* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    background: linear-gradient(180deg, #1e2f8f, #0b1c4d);
    color: #ffffff;
}

/* ================= HEADER ================= */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 14px rgba(255,255,255,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: auto;
    padding: 6px 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo {
    width: 36px;
}

.brand-text h1 {
    font-size: 15px;
    font-weight: 600;
    line-height: 1.2;
}

.brand-text span {
    font-size: 11px;
    color: #e6e9ff;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 22px;
}

nav ul li a {
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    color: #ffffff;
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 2px;
    background: #ffffff;
    box-shadow: 0 0 10px rgba(255,255,255,0.6);
    transition: 0.3s;
}

nav ul li a:hover::after,
nav ul li a.active::after {
    width: 100%;
}

/* ================= HERO ================= */
.hero {
    min-height: 100vh;
    padding-top: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    text-align: center;
    overflow: hidden;
}

.icon-bg span {
    position: absolute;
    font-size: 44px;
    opacity: 0.12;
    animation: float 16s ease-in-out infinite;
}

.icon-bg span:nth-child(1) { top: 20%; left: 12%; }
.icon-bg span:nth-child(2) { top: 65%; left: 18%; }
.icon-bg span:nth-child(3) { top: 28%; left: 82%; }
.icon-bg span:nth-child(4) { top: 75%; left: 70%; }
.icon-bg span:nth-child(5) { top: 50%; left: 48%; }

@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-18px); }
    100% { transform: translateY(0); }
}

.subtitle {
    font-size: clamp(18px, 2.4vw, 22px);
    letter-spacing: 3px;
    margin-bottom: 14px;
}

.title {
    font-size: clamp(40px, 6vw, 60px);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 26px;

    background: linear-gradient(90deg, #e93538, #ff6f61, #f8c471);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.desc {
    max-width: 820px;
    margin: auto;
    font-size: clamp(16px, 2.2vw, 18px);
    line-height: 1.9;
    color: #e4e9ff;
}

/* ================= JUDUL TERPISAH ================= */
.guru-title-box {
    max-width: 820px;
    width: 92%;
    margin: 0 auto 20px auto;
    padding: 16px 24px;
    background-color: #e93538;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.guru-title-box h2 {
    font-size: 20px;
    font-weight: 700;
    color: #ffffff;
    margin: 0;
}

/* ================= KOTAK GURU ================= */
.guru-section {
    padding: 40px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.guru-card {
    display: flex;
    align-items: flex-start;
    gap: 32px;

    max-width: 820px;
    width: 92%;
    padding: 38px 44px;

    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);

    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.3);
    box-shadow: 0 4px 20px rgba(255,255,255,0.1);
    transition: 0.4s ease;
}

.guru-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.guru-text p {
    display: block;
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 12px;
    color: #f0f0f0;
    text-align: left;
}

.guru-text span {
    font-weight: 600;
    color: #ffffff;
    margin-right: 5px;
}

.guru-photo {
    width: 130px;
    height: 160px;
    border-radius: 14px;
    overflow: hidden;
    border: 2px solid rgba(255,255,255,0.35);
    box-shadow: 0 4px 15px rgba(255,255,255,0.1);
    flex-shrink: 0;
}

.guru-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ================= PETUNJUK PENGGUNAAN ================= */
.petunjuk-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.petunjuk-step {
    display: flex;
    align-items: flex-start;
    gap: 24px;
    max-width: 820px;
    width: 92%;
    padding: 28px 32px;

    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.3);
    box-shadow: 0 4px 20px rgba(255,255,255,0.1);
    transition: 0.4s ease;
}

.petunjuk-step .guru-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.step-number {
    background: #e93538;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.petunjuk-step h3 {
    font-size: 18px;
    margin-bottom: 6px;
}

.petunjuk-step p {
    margin-bottom: 0;
    line-height: 1.6;
}

.screenshot-box {
    width: 180px;
    height: auto;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 12px;
    overflow: hidden;
    flex-shrink: 0;
}

.screenshot-box img {
    width: 100%;
    display: block;
    border-radius: 10px;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .guru-card {
        flex-direction: column-reverse;
        padding: 30px 24px;
    }

    .guru-text p {
        font-size: 15px;
    }

    .guru-photo {
        width: 120px;
        height: 150px;
    }

    .petunjuk-step {
        flex-direction: column;
        align-items: flex-start;
    }

    .screenshot-box {
        width: 100%;
    }
}

/* ================= TOMBOL BELAJAR ================= */
.learn-section {
    margin-top: 30px;
    text-align: center;
}

.learn-button {
    display: inline-block;
    padding: 16px 36px;
    background: linear-gradient(90deg, #e93538, #ff6f61);
    color: #ffffff;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 40px;
    box-shadow: 0 6px 20px rgba(233,53,56,0.4);
    transition: 0.3s ease;
}

.learn-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 28px rgba(233,53,56,0.6);
}

/* ================= KONTAK & MEDIA SOSIAL ================= */
.contact-section {
    margin-top: 30px;
    width: 92%;
    max-width: 820px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 28px;
}

.contact-box {
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(10px);
    padding: 26px 28px;
    border-radius: 18px;
    border: 1px solid rgba(255,255,255,0.3);
    box-shadow: 0 4px 18px rgba(255,255,255,0.08);
}

.contact-box h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 14px;
    color: #ffffff;
}

.contact-box ul {
    list-style: none;
    padding: 0;
}

.contact-box li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 14px;
    line-height: 1.7;
    color: #e6e9ff;
    margin-bottom: 12px;
}

.contact-box .icon {
    font-size: 16px;
    opacity: 0.85;
}

/* ================= MEDIA SOSIAL ================= */
.social-section {
    margin-top: 26px;
    display: flex;
    justify-content: center;
    gap: 18px;
}

.social-icon {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: #ffffff;
    text-decoration: none;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.3);
    transition: 0.3s ease;
}

.social-icon:hover {
    transform: translateY(-4px);
    background: #e93538;
}

/* ================= INFORMASI KONTAK ================= */
.contact-info {
    margin-top: 22px;
    max-width: 820px;
    width: 92%;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
    margin-left: auto;
    margin-right: auto;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: #e6e9ff;
}

.contact-icon {
    font-size: 16px;
    opacity: 0.85;
}

/* ================= FOOTER ================= */
.footer {
    margin-top: 30px;
    padding: 14px 0;
    text-align: center;
    font-size: 13px;
    color: #dcdfff;
    opacity: 0.8;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .contact-info {
        grid-template-columns: 1fr;
        text-align: left;
    }
}



/* ================= FOOTER ================= */
.footer {
    margin-top: 30px;
    padding: 14px 0;
    text-align: center;
    font-size: 13px;
    color: #dcdfff;
    opacity: 0.8;
}


/* ANIMASI SCROLL */
.reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: all 0.9s ease;
}

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