:root {
    /* Vinera Light Mode (Default) */
    --bg-base: #FFFFFF;
    --bg-alt: #F8FAFC;
    --bg-card: #FFFFFF;
    --bg-dark: #0F172A;
    --bg-dark-card: #1E293B;
    
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-light: #F8FAFC;
    --text-light-dim: #94A3B8;
    
    --brand-teal: #0D9488;
    --brand-teal-light: #E0F2FE;
    --brand-teal-dark: #115E59;
    
    --border-color: #E2E8F0;
    --border-dark: #334155;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    
    --font-main: 'Inter', sans-serif;
}

.dark {
    /* Dark Mode Override */
    --bg-base: #020617;
    --bg-alt: #0F172A;
    --bg-card: #1E293B;
    
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    
    --border-color: #334155;
    
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.5);
    --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.5);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--font-main);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Utilities */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}
.section { padding: 100px 0; }
.bg-light-alt { background-color: var(--bg-alt); }
.section-dark { 
    background-color: var(--bg-dark); 
    color: var(--text-light);
}
.text-white { color: #FFFFFF !important; }
.mt-4 { margin-top: 1rem; }
.mb-5 { margin-bottom: 2rem; }

/* Typography */
h1, h2, h3 { font-weight: 700; letter-spacing: -0.02em; line-height: 1.2; }
.pre-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--brand-teal);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
}
.pre-title::before {
    content: '';
    display: inline-block;
    width: 24px;
    height: 2px;
    background-color: var(--brand-teal);
    margin-right: 12px;
}
.section-title { font-size: 2.5rem; margin-bottom: 24px; }
.section-desc { font-size: 1.1rem; color: var(--text-secondary); max-width: 700px; }
.section-dark .section-desc { color: var(--text-light-dim); }

/* Buttons & Badges */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    gap: 8px;
}
.btn-primary {
    background-color: var(--brand-teal);
    color: #FFF;
    box-shadow: 0 4px 14px rgba(13, 148, 136, 0.3);
}
.btn-primary:hover {
    background-color: var(--brand-teal-dark);
    transform: translateY(-2px);
}
.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover { background-color: var(--bg-alt); }
.btn-outline-teal {
    background: transparent;
    border: 1px solid var(--brand-teal);
    color: var(--brand-teal);
    box-shadow: none;
}
.btn-outline-teal:hover {
    background: rgba(13, 148, 136, 0.1);
}

.btn-icon { padding: 8px 24px 8px 12px; }
.btn-icon svg { width: 32px; height: 32px; background: rgba(0,0,0,0.1); border-radius: 50%; padding: 6px; fill:currentColor; }
.btn-text-group { display: flex; flex-direction: column; align-items: flex-start; line-height: 1.2; }
.btn-text-group .sub-text { font-size: 0.75rem; font-weight: 400; opacity: 0.9; }

.badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    background: var(--brand-teal-light);
    color: var(--brand-teal-dark);
}
.badge-outline {
    background: transparent;
    border: 1px solid var(--brand-teal);
    color: var(--brand-teal);
    border-radius: 50px;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0; left: 0; width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 16px 0;
}
.dark .navbar {
    background: rgba(2, 6, 23, 0.9);
}
.navbar-container { display: flex; justify-content: space-between; align-items: center; }
.logo img, .nav-logo, .nav-logo img { height: 32px; display: block; width: auto; }
.dark .nav-logo, .dark .logo img { filter: brightness(0) invert(1); }
.nav-menu { display: flex; list-style: none; gap: 32px; }
.nav-link { color: var(--text-secondary); text-decoration: none; font-weight: 500; font-size: 0.9rem; transition: color 0.2s; }
.nav-link:hover { color: var(--brand-teal); }
.nav-actions { display: flex; align-items: center; gap: 16px; }

.text-brand { color: var(--brand-teal); }

.theme-toggle-btn { background: transparent; border: none; cursor: pointer; color: var(--text-secondary); width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; }
.theme-toggle-btn svg { width: 20px; height: 20px; fill: currentColor; }
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; }
.hamburger span { width: 24px; height: 2px; background: var(--text-primary); }

