:root {
    /* Color Palette */
    --primary-blue: #4a75ff; /* Main blue for accents and highlights */
    --secondary-blue: #00bcd4; /* Lighter blue, often for interactive elements */
    --dark-blue: #1a237e; /* Darker blue, good for deep text or subtle backgrounds */
    --text-light: #e0e0e0; /* Light gray for general text readability */
    --bg-gradient-start: #000080; /* Deep navy blue for background gradient start */
    --bg-gradient-end: #4169e1;   /* Royal blue for background gradient end */
    --card-bg: rgba(255, 255, 255, 0.1); /* Semi-transparent white for card backgrounds */
    --border-color: rgba(255, 255, 255, 0.2); /* Slightly more opaque white for borders */
}

/* --- Global Resets & Base Styles --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box; /* Ensures consistent box model across elements */
}

html {
    scroll-behavior: smooth; /* Smooth scrolling for anchor links */
}

body {
    font-family: 'Poppins', sans-serif; /* Modern, clean sans-serif font */
    color: var(--text-light); /* Default text color */
    background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end)); /* Beautiful blue gradient background */
    min-height: 100vh; /* Full viewport height */
    display: flex; /* Flexbox for centering content */
    justify-content: center;
    align-items: center;
    overflow-x: hidden; /* Prevents horizontal scrollbars */
    position: relative; /* Needed for absolute positioning of pseudo-elements/particles */
}

.logo-icon {
  width: 120px;   /* Ganti sesuai kebutuhan */
  height: auto;
  display: block;
  margin: 0 auto;
}

.wrapper {
    width: 100%;
    max-width: 1400px; /* Limits content width for better readability */
    padding: 20px;
    display: flex;
    flex-direction: column; /* Stacks header, main, footer vertically */
    min-height: 100vh; /* Ensures wrapper fills viewport height */
}
.logo {
  font-weight: 700;
  font-size: 1.5rem;
  font-family: 'Poppins', sans-serif;

  background: linear-gradient(
    90deg,
    #ff7e5f,
    #feb47b,
    #ff7e5f,
    #feb47b
  );
  background-size: 200% 100%;  /* buat ruang animasi */
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;

  animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}


/* --- Header & Navigation --- */
.header {
    width: 100%;
    padding: 20px 0;
    z-index: 100; /* Ensures header is above other content */
}

.navbar {
    display: flex;
    justify-content: space-between; /* Spreads logo and nav links */
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: #fff; /* Pure white for logo */
    letter-spacing: 1px;
}

.nav-links {
    list-style: none; /* Removes default list bullets */
    display: flex;
}

.nav-links li {
    margin-left: 30px; /* Spacing between navigation items */
}

.nav-links a {
    color: var(--text-light); /* Default link color */
    text-decoration: none; /* Removes underline */
    font-weight: 400;
    font-size: 1.1rem;
    transition: color 0.3s ease; /* Smooth color transition on hover */
}

.nav-links a:hover {
    color: var(--secondary-blue); /* Changes color on hover */
}

/* --- Main Content & Hero Section --- */
.main-content {
    flex-grow: 1; /* Allows main content to take up available space */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 50px 0;
}

.hero-section {
    display: flex;
    flex-direction: row; /* Horizontal layout for text and illustration */
    align-items: center;
    justify-content: center;
    gap: 50px; /* Space between text and illustration */
    width: 100%;
    padding: 50px 0;
}

.hero-text {
    flex: 1;
    max-width: 600px;
    text-align: left; /* Text alignment for hero content */
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #fff;
    /* Gradient text effect */
    background: linear-gradient(90deg, #a7d9ff, #6290ff);
    -webkit-background-clip: text; /* Clips background to text shape */
    -webkit-text-fill-color: transparent; /* Makes text transparent to show background */
}

.hero-text p {
    font-size: 1.2rem;
    line-height: 1.6;
    margin-bottom: 30px;
    color: var(--text-light);
}

.countdown {
    display: flex;
    justify-content: flex-start; /* Aligns countdown items to the left */
    gap: 30px; /* Space between countdown items */
    margin-top: 40px;
    margin-bottom: 30px;
}

.countdown-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 20px 30px;
    min-width: 120px;
    text-align: center;
    backdrop-filter: blur(5px); /* Glassmorphism effect */
    transition: transform 0.3s ease; /* Smooth transform on hover */
}

.countdown-item:hover {
    transform: translateY(-5px); /* Slight lift on hover */
}

.countdown-item span {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 5px;
}

.countdown-item small {
    font-size: 1rem;
    color: var(--text-light);
}

.launch-message {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--secondary-blue);
    margin-top: 20px;
    display: none; /* Hidden by default, shown by JavaScript */
}

.hero-illustration {
    flex: 1;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 400px; /* Fixed height for illustration container */
}

.illustration-placeholder {
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1); /* Semi-transparent background */
    border-radius: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    color: var(--text-light);
    border: 2px dashed var(--border-color);
    /* --- IMPORTANT: REPLACE WITH YOUR ACTUAL ILLUSTRATION --- */
    /* Uncomment and update the path to your image */
    /* background-image: url('../assets/your-illustration-name.png'); */
    /* background-size: contain; */
    /* background-repeat: no-repeat; */
    /* background-position: center; */
    /* -------------------------------------------------------- */
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.3); /* Subtle shadow for depth */
    transition: transform 0.2s ease-out; /* For JS parallax effect */
}

