/* =========================================================
   Global Styles & Variables
   ========================================================= */
:root {
    --blue: #012169; /* UK blue */
    --red: #ffc107;
    --red-dark: #ffc107;
    --bg: #f0f2f5;
    --text: #333;
    --muted: #555;
    --light: #e0e0e0;
    --white: #fff;
    --footer-a: #0b2470;
    --footer-b: #3c1361;
    --radius-md: 12px;
    --radius-lg: 14px;
    --shadow-sm: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 6px 18px rgba(0, 33, 105, 0.08);
    --shadow-lg: 0 12px 26px rgba(0, 33, 105, 0.12);
}

/* General */
body {
    margin: 0;
    font-family: "Poppins", sans-serif;
    background: var(--bg);
    color: var(--text);
}

/* =========================================================
   Keyframes (single source of truth)
   ========================================================= */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}
@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}
@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}
@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@keyframes waveMove {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

/* 📱 Mobile responsive */
@media (max-width: 768px) {
    .wave-divider {
        height: 80px; /* lebih pendek di layar kecil */
    }
    .wave-line svg {
        width: 180%; /* jangan terlalu melebar */
        height: 100px; /* lebih kecil */
    }
}

@media (max-width: 480px) {
    .wave-divider {
        height: 60px;
    }
    .wave-line svg {
        width: 150%;
        height: 80px;
    }
}

/* =========================================================
   Hero / Carousel
   ========================================================= */
.hero {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

.carousel {
    position: relative;
    height: 100%;
    width: 100%;
}

.slides {
    display: flex;
    position: relative;
    height: 100%;
    width: 100%;
}

.slide {
    position: absolute;
    inset: 0;
    min-width: 100%;
    height: 100%;
    opacity: 0; 
    pointer-events: none;
    transition: opacity 1.2s ease-in-out;
}

.slide.active {
    opacity: 1;
    pointer-events: auto;
    z-index: 1;
}

.slide img {
    width: 100%;
    height: 100vh;
    object-fit: cover;
    filter: brightness(60%);
    transition: transform 12s ease;
}

.slide.active img {
    transform: scale(1.08);
}

/* Navigation Buttons */
.prev,
.next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.4);
    color: var(--white);
    border: none;
    font-size: 2rem;
    cursor: pointer;
    padding: 12px 18px;
    border-radius: 50%;
    transition: all 0.4s ease;
    opacity: 0;
    z-index: 10;
}
.carousel:hover .prev,
.carousel:hover .next {
    opacity: 1;
}
.prev:hover,
.next:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: translateY(-50%) scale(1.15);
}
.prev {
    left: 30px;
}
.next {
    right: 30px;
}

/* Hero Text */
.hero-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--white);
    opacity: 0;
    animation: fadeIn 1.5s ease 0.8s forwards;
    z-index: 5;
}
.hero-text h1 {
    font-size: 3.5rem;
    margin-bottom: 10px;
    color: var(--white);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7);
    opacity: 0;
    animation: fadeIn 1s ease 1s forwards, slideUp 1s ease 1s forwards;
}
.hero-text h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--white);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7);
    opacity: 0;
    animation: fadeIn 1s ease 1.5s forwards;
}
.hero-text p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 600px;
    margin-inline: auto;
    opacity: 0;
    animation: fadeIn 1s ease 2s forwards;
}

/* CTA */
.cta-button {
    background: var(--red);
    color: var(--white);
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 700;
    transition: background 0.3s ease;
}
.cta-button:hover {
    background: var(--red-dark);
}

/* =========================================================
   About Section
   ========================================================= */
/* ==================== ANIMASI KEYFRAMES ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

/* ==================== ABOUT SECTION ==================== */
.about {
    padding: 90px 20px;
    background: var(--white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.about .container {
    max-width: 1100px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.about h2 {
    font-size: 2.7rem;
    margin-bottom: 20px;
    color: var(--blue);
    font-weight: 700;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.about h2::after {
    content: "";
    display: block;
    width: 80px;
    height: 4px;
    background: var(--red);
    margin: 12px auto 0;
    border-radius: 2px;
    opacity: 0;
    transform: scaleX(0);
    transition: all 0.8s ease 0.3s;
}