/* Hero */
.hero-section {
    padding-top: 140px; padding-bottom: 80px;
    position: relative; overflow: hidden;
}
.ambient-glow {
    position: absolute; top: -20%; left: -10%; width: 50vw; height: 50vw;
    background: radial-gradient(circle, var(--brand-teal-light) 0%, transparent 60%);
    z-index: -1; opacity: 0.5;
}
.dark .ambient-glow { opacity: 0.1; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; margin-bottom: 60px; }
.hero-title { font-size: 3.5rem; }
.hero-desc { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 32px; }
.hero-ctas { display: flex; gap: 16px; }
.image-frame-minimal img { width: 100%; border-radius: 24px; box-shadow: var(--shadow-lg); display: block; }
.stats-row { display: flex; justify-content: space-between; border-top: 1px solid var(--border-color); padding-top: 40px; }
.stat-box .stat-val { font-size: 2rem; font-weight: 800; color: var(--text-primary); margin-bottom: 4px; }
.stat-box .stat-lbl { font-size: 0.9rem; color: var(--text-secondary); max-width: 200px; }

/* Masalah */
.problems-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.problem-stats { display: flex; gap: 40px; margin-top: 40px; }
.p-stat-val { font-size: 3rem; font-weight: 800; color: var(--brand-teal); line-height: 1; }
.p-stat-lbl { font-size: 0.8rem; color: var(--text-light-dim); letter-spacing: 1px; margin-top: 8px; }
.problem-list { display: flex; flex-direction: column; gap: 20px; }
.problem-card { background: var(--bg-dark-card); padding: 24px; border-radius: 16px; display: flex; gap: 20px; border: 1px solid var(--border-dark); }
.problem-num { font-size: 2rem; font-weight: 800; color: rgba(255,255,255,0.1); font-family: monospace; }
.problem-card h3 { color: var(--text-light); margin-bottom: 8px; font-size: 1.2rem; }
.problem-card p { color: var(--text-light-dim); font-size: 0.95rem; }

/* Solusi */
.solution-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.img-cluster { position: relative; height: 400px; }
.img-cluster img { position: absolute; border-radius: 16px; box-shadow: var(--shadow-lg); object-fit: cover; }
.img-cluster img:nth-child(1) { width: 60%; height: 80%; top: 0; left: 0; z-index: 2; }
.img-cluster img:nth-child(2) { width: 55%; height: 70%; bottom: 0; right: 0; z-index: 1; }
.checklist { list-style: none; margin-top: 32px; }
.checklist li { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 16px; font-size: 1rem; color: var(--text-secondary); }
.checklist li svg { width: 24px; height: 24px; fill: var(--brand-teal); flex-shrink: 0; }

/* Fitur */
.section-header-left { margin-bottom: 40px; max-width: 600px; }
.features-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.fitur-card { background: var(--bg-card); border: 1px solid var(--border-color); padding: 32px 24px; border-radius: 16px; transition: transform 0.3s, box-shadow 0.3s; }
.fitur-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.fitur-icon { width: 48px; height: 48px; background: var(--brand-teal-light); color: var(--brand-teal-dark); border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 20px; }
.fitur-icon svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; }
.fitur-card h3 { font-size: 1.1rem; margin-bottom: 12px; }
.fitur-card p { font-size: 0.9rem; color: var(--text-secondary); }

/* Riset */
.research-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.info-list { list-style: none; margin-top: 32px; display: flex; flex-direction: column; gap: 16px; }
.info-list li { background: var(--bg-alt); padding: 16px 20px; border-radius: 12px; border: 1px solid var(--border-color); font-size: 0.95rem; display: flex; gap: 16px; align-items: center; }
.info-list li svg { width: 24px; height: 24px; fill: var(--brand-teal); flex-shrink: 0; }
.footnote { margin-top: 24px; font-size: 0.85rem; color: var(--brand-teal); display: flex; align-items: center; gap: 8px; font-weight: 500; }

