);
}

/* FOOTER */

footer {
    background:
        linear-gradient(
            180deg,
            #10282d,
            #08181c
        );

    padding: 70px 0;

    text-align: center;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 800;

    color: white;

    margin-bottom: 16px;
}

.footer-content p {
    color:
        rgba(255,255,255,0.65);
}

/* ANIMATION */

.animate-up {
    opacity: 0;

    transform: translateY(40px);

    transition:
        transform .8s cubic-bezier(.22,1,.36,1),
        opacity .8s ease;
}

.animate-up.appear {
    opacity: 1;
    transform: translateY(0);
}

/* MOBILE */

@media (max-width: 900px) {

    .navbar {
        flex-direction: column;
        gap: 20px;
    }

    .nav-links {
        gap: 18px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero-content h1 {
        letter-spacing: -1px;
    }

    .section-title h2,
    .cta-box h2 {
        font-size: 2.2rem;
    }

    .hero-stats {
        gap: 40px;
    }

    .cta-box {
        padding: 60px 30px;
    }

}

@media (max-width: 600px) {

    .hero-section {
        padding-top: 190px;
    }

    .hero-content h1 {
        font-size: 2.6rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

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

    .btn-primary,
    .btn-secondary {
        width: 100%;
    }

    .card {
        padding: 30px;
    }

}