body {
    margin: 0;
    padding: 0;
    min-height: 100vh;

    /* Varian 1 - Purple Pink Blue (Default) */
    /* background: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #4facfe 75%, #00f2fe 100%); */

    /* Varian 2 - Sunset Orange Pink (Uncomment untuk pakai) */
    /* background: linear-gradient(135deg, #ff6b6b 0%, #feca57 25%, #ff9ff3 50%, #54a0ff 75%, #48dbfb 100%); */

    /* Varian 3 - Fresh Green Yellow (Uncomment untuk pakai) */
    /* background: linear-gradient(135deg, #a8e063 0%, #56ab2f 25%, #fddb92 50%, #f9ca24 75%, #f0932b 100%); */

    /* Varian 4 - Candy Sweet (Uncomment untuk pakai) */
    background: linear-gradient(
        135deg,
        #f3afc3 0%,
        #ff6b6b 25%,
        #30cfd0 50%,
        #a890fe 75%,
        #ff6ac3 100%
    );

    /* Varian 5 - Ocean Blue Aqua (Uncomment untuk pakai) */
    /* background: linear-gradient(135deg, #4facfe 0%, #00f2fe 25%, #43e97b 50%, #38f9d7 75%, #667eea 100%); */

    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    position: relative;
    overflow-x: hidden;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* Decorative shapes */
.shape {
    position: absolute;
    opacity: 0.2;
    animation: float 6s ease-in-out infinite;
    z-index: 1;
}

.circle {
    width: 100px;
    height: 100px;
    background: #fff;
    border-radius: 50%;
    top: 10%;
    left: 10%;
}

.square {
    width: 80px;
    height: 80px;
    background: #ffeb3b;
    border-radius: 15px;
    top: 70%;
    right: 15%;
    animation-delay: 2s;
}

.triangle {
    width: 0;
    height: 0;
    border-left: 50px solid transparent;
    border-right: 50px solid transparent;
    border-bottom: 87px solid #4caf50;
    top: 30%;
    right: 20%;
    animation-delay: 1s;
}

.star {
    width: 0;
    height: 0;
    border-left: 40px solid transparent;
    border-right: 40px solid transparent;
    border-bottom: 70px solid #ff9800;
    position: absolute;
    top: 60%;
    left: 20%;
    animation-delay: 3s;
}

@keyframes float {
    0%,
    100% {
        transform: translateY(0px) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(10deg);
    }
}

/* Clouds */
.cloud {
    position: absolute;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 100px;
    animation: drift 20s linear infinite;
    z-index: 1;
}

.cloud1 {
    width: 150px;
    height: 60px;
    top: 15%;
    left: -150px;
}

.cloud2 {
    width: 120px;
    height: 50px;
    top: 40%;
    left: -120px;
    animation-delay: 7s;
}

.cloud3 {
    width: 180px;
    height: 70px;
    top: 75%;
    left: -180px;
    animation-delay: 14s;
}

@keyframes drift {
    0% {
        left: -200px;
    }

    100% {
        left: 110%;
    }
}

/* Container */
.main-container {
    position: relative;
    z-index: 10;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Section - Minimalist */
.header-section {
    padding: 30px 20px 20px;
    text-align: center;
}

.header-title {
    font-size: 5rem;
    font-weight: 700;
    color: #fff;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.2);
    margin-bottom: 8px;
    animation: fadeInDown 0.8s ease;
    font-family: "Fredoka", sans-serif;
    letter-spacing: 10px;
}

span.subtitle {
    font-size: 2rem;
    color: rgba(255, 255, 255, 0.95);
    animation: fadeInUp 0.8s ease 0.2s backwards;
    font-family: "Bubblegum Sans", cursive;
    margin-bottom: 0;
    /* box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25); */
    /* background: rgba(255, 255, 255, 0.3); */
    padding: 10px 20px;
    border-radius: 2rem;
}

@keyframes fadeInDown {
    0% {
        transform: translateY(-20px);
        opacity: 0;
    }

    100% {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes fadeInUp {
    0% {
        transform: translateY(20px);
        opacity: 0;
    }

    100% {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Content Section */
.content-wrapper {
    flex: 1;
    display: flex;
    /* align-items: center; */
    justify-content: center;
    padding: 20px;
}

.content-box {
    max-width: 1000px;
    width: 100%;
}

/* Main Buttons - Clean & Bold */
.main-buttons {
    margin-bottom: 40px;
    margin-top: 100px;
    width: 700px !important;
}

