:root {
    --bg-dark: #0b1120;
    --primary: #ef4444;
    --primary-hover: #dc2626;
    --secondary: #f43f5e;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --card-bg: #1e293b;
    --nav-bg: rgba(11, 17, 32, 0.85);
    
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--bg-dark);
    box-shadow: 0 4px 14px rgba(239, 68, 68, 0.4);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.6);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-main);
    border: 1px solid var(--text-muted);
}

.btn-outline:hover {
    border-color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.05);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    font-weight: 800;
}

/* Navbar */
nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
    padding: 1.5rem 0;
}

nav.scrolled {
    background-color: var(--nav-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    text-decoration: none;
    color: var(--text-main);
}

.logo span {
    color: var(--primary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    font-size: 0.95rem;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary);
}

/* Hamburger */
.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-main);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    padding-top: 5rem;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    z-index: 2;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.hero-graphic {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    height: 400px;
}

.glow-orb {
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(239, 68, 68, 0.15) 0%, rgba(11,17,32,0) 70%);
    border-radius: 50%;
    z-index: 1;
}

.chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 15px;
    z-index: 2;
    height: 150px;
}

.bar {
    width: 40px;
    border-radius: 4px;
    animation: grow 2s ease-out forwards;
    transform-origin: bottom;
}

.bar.up {
    background: linear-gradient(to top, #dc2626, #ef4444);
    box-shadow: 0 0 15px rgba(239, 68, 68, 0.4);
    height: 60%;
}

.bar.down {
    background: linear-gradient(to top, #475569, #64748b);
    box-shadow: 0 0 15px rgba(100, 116, 139, 0.4);
    height: 40%;
}

.bar.tall {
    height: 100%;
}

@keyframes grow {
    from { transform: scaleY(0); }
    to { transform: scaleY(1); }
}

/* Sections */
.section {
    padding: 6rem 0;
}

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

.card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary), var(--primary));
    opacity: 0;
    transition: var(--transition);
}

.card:hover::before {
    opacity: 1;
}

.card-icon {
    width: 50px;
    height: 50px;
    margin-bottom: 1.5rem;
}

.card-icon.blue { color: var(--secondary); }
.card-icon.green { color: var(--primary); }
.card-icon.cyan { color: #fb7185; }

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.card p {
    color: var(--text-muted);
}

/* Edukasi Text */
.edukasi-grid {
    background-color: var(--card-bg);
    padding: 3rem;
    border-radius: 1rem;
    border-left: 4px solid var(--secondary);
}

.edukasi-text p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.edukasi-text p:last-child {
    margin-bottom: 0;
}

/* Strategi List */
.strategi-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.strategi-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    transition: var(--transition);
}

.strategi-item:hover {
    background-color: #273549;
}

.strategi-number {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--primary);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 800;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.strategi-item h3 {
    margin-bottom: 0.5rem;
}

.strategi-item p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Footer */
.footer {
    background-color: #050810;
    padding: 4rem 0 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-brand h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.footer-brand span {
    color: var(--primary);
}

.footer-brand p {
    color: var(--text-muted);
}

.footer-cta h3 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-cta .btn {
    margin-right: 1rem;
    margin-bottom: 1rem;
}

.disclaimer {
    background-color: rgba(255, 255, 255, 0.03);
    padding: 1.5rem;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
    font-size: 0.85rem;
    color: #64748b;
}

.copyright {
    text-align: center;
    color: #64748b;
    font-size: 0.9rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 2rem;
}

/* Animations & Responsive */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.appear {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        justify-content: center;
        text-align: center;
        padding-top: 8rem;
    }
    
    .hero-content {
        margin-bottom: 3rem;
    }
    
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .strategi-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background-color: var(--card-bg);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: 0.4s ease-in-out;
        box-shadow: -10px 0 30px rgba(0,0,0,0.5);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-menu li {
        margin: 1.5rem 0;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}