:root {

    --accent-cyan: #00FFFF;
    --accent-magenta: #F000B8;
    --dark-bg: #0A0A1A;

    --light-text: #E0E0E0;
    --bright-text: #FFFFFF;
    --border-color: rgba(0, 255, 255, 0.2);
    --glass-bg: rgba(20, 20, 35, 0.5);
    --border-radius: 12px;

    --font-primary: 'Poppins', sans-serif;
    --font-code: 'Fira Code', monospace;

    --accent-gradient: linear-gradient(45deg, var(--accent-cyan), var(--accent-magenta));
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--light-text);
    background-color: var(--dark-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    cursor: default;
}

#cursor-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 255, 255, 0.1), transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    transition: left 0.1s ease-out, top 0.1s ease-out;
    z-index: -1;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

section {
    padding: 7rem 0;
    position: relative;
}

.text-gradient {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

header {
    background: rgba(10, 10, 26, 0.7);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-family: var(--font-code);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--bright-text);
    text-decoration: none;
    text-shadow: 0 0 5px var(--accent-cyan);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

nav ul a {
    text-decoration: none;
    color: var(--light-text);
    font-family: var(--font-code);
    font-weight: 500;
    transition: all 0.3s;
}

nav ul a:hover {
    color: var(--accent-cyan);
    text-shadow: 0 0 8px var(--accent-cyan);
}

.btn {
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    transition: all 0.3s ease;
    border: 2px solid var(--accent-cyan);
    font-family: var(--font-code);
}

.btn-lg {
    padding: 1rem 2.5rem;
}

.btn-block {
    display: block;
    text-align: center;
    width: 100%;
}

.btn-primary {
    background-color: var(--accent-cyan);
    color: var(--dark-bg);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 0 25px rgba(0, 255, 255, 0.7);
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent-cyan);
}

.btn-secondary:hover {
    background-color: var(--accent-cyan);
    color: var(--dark-bg);
}

#hero {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 95vh;
    padding: 6rem 0;
}

.hero-headline {
    font-size: clamp(3rem, 7vw, 5.5rem);
    font-weight: 800;
    line-height: 1.1;
    color: var(--bright-text);
    margin-bottom: 1.5rem;
    text-shadow: 0 0 20px rgba(0, 255, 255, 0.3);
}

.hero-subheadline {
    font-size: 1.25rem;
    max-width: 750px;
    margin: 0 auto 3rem;
    color: var(--light-text);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.bento-item {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.bento-item:hover {
    transform: translateY(-5px);
    border-color: var(--accent-cyan);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
}

.bento-item h3 {
    font-family: var(--font-code);
    font-size: 1.25rem;
    color: var(--accent-cyan);
    margin-bottom: 1rem;
}

.item-1 {
    grid-column: span 2;
}

.item-3 {
    grid-column: span 2;
}

.instructor-container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    align-items: center;
    gap: 5rem;
}

.instructor-photo img {
    width: 100%;
    border-radius: var(--border-radius);
    box-shadow: 0 0 30px rgba(240, 0, 184, 0.3);
    border: 1px solid var(--accent-magenta);
}

.instructor-bio h2 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    color: var(--bright-text);
    text-align: left;
}

.eyebrow-text {
    color: var(--accent-magenta);
}

.tech-stack-p {
    font-family: var(--font-code);
    font-size: 0.9rem;
    background: var(--glass-bg);
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-top: 1.5rem;
    display: inline-block;
    border: 1px solid rgba(240, 0, 184, 0.3);
}

.section-header h2 {
    color: var(--bright-text);
}

.section-subtitle {
    color: var(--light-text);
}

.timeline-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    position: relative;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 1rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, transparent, var(--accent-cyan), transparent);
}

.timeline-item {
    background: var(--glass-bg);
    padding: 1.5rem 1.5rem 1.5rem 3rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    position: relative;
    transition: all 0.3s ease;
}

.timeline-item:hover {
    border-color: var(--accent-magenta);
    transform: translateX(10px);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(1rem - 6px);
    top: 28px;
    width: 14px;
    height: 14px;
    background: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-cyan);
}

.timeline-phase {
    font-family: var(--font-code);
    color: var(--bright-text);
    font-weight: 500;
    display: block;
}

.pricing-card {
    max-width: 500px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(20, 20, 35, 0.5), rgba(20, 20, 35, 0.2));
    backdrop-filter: blur(15px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    text-align: center;
    padding: 2.5rem;
}

.pricing-card h3 {
    font-family: var(--font-code);
    font-size: 1.2rem;
    color: var(--accent-cyan);
    text-transform: uppercase;
}

.price {
    font-size: 4rem;
    font-weight: 800;
    color: var(--bright-text);
    margin: 1rem 0;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

.price-term {
    font-size: 1rem;
    font-weight: 600;
    color: var(--light-text);
}