.about p {
    font-size: 1.15rem;
    line-height: 1.8;
    color: #444;
    margin-bottom: 25px;
    max-width: 850px;
    margin-inline: auto;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease 0.4s;
}

.about .highlight {
    color: var(--red);
    font-weight: 700;
    position: relative;
}

.about .highlight::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--red);
    transition: width 0.8s ease 1s;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 50px;
}

.about-card {
    background: #fdfdff;
    padding: 35px 25px;
    border-radius: var(--radius-lg);
    border-top: 4px solid var(--blue);
    box-shadow: var(--shadow-md);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

.about-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.about-card h3 {
    font-size: 1.4rem;
    color: var(--blue);
    margin-bottom: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.about-card p {
    font-size: 1rem;
    color: var(--muted);
    margin-bottom: 0;
}

.about-card .icon-wrapper {
    font-size: 2rem;
    color: #ffc107;
    margin-bottom: 1rem;
    transition: all 0.5s ease;
}

/* Hover effects */
.about-card:hover .icon-wrapper {
    color: var(--red);
    animation: pulse 1s ease;
}

.about-card:hover h3 {
    color: var(--red);
}

/* ==================== ANIMASI SAAT SCROLL ==================== */
.about.visible h2 {
    opacity: 1;
    transform: translateY(0);
}

.about.visible h2::after {
    opacity: 1;
    transform: scaleX(1);
}

.about.visible p {
    opacity: 1;
    transform: translateY(0);
}

.about.visible .highlight::after {
    width: 100%;
}

.about.visible .about-card {
    opacity: 1;
    transform: translateY(0);
}

/* Delay untuk about cards */
.about.visible .about-card:nth-child(1) {
    transition-delay: 0.5s;
}
.about.visible .about-card:nth-child(2) {
    transition-delay: 0.7s;
}
.about.visible .about-card:nth-child(3) {
    transition-delay: 0.9s;
}

/* Responsive design */
@media (max-width: 768px) {
    .about h2 {
        font-size: 2.2rem;
    }

    .about p {
        font-size: 1rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .about-card {
        padding: 25px 20px;
    }
}

/* Awal, sebelum muncul */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.7s ease-out;
}

/* Ketika muncul di viewport */
.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

.alur {
    background: #1d3fa3;
    position: relative;
    color: white;
    padding: 80px 20px;
    overflow: hidden;
}

.alur .container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.alur h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--white);
    text-align: center;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.alur p {
    font-size: 1.1rem;
    margin-bottom: 60px;
    color: var(--light);
    text-align: center;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease 0.2s;
}

/* Garis penghubung timeline */
.alur-timeline::before {
    content: "";
    position: absolute;
    top: 15%;
    left: 50%;
    transform: translateX(-50%);
    width: 85%;
    height: 3px;
    background: rgba(255, 255, 255, 0.3);
    z-index: 0;
}

.alur-timeline {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    position: relative;
}

.step {
    position: relative;
    text-align: center;
    flex: 1;
    min-width: 180px;
    max-width: 220px;
    margin: 0 10px;
    z-index: 1;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

.circle {
    width: 70px;
    height: 70px;
    margin: 0 auto 15px;
    border-radius: 50%;
    background: var(--red);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    border: 3px solid var(--white);
    transition: all 0.5s ease;
}

.step h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--white);
    transition: all 0.5s ease 0.1s;
}

.step p {
    font-size: 0.9rem;
    color: var(--light);
    line-height: 1.5;
    transition: all 0.5s ease 0.2s;
}

/* Hover effects */
.step:hover .circle {
    background: #1d3fa3;
    transform: scale(1.1) rotate(5deg);
    animation: pulse 1s ease infinite;
}

.step:hover h3 {
    color: #ffc107;
}

.step:hover p {
    color: #ffffff;
}

/* ==================== ANIMASI SAAT SCROLL ==================== */
.alur.visible h2 {
    opacity: 1;
    transform: translateY(0);
}

