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

:root {
    --primary: #0a1931; /* Dark blue from poster */
    --secondary: #1e40af; /* Medium blue */
    --accent: #0066cc; /* Blue accent */
    --light: #f8fafc;
    --dark: #0f172a;
    --success: #10b981;
    --error: #ef4444; /* Variabel warna baru untuk error */
    --gradient-start: #0a1931;
    --gradient-end: #1e40af;
    --highlight: #0066cc;
    --text-light: #ffffff;
    --text-dark: #0f172a;
    --bg-light: #f1f5f9;
    --bg-gradient: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));

    /* Font Families */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-light);
    color: var(--text-dark);
    overflow-x: hidden;
    font-family: var(--font-body); /* Font body default */
}

h1, h2, h3, h4, h5, h6, .logo {
    font-family: var(--font-heading); /* Font heading default */
    font-weight: 700;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header Styles */
header {
    background: var(--bg-gradient);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i {
    color: var(--highlight);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    font-family: var(--font-body);
}

nav a:hover, nav a.active {
    background-color: rgba(255,255,255,0.1);
    color: #fff;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: var(--bg-gradient);
    color: white;
    padding: 8rem 0 6rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 70vh;
    display: flex;
    align-items: center;
}

/* Animasi baru untuk gelembung */
@keyframes pulse-bubble {
    0%, 100% { transform: scale(1); opacity: 0.1; }
    50% { transform: scale(1.1); opacity: 0.15; }
}

.hero::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    background: rgba(0, 102, 204, 0.1);
    border-radius: 50%;
    z-index: 0;
    animation: pulse-bubble 5s infinite ease-in-out; /* Animasi ditambahkan */
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 300px;
    height: 300px;
    background: rgba(0, 102, 204, 0.1);
    border-radius: 50%;
    z-index: 0;
    animation: pulse-bubble 5s infinite ease-in-out; /* Animasi ditambahkan */
    animation-delay: 2.5s; /* Delay agar tidak bersamaan */
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
    font-weight: 800;
    line-height: 1.2;
}

.hero p {
    font-size: 1.5rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    line-height: 1.6;
    font-weight: 400;
}

.btn {
    display: inline-block;
    background-color: var(--highlight);
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    font-family: var(--font-body);
}

.btn:hover {
    background-color: #0052a3;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.btn-primary {
    background-color: var(--highlight);
}

.btn-primary:hover {
    background-color: #0052a3;
}

/* Features Section */
.features {
    padding: 5rem 0;
    background-color: white;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.2rem;
    color: var(--primary);
    margin-bottom: 1rem;
    font-weight: 800;
}

.section-title p {
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 1.6;
}

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

.feature-card {
    background: white;
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid #e2e8f0;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background-color: var(--bg-light);
    color: var(--primary);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    /* Transisi diperbarui untuk menyertakan transform */
    transition: all 0.3s ease-in-out, transform 0.2s ease;
}

.feature-card:hover .feature-icon {
    background-color: var(--primary);
    color: white;
    /* Animasi "pop" ditambahkan */
    transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--dark);
    font-weight: 700;
}

.feature-card p {
    color: #64748b;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Theme Section (Posisi Baru) */
.theme-section {
    background: var(--bg-gradient);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.theme-section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    font-weight: 800;
}

.theme-section p {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
    opacity: 0.9;
    font-weight: 400;
}

/* Registration Section */
.registration {
    padding: 5rem 0;
    background: var(--bg-light);
}

.form-container {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    border: 1px solid #e2e8f0;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.9rem;
    border: 1px solid #cbd5e1;
    border-radius: 5px;
    font-size: 1rem;
    font-family: var(--font-body);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(10, 25, 49, 0.1);
}

.file-upload {
    border: 2px dashed #cbd5e1;
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
}

.file-upload:hover {
    border-color: var(--primary);
    background-color: rgba(10, 25, 49, 0.02);
}

.file-upload i {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
    display: block;
}

.file-upload p {
    color: #64748b;
    margin: 0.5rem 0;
}

.file-upload input[type="file"] {
    display: none;
}

/* Footer */
footer {
    background-color: var(--primary);
    color: white;
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--light);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-section i{
    color: #e2e8f0;
}
.footer-section p, .footer-section a {
    color: #cbd5e1;
    margin-bottom: 0.5rem;
    display: block;
    text-decoration: none;
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-section a:hover {
    color: white;
    text-decoration: underline;
}

.copyright {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid #334155;
    color: #94a3b8;
    font-size: 0.9rem;
}

.copyright a {
    color: var(--highlight);
    text-decoration: none;
}
.copyright a:hover {
    text-decoration: underline;
}

/* Additional styling for poster-inspired elements */
.poster-highlight {
    background: linear-gradient(135deg, var(--highlight), #0052a3);
    color: white;
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
    text-align: center;
    font-weight: bold;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.poster-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--highlight);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-weight: 600;
    margin: 0.5rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* Success Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease-in-out;
}