.features-list {
    list-style: none;
    margin: 2rem 0;
    text-align: left;
}

.features-list li {
    margin-bottom: 1rem;
}

.features-list li::before {
    content: '>>';
    color: var(--accent-cyan);
    margin-right: 0.75rem;
    font-family: var(--font-code);
}

footer {
    border-top: 1px solid var(--border-color);
    padding: 6rem 0;
}

.footer-content h2 {
    color: var(--bright-text);
    font-size: 2.5rem;
}

.contact-info a {
    color: var(--accent-cyan);
    text-decoration: none;
    font-weight: 600;
}

.contact-info a:hover {
    text-decoration: underline;
    text-shadow: 0 0 5px var(--accent-cyan);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 4rem;
    padding-top: 2rem;
    font-size: 0.9rem;
    color: #666;
    font-family: var(--font-code);
}

@media (max-width: 992px) {
    .bento-grid {
        grid-template-columns: 1fr;
    }

    .item-1,
    .item-3 {
        grid-column: span 1;
    }

    .instructor-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .instructor-photo {
        grid-row: 1;
        margin-bottom: 2rem;
    }

    .instructor-bio h2 {
        text-align: center;
    }
}

@media (max-width: 768px) {
    nav ul {
        display: none;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .btn-lg {
        width: 80%;
        text-align: center;
    }

    .timeline-container::before {
        left: 0.5rem;
    }

    .timeline-item {
        padding-left: 2rem;
    }

    .timeline-item::before {
        left: calc(0.5rem - 6px);
    }
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    align-items: center;
}

.pricing-card {
    margin: 0;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.pricing-card .features-list {
    flex-grow: 1;
}

.pricing-card.featured {
    transform: scale(1.05);
    border-color: var(--accent-magenta);
    position: relative;
    overflow: hidden;
}

.popular-banner {
    position: absolute;
    top: 25px;
    right: -55px;
    background: var(--accent-magenta);
    color: var(--bright-text);
    font-family: var(--font-code);
    padding: 0.5rem 3rem;
    transform: rotate(45deg);
    font-size: 0.9rem;
    box-shadow: 0 0 15px rgba(240, 0, 184, 0.5);
}

@media (max-width: 992px) {
    .pricing-card.featured {
        transform: scale(1);
    }
}

#faq {
    border-top: 1px solid var(--border-color);
}

.faq-container {

    max-width: 960px;
    margin: 0 auto;
}

.faq-item {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: var(--accent-cyan);
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--bright-text);
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question::-webkit-details-marker {
    display: none;
}

.faq-icon {
    position: relative;
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-icon::before,
.faq-icon::after {
    content: '';
    position: absolute;
    background-color: var(--accent-cyan);
    transition: all 0.3s ease;
}

.faq-icon::before {
    left: 0;
    top: 50%;
    width: 100%;
    height: 2px;
    transform: translateY(-50%);
}

.faq-icon::after {
    left: 50%;
    top: 0;
    width: 2px;
    height: 100%;
    transform: translateX(-50%);
}

details[open] .faq-icon {
    transform: rotate(180deg);
}

details[open] .faq-icon::after {
    transform: translateX(-50%) scaleY(0);
}

.faq-answer {

    padding: 0 1.5rem 1.5rem 1.5rem;
    color: var(--light-text);
    border-top: 1px solid var(--border-color);

    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

details[open]>.faq-answer {

    animation-name: fadeIn;
}

#prestasi {

    border-top: 1px solid var(--border-color);
}

.prestasi-grid {
    display: grid;

    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.prestasi-item {
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    transition: all 0.3s ease;
}

.prestasi-item:hover {
    transform: translateY(-10px);
    border-color: var(--accent-magenta);
    box-shadow: 0 0 25px rgba(240, 0, 184, 0.3);
}

.prestasi-item img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
}

@media (max-width: 992px) {
    .prestasi-grid {

        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .prestasi-grid {

        grid-template-columns: 1fr;
    }
}

.footer-contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 1rem;
    text-align: center;
}

.contact-info a {
    color: var(--accent-cyan);
    text-decoration: none;
    font-weight: 600;
}

.contact-info a:hover {
    text-decoration: underline;
    text-shadow: 0 0 5px var(--accent-cyan);
}

.footer-socials {
    margin-top: 3rem;
    text-align: center;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    color: var(--light-text);
    text-decoration: none;
    font-family: var(--font-code);
    font-weight: 500;
    transition: all 0.3s ease;
}

.social-link i {
    font-size: 1.2rem;
    vertical-align: middle;
}

.social-link:hover {
    border-color: var(--accent-cyan);
    color: var(--bright-text);
    background: rgba(0, 255, 255, 0.1);
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.2);
    transform: translateY(-3px);
}