.alur.visible p {
    opacity: 1;
    transform: translateY(0);
}

.alur.visible .step {
    opacity: 1;
    transform: translateY(0);
}

/* Delay untuk steps */
.alur.visible .step:nth-child(1) {
    transition-delay: 0.3s;
}
.alur.visible .step:nth-child(2) {
    transition-delay: 0.4s;
}
.alur.visible .step:nth-child(3) {
    transition-delay: 0.5s;
}
.alur.visible .step:nth-child(4) {
    transition-delay: 0.6s;
}
.alur.visible .step:nth-child(5) {
    transition-delay: 0.7s;
}
.alur.visible .step:nth-child(6) {
    transition-delay: 0.8s;
}

/* Responsive design */
@media (max-width: 768px) {
    .alur-timeline::before {
        display: none;
    }

    .alur-timeline {
        flex-direction: column;
        align-items: center;
    }

    .step {
        margin-bottom: 30px;
        max-width: 100%;
    }
}

/* Wave Divider / Line */
.wave-divider {
    width: 100%;
    height: 150px;
    overflow: hidden;
    line-height: 0;
    background: var(--white);
    margin: -1px 0;
}
.wave-divider svg {
    display: block;
    width: 100%;
    height: 100%;
}
.wave-divider .shape-fill {
    fill: var(--blue);
}

.wave-line {
    position: relative;
    width: 100%;
    overflow: hidden;
    line-height: 0;
}
.wave-line svg {
    display: block;
    width: 250%;
    height: 180px;
    animation: waveMove 6s linear infinite;
}

/* =========================================================
   Program Section
   ========================================================= */
.program-section {
    background: var(--bg);
    padding: 60px 20px;
    text-align: center;
}
.section-title,
.section-subtitle,
.filter-buttons-wrapper,
.filter-btn,
.program-item {
    opacity: 0;
    transform: translateY(30px);
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--blue);
    margin-bottom: 10px;
    transition: all 0.8s ease;
}
.section-subtitle {
    font-size: 1.1rem;
    margin-bottom: 40px;
    color: var(--text);
    transition: all 0.8s ease 0.2s;
}

.filter-buttons-wrapper {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
    transition: all 0.8s ease 0.4s;
}
.filter-btn {
    padding: 8px 20px;
    margin: 0 0.5rem;
    border: 2px solid var(--blue);
    background: var(--white);
    color: var(--blue);
    font-weight: 600;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.filter-btn:hover:not(.active) {
    background: #f8f9fa;
}
.filter-btn.active {
    background: var(--blue);
    color: var(--white);
}

.program-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    justify-content: center;
}
.program-item {
    transition: all 0.8s ease;
    transform: translateY(50px);
}

/* Card */
.program-card {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    border: 1px solid #e0e0e0;
}
.program-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 16px rgba(0, 33, 105, 0.15);
}
.program-card-image-wrapper {
    position: relative;
    height: 180px;
    overflow: hidden;
}
.program-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.program-card:hover .program-card-img {
    transform: scale(1.05);
}
.program-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 0.8rem;
}
.card-body {
    padding: 1.5rem;
    flex-grow: 1;
}
.program-card-title {
    color: var(--blue);
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
    font-weight: 700;
}
.program-card p {
    font-size: 0.95rem;
    color: var(--muted);
    padding-bottom: 0.5rem;
}
.program-card-price {
    color: var(--red);
    font-weight: 700;
    font-size: 1.1rem;
}

.program-btn {
    display: inline-block;
    margin: 10px 0 20px;
    padding: 8px 16px;
    background: var(--red);
    color: var(--white);
    font-weight: 700;
    border-radius: 6px;
    text-decoration: none;
    transition: background 0.3s ease, transform 0.3s ease;
}
.program-btn:hover {
    background: var(--red-dark);
    transform: translateY(-2px);
}

/* Scroll-in Animations */
.program-section.visible .section-title,
.program-section.visible .section-subtitle,
.program-section.visible .filter-buttons-wrapper,
.program-section.visible .filter-btn,
.program-section.visible .program-item {
    opacity: 1;
    transform: translateY(0);
}

/* Delays */
.program-section.visible .filter-btn:nth-child(1) {
    transition-delay: 0.5s;
}
.program-section.visible .filter-btn:nth-child(2) {
    transition-delay: 0.6s;
}