.modal.show {
    display: flex;
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    max-width: 400px;
    width: 90%;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    position: relative;
}

.modal-content h2 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--success);
    margin-bottom: 1rem;
}

.modal-content p {
    margin-bottom: 1.5rem;
    color: #334155;
    line-height: 1.6;
}

.modal-content .btn {
    background-color: var(--success);
}
.modal-content .btn:hover {
    background-color: #0d9473;
}

.close-btn {
    position: absolute;
    top: 0.8rem;
    right: 0.8rem;
    background: none;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: #94a3b8;
    transition: color 0.3s;
}

.close-btn:hover {
    color: var(--dark);
}

/* == GAYA BARU UNTUK NOTIFICATION TOAST == */
#notificationToast {
    position: fixed;
    bottom: -100px; /* Mulai dari luar layar */
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--dark);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
    z-index: 2000;
    transition: bottom 0.5s ease-in-out;
    font-family: var(--font-body);
    font-size: 0.95rem;
}

#notificationToast.show {
    bottom: 20px; /* Muncul ke layar */
}

#notificationToast.error {
    background-color: var(--error); /* Merah untuk error */
}

/* ======================================= */
/* == ANIMASI SCROLL (BARU DITAMBAHKAN) == */
/* ======================================= */

/* Awal: Sembunyikan elemen */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    will-change: opacity, transform; /* Optimasi performa */
}

/* Akhir: Tampilkan elemen saat kelas 'visible' ditambahkan */
.reveal-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Menambahkan penundaan (delay) agar animasi tidak bersamaan */
.hero-content h1.reveal-on-scroll { transition-delay: 0.1s; }
.hero-content p.reveal-on-scroll { transition-delay: 0.2s; }
.hero-content .btn.reveal-on-scroll { transition-delay: 0.3s; }

.section-title h2.reveal-on-scroll { transition-delay: 0.1s; }
.section-title p.reveal-on-scroll { transition-delay: 0.2s; }

/* Delay bertingkat (staggered) untuk kartu */
.features-grid .feature-card.reveal-on-scroll:nth-child(1) { transition-delay: 0.1s; }
.features-grid .feature-card.reveal-on-scroll:nth-child(2) { transition-delay: 0.2s; }
.features-grid .feature-card.reveal-on-scroll:nth-child(3) { transition-delay: 0.3s; }

.poster-highlight.reveal-on-scroll { transition-delay: 0.1s; }
.poster-badge.reveal-on-scroll { transition-delay: 0.2s; }

.theme-section h2.reveal-on-scroll { transition-delay: 0.1s; }
.theme-section p.reveal-on-scroll { transition-delay: 0.2s; }

/* Delay bertingkat (staggered) untuk footer */
.footer-content .footer-section.reveal-on-scroll:nth-child(1) { transition-delay: 0.1s; }
.footer-content .footer-section.reveal-on-scroll:nth-child(2) { transition-delay: 0.2s; }
.footer-content .footer-section.reveal-on-scroll:nth-child(3) { transition-delay: 0.3s; }


/* Responsive Design */
@media (max-width: 992px) {
    .hero {
        padding: 6rem 0 4rem 0;
    }
    .hero h1 {
        font-size: 2.8rem;
    }
    .hero p {
        font-size: 1.3rem;
    }
    .section-title h2 {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: row;
        justify-content: space-between;
    }

    nav ul {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--secondary);
        flex-direction: column;
        padding: 1rem 0;
        gap: 0;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    }

    nav ul.show {
        display: flex;
    }

    nav ul li {
        width: 100%;
    }

    nav ul li a {
        display: block;
        padding: 1rem;
        text-align: center;
    }
    nav ul li a:hover {
        background-color: var(--primary);
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero {
        padding: 4rem 0 3rem 0;
        min-height: 50vh;
    }
    .hero h1 {
        font-size: 2.2rem;
    }
    .hero p {
        font-size: 1.1rem;
    }

    .features, .registration {
        padding: 3rem 0;
    }
    .theme-section {
        padding: 3rem 0;
    }

    .section-title h2 {
        font-size: 1.8rem;
    }

    .btn {
        padding: 0.8rem 2rem;
        font-size: 1rem;
    }

    .form-container {
        padding: 1.5rem;
    }

    /* Pada mobile, hilangkan delay agar cepat terlihat */
    .reveal-on-scroll {
        transition-delay: 0s !important;
    }

    #notificationToast {
        width: 90%;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 3rem 0 2rem 0;
    }
    .hero h1 {
        font-size: 2rem;
    }
    .hero p {
        font-size: 1rem;
    }

    .section-title h2 {
        font-size: 1.7rem;
    }

    .feature-card {
        padding: 1.5rem;
    }
    .feature-icon {
        width: 60px;
        height: 60px;
        font-size: 2rem;
    }
    .feature-card h3 {
        font-size: 1.2rem;
    }

    .form-container {
        padding: 1rem;
    }
    .form-group {
        margin-bottom: 1rem;
    }
    .file-upload {
        padding: 1rem;
    }
}