/* Paket */
.pricing-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 40px; margin-bottom: 40px; max-width: 900px; margin-left: auto; margin-right: auto; }
.price-card { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 24px; padding: 40px 32px; display: flex; flex-direction: column; position: relative; transition: transform 0.3s, box-shadow 0.3s; }
.price-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-lg); }
.price-card.popular { border-color: var(--brand-teal); box-shadow: 0 0 0 2px var(--brand-teal), var(--shadow-lg); background: var(--bg-dark); color: var(--text-light); }
.price-card.popular .price-tag, .price-card.popular .price-sub, .price-card.popular .price-features li { color: var(--text-light-dim); }
.popular-badge { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--brand-teal); color: white; font-size: 0.85rem; font-weight: 700; padding: 6px 16px; border-radius: 50px; text-transform: uppercase; letter-spacing: 1px; box-shadow: 0 4px 10px rgba(13,148,136,0.3); }
.price-tag { font-size: 0.9rem; font-weight: 700; color: var(--text-secondary); margin-bottom: 12px; letter-spacing: 1px; }
.price-title { font-size: 1.5rem; margin-bottom: 16px; }
.original-price { font-size: 1rem; color: #EF4444; text-decoration: line-through; margin-bottom: 4px; font-weight: 600; }
.price-amount { font-size: 2.5rem; font-weight: 800; margin-bottom: 8px; line-height: 1; }
.price-sub { font-size: 1rem; color: var(--text-secondary); margin-bottom: 32px; padding-bottom: 32px; border-bottom: 1px solid var(--border-color); font-weight: 600; }
.price-card.popular .price-sub { color: var(--brand-teal-light); border-color: var(--border-dark); }
.price-features { list-style: none; display: flex; flex-direction: column; gap: 16px; flex-grow: 1; }
.price-features li { display: flex; gap: 12px; font-size: 1rem; color: var(--text-secondary); align-items: center; }
.price-features li svg { width: 20px; height: 20px; fill: var(--brand-teal); flex-shrink: 0; }

/* Pencapaian Timeline */
.achievements-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 60px; }
.timeline-item { display: flex; gap: 24px; margin-bottom: 32px; position: relative; }
.timeline-item::before { content: ''; position: absolute; left: 5px; top: 24px; bottom: -32px; width: 2px; background: var(--brand-teal-light); }
.timeline-item:last-child::before { display: none; }
.timeline-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--brand-teal); position: relative; z-index: 2; margin-top: 6px; box-shadow: 0 0 0 4px var(--brand-teal-light); flex-shrink: 0; }
.timeline-year { font-weight: 700; color: var(--brand-teal); margin-bottom: 4px; font-size: 0.9rem; }
.timeline-text { color: var(--text-secondary); }

/* Kontak */
.contact-split { display: grid; grid-template-columns: 1fr 1fr; border-radius: 24px; overflow: hidden; background: var(--bg-card); box-shadow: var(--shadow-md); border: 1px solid var(--border-color); }
.contact-form-side { padding: 60px; }
.demo-form { margin-top: 32px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.75rem; font-weight: 700; color: var(--text-secondary); margin-bottom: 8px; letter-spacing: 1px; }
.form-control { width: 100%; padding: 12px 16px; border: 1px solid var(--border-color); border-radius: 8px; background: var(--bg-alt); font-family: var(--font-main); transition: border 0.2s; }
.form-control:focus { outline: none; border-color: var(--brand-teal); }

.contact-info-side { padding: 60px; display: flex; flex-direction: column; justify-content: center; }
.detail-item { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 24px; }
.detail-icon { width: 24px; height: 24px; color: var(--brand-teal); }
.detail-icon svg { width: 100%; height: 100%; fill: currentColor; }
.detail-label { font-size: 0.75rem; font-weight: 700; color: var(--text-light-dim); letter-spacing: 1px; margin-bottom: 4px; }
.detail-value { color: var(--text-light); font-size: 0.95rem; }

/* Footer */
.footer { padding: 32px 0; border-top: 1px solid var(--border-dark); }
.footer-content { display: flex; justify-content: space-between; align-items: center; }
.footer-logo { display: flex; align-items: center; }
.footer-copyright { color: var(--text-light-dim); font-size: 0.85rem; }

/* Animations */
.fade-in-up { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in-up.visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.2s; }

/* Responsive */
@media (max-width: 1024px) {
    .features-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .hero-grid, .problems-grid, .solution-grid, .research-grid, .achievements-grid, .contact-split { grid-template-columns: 1fr; gap: 40px; }
    .stats-row { flex-wrap: wrap; gap: 24px; }
    .img-cluster { height: 300px; }
}
@media (max-width: 768px) {
    .hamburger { display: flex; }
    .nav-menu { display: none; position: absolute; top: 100%; left: 0; width: 100%; background: var(--bg-card); flex-direction: column; padding: 20px; border-bottom: 1px solid var(--border-color); }
    .nav-menu.active { display: flex; }
    .nav-actions .btn { display: none; }
    .features-grid-4, .pricing-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .contact-form-side, .contact-info-side { padding: 32px 24px; }
    .footer-content { flex-direction: column; gap: 16px; text-align: center; }
    .hero-title { font-size: 2.5rem; }
    .p-stat-val { font-size: 2.5rem; }
}