.btn-main {
    /* flex: 1; */
    /* display: flex; */

    height: 300px;
    min-width: 250px;
    font-family: "Fredoka", sans-serif;
    font-size: 1.4rem;
    padding: 15px 30px;
    border: none;
    border-radius: 20px;
    font-weight: 700;
    transition: all 0.3s ease;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-tk {
    background: linear-gradient(135deg, #13ec6e, #0b8b40);
    /* color: #f5576c; */
}

.btn-bimbel {
    background: linear-gradient(135deg, #f43e7b, #f88cb0);
    /* color: #4facfe; */
}

.btn-main:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.35);
}

/* Navigation Menu - Simple Pills */
.nav-menu {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-bottom: 35px;
    flex-wrap: wrap;
}

.nav-item {
    font-family: "Bubblegum Sans", cursive;
    font-size: 1.4rem;
    color: white;
    text-decoration: none;
    padding: 18px 30px;
    background: rgba(255, 255, 255, 0.25);
    border-radius: 50px;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.4);
    transform: scale(1.05);
    color: white;
}

/* Social Media - Minimal Icons */
.social-wrapper {
    text-align: center;
}

.social-label {
    font-family: "Fredoka", sans-serif;
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.social-icons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.social-btn {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    color: white;
    font-size: 2rem;
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.social-btn:hover {
    transform: scale(1.15);
    background: rgba(255, 255, 255, 0.45);
    color: white;
}

.transparent-box {
    background: rgba(255, 255, 255, 0.4);
    padding: 30px;
    border-radius: 20px;
    color: #3e3e3e;
    font-size: 1.1rem;
    text-align: justify;
}

.nav-item.selected {
    background: linear-gradient(135deg, #0f9d58, #0b7e3b);
    /* hijau lebih hidup */
    box-shadow: 0 4px 10px rgba(0, 128, 64, 0.3);
}

span.title-bimbel {
    animation: fadeInUp 0.8s ease 0.2s backwards;
    font-family: "Bubblegum Sans", cursive;
    font-size: 1.5rem;
    letter-spacing: 2px;
    color: #fff;
}

.btn-home {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background-color: #007bff;
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    z-index: 9999;
}

.btn-home:hover {
    background-color: #0056b3;
    transform: scale(1.1);
}
.swiper {
    width: 100%;
    height: 350px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.35);
    /* bisa diganti sesuai kebutuhan */
}

/* Set gambar supaya rapi & tidak melar */
.swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* menjaga proporsi gambar */
    border-radius: 10px;
}

/* Pagination & navigation custom style (opsional) */
.swiper-pagination-bullet {
    background: #7b2cbf;
    /* ungu elegan */
    opacity: 0.7;
}

.swiper-pagination-bullet-active {
    background: #5a189a;
}

.swiper-button-next,
.swiper-button-prev {
    color: #7b2cbf;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    justify-content: center;
}

.gallery a {
    display: block;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.gallery a:hover {
    transform: scale(1.05);
}

.gallery img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}
.header-title-2 {
    font-size: 4rem;
    font-weight: 700;
    color: #fff;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.2);
    margin-bottom: 8px;
    animation: fadeInDown 0.8s ease;
    font-family: "Fredoka", sans-serif;
    letter-spacing: 1px;
}

.subtitle-2 {
    font-size: 1.7rem;
    color: rgba(255, 255, 255, 0.95);
    animation: fadeInUp 0.8s ease 0.2s backwards;
    font-family: "Bubblegum Sans", cursive;
    margin-bottom: 0;
}
/* Responsive */
@media (max-width: 768px) {
    h1.header-title,
    h1.header-title-2 {
        font-size: 1.8rem;
        letter-spacing: 2px;
    }

    span.subtitle,
    span.subtitle-2 {
        font-size: 1.2rem;
        letter-spacing: 1px;
        text-align: center;
    }

    .btn-main {
        font-size: 1.2rem;

        min-width: 100%;
    }

    .nav-item {
        font-size: 1rem;
        padding: 10px 20px;
    }

    .social-btn {
        width: 50px;
        height: 50px;
        font-size: 1.4rem;
    }
    h2 {
        font-size: 1.2rem;
    }

    h4 {
        font-size: 0.9rem;
    }

    p,
    td {
        font-size: 0.7rem;
    }

    .transparent-box {
        border-radius: 10px;
    }

    span.title-bimbel {
        font-size: 1rem;
        letter-spacing: 1px;
    }
    button.btn-main {
        height: 150px;
    }
    .swiper {
        height: 200px;
    }
}