.program-section.visible .program-item:nth-child(1) {
    transition-delay: 0.3s;
}
.program-section.visible .program-item:nth-child(2) {
    transition-delay: 0.4s;
}
.program-section.visible .program-item:nth-child(3) {
    transition-delay: 0.5s;
}
.program-section.visible .program-item:nth-child(4) {
    transition-delay: 0.6s;
}
.program-section.visible .program-item:nth-child(5) {
    transition-delay: 0.7s;
}
.program-section.visible .program-item:nth-child(6) {
    transition-delay: 0.8s;
}
.program-section.visible .program-item:nth-child(7) {
    transition-delay: 0.9s;
}
.program-section.visible .program-item:nth-child(8) {
    transition-delay: 1s;
}

/* =========================================================
   Footer
   ========================================================= */
.footer {
    background: linear-gradient(105deg, var(--footer-a), var(--footer-b));
    color: #f1f1f1;
    font-size: 12px;
    font-weight: 100;
    text-align: center;
    padding: 20px 0;
    margin-top: -1px;
}

/* =========================================================
   Utility / Overrides (Bootstrap-like buttons)
   ========================================================= */
.btn-primary {
    background: var(--blue);
    border-color: var(--blue);
}
.btn-danger {
    background: var(--red);
    border-color: var(--red);
}
.btn-primary:hover {
    background: #00114d;
    border-color: #00114d;
}
.btn-danger:hover {
    background: #a50e26;
    border-color: #a50e26;
}

/* =========================================================
   Responsiveness
   ========================================================= */
@media (max-width: 768px) {
    .hero-text h1 {
        font-size: 2.4rem;
    }
    .hero-text h2 {
        font-size: 1.4rem;
    }
    .circle {
        width: 56px;
        height: 56px;
        font-size: 1.2rem;
    }
    .alur-timeline::before {
        top: 28px;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

.footer {
    background: linear-gradient(105deg, #0b2470, #3c1361);
    /* coklat tua → coklat sedang → coklat pasir */
    color: #f1f1f1;
    font-size: 12px;
    font-weight: 100;
    text-align: center;
    padding: 20px 0;
    margin-top: -1px;
}

/* About Section */
.about {
    background: #ffff;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.about-card {
    background: #fff;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.about-card:hover {
    transform: translateY(-5px);
}

.about-card .icon-wrapper {
    font-size: 2rem;
    color: #ffc107;
    margin-bottom: 1rem;
}

.about .highlight {
    color: #012169;
    font-weight: bold;
}

/* Filter Button Styles */
.filter-buttons-wrapper {
    margin-bottom: 2rem;
}

.filter-btn {
    padding: 0.5rem 1.5rem;
    margin: 0 0.5rem;
    border: 2px solid #012169;
    background-color: white;
    color: #012169;
    font-weight: 600;
    border-radius: 30px;
    transition: all 0.3s ease;
}

.filter-btn.active {
    background-color: #012169;
    color: white;
}

.filter-btn:hover:not(.active) {
    background-color: #f0f0f0;
}

/* Program Grid Layout */
.program-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    justify-content: center;
}

/* Program Card Styles with UK Flag Colors */
.program-card {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    background: white;
    border: 1px solid #e0e0e0;
}

.program-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.program-card-image-wrapper {
    position: relative;
    height: 180px;
    overflow: hidden;
}

.program-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.program-card:hover .program-card-img {
    transform: scale(1.05);
}

.program-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 0.8rem;
}

.card-body {
    padding: 1.5rem;
    flex-grow: 1;
}

.program-card-title {
    color: #012169;
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.program-card-price {
    color: #c8102e;
    font-weight: bold;
    font-size: 1.1rem;
}

/* Button Colors */
.btn-primary {
    background-color: #012169;
    border-color: #012169;
}

.btn-danger {
    background-color: #c8102e;
    border-color: #c8102e;
}

.btn-primary:hover {
    background-color: #00114d;
    border-color: #00114d;
}

.btn-danger:hover {
    background-color: #a50e26;
    border-color: #a50e26;
}

.hr-half {
    width: 50%; /* setengah */
    border: 0; /* hapus border default */
    border-top: 2px solid #ccc; /* garis custom */
}