/* Floating elements within the illustration for subtle animation */
.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none; /* Allows mouse events to pass through to the illustration-placeholder */
}

.elem {
    position: absolute;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%; /* Default to circle shape */
    animation: float 6s ease-in-out infinite; /* Applies floating animation */
    transition: transform 0.2s ease-out; /* For JS parallax effect */
}

.elem-1 {
    width: 80px;
    height: 80px;
    top: 10%;
    left: 5%;
    animation-delay: 0s;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 15px; /* Square with rounded corners */
    transform: rotate(20deg);
}
.elem-2 {
    width: 50px;
    height: 50px;
    top: 70%;
    left: 80%;
    animation-delay: 2s;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
}
.elem-3 {
    width: 60px;
    height: 60px;
    top: 40%;
    left: 30%;
    animation-delay: 4s;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: scale(0.8);
}

/* Keyframe animation for floating elements */
@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0); }
}

/* --- Features Section --- */
.features-section {
    width: 100%;
    max-width: 1200px;
    margin-top: 80px;
    padding: 50px 20px;
    background: var(--card-bg); /* Uses semi-transparent card background */
    border-radius: 20px;
    backdrop-filter: blur(10px); /* Stronger blur for this section */
    border: 1px solid var(--border-color);
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.3);
    text-align: center;
}

.features-section h2 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 40px;
    color: #fff;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); /* Responsive grid columns */
    gap: 30px; /* Space between grid items */
}

.feature-item {
    background: rgba(255, 255, 255, 0.05); /* Lighter background for individual items */
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease, background 0.3s ease; /* Smooth transitions for hover effects */
}

.feature-item:hover {
    transform: translateY(-10px); /* Lifts item on hover */
    background: rgba(255, 255, 255, 0.1); /* Slightly more opaque background on hover */
}

.feature-item i {
    font-size: 3rem;
    color: var(--secondary-blue);
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #fff;
}

.feature-item p {
    font-size: 1rem;
    color: var(--text-light);
}

/* --- Footer --- */
.footer {
    width: 100%;
    padding: 30px 0;
    text-align: center;
    margin-top: 50px;
    border-top: 1px solid rgba(255, 255, 255, 0.1); /* Subtle top border */
}

.social-links {
    margin-bottom: 20px;
}

.social-icon {
    color: var(--text-light);
    font-size: 1.5rem;
    margin: 0 15px;
    transition: color 0.3s ease, transform 0.3s ease;
}

.social-icon:hover {
    color: var(--secondary-blue);
    transform: scale(1.2); /* Enlarges icon on hover */
}

.footer p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7); /* Slightly less opaque text */
}

/* --- Responsive Design --- */
@media (max-width: 992px) {
    .hero-section {
        flex-direction: column; /* Stacks text and illustration vertically */
        text-align: center;
    }

    .hero-text {
        text-align: center;
        max-width: 100%; /* Allows text to take full width */
    }

    .hero-text h1 {
        font-size: 2.8rem;
    }

    .countdown {
        justify-content: center; /* Centers countdown items */
        flex-wrap: wrap; /* Allows items to wrap to next line */
        gap: 20px;
    }

    .countdown-item {
        min-width: 100px;
        padding: 15px 20px;
    }

    .countdown-item span {
        font-size: 2.5rem;
    }

    .hero-illustration {
        height: 300px; /* Adjust height for smaller screens */
        margin-top: 40px;
    }

    .features-grid {
        grid-template-columns: 1fr; /* Single column for features */
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column; /* Stacks logo and nav links */
    }

    .nav-links {
        margin-top: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-links li {
        margin: 0 15px 10px; /* Adjust spacing for wrapped links */
    }

    .hero-text h1 {
        font-size: 2.2rem;
    }

    .hero-text p {
        font-size: 1rem;
    }

    .countdown-item span {
        font-size: 2rem;
    }

    .countdown-item small {
        font-size: 0.8rem;
    }

    .features-section h2 {
        font-size: 2rem;
    }

    .feature-item h3 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.5rem;
    }

    .hero-text h1 {
        font-size: 1.8rem;
    }

    .countdown-item {
        width: 100%; /* Makes countdown items fill width on very small screens */
        min-width: unset; /* Removes minimum width constraint */
    }

    .social-icon {
        font-size: 1.2rem;
        margin: 0 10px;
    }
}

/* --- Additional Animation: Background Particles Effect --- */
body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* Subtle dot pattern */
    background-image: radial-gradient(circle at top left, rgba(255,255,255,0.05) 1px, transparent 1px),
                      radial-gradient(circle at bottom right, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 50px 50px; /* Size of the repeating pattern */
    opacity: 0.7;
    animation: moveBackground 60s linear infinite; /* Slow, continuous movement */
    z-index: -1; /* Ensures particles are behind content */
}



/* Keyframe animation for moving background particles */
@keyframes moveBackground {
    0% { background-position: 0 0; }
    100% { background-position: 50px 50px; } /* Ensures seamless loop with 50px background-size */
}