/* Animasi Fade In Up saat halaman dimuat */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Glassmorphism Card */
.glass-card {
    background: rgba(30, 41, 59, 0.7); /* Slate 800 dengan transparansi */
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08) !important;
    border-radius: 16px;
}

/* Custom Form Floating Input (Dark Mode Friendly) */
.form-floating > .custom-input {
    background-color: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #f8fafc;
    border-radius: 10px;
    height: 58px;
}

.form-floating > .custom-input:focus {
    background-color: rgba(15, 23, 42, 0.9);
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 0.25rem rgba(79, 70, 229, 0.25);
    color: #ffffff;
}

.form-floating > label {
    color: #94a3b8;
    padding-left: 1rem;
}

.form-floating > .custom-input:focus ~ label,
.form-floating > .custom-input:not(:placeholder-shown) ~ label {
    color: var(--brand-primary);
    transform: scale(0.85) translateY(-0.5rem) translateX(0.15rem);
}

/* Demo Button Styling */
.demo-btn {
    border-color: rgba(255, 255, 255, 0.1);
    color: #cbd5e1;
    transition: all 0.2s ease;
}

.demo-btn:hover {
    background-color: rgba(79, 70, 229, 0.15);
    border-color: var(--brand-primary);
    color: #ffffff;
    transform: translateY(-1px);
}
:root {
    --brand-primary: #4f46e5;   /* Indigo modern */
    --brand-secondary: #06b6d4; /* Cyan modern */
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: #0f172a; /* Slate 900 - Dark mode premium */
    color: #f8fafc;
}

/* Glassmorphism Navbar */
.brandbar {
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.brandbar .navbar-brand {
    font-size: 1.35rem;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #ffffff 0%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: transform 0.2s ease;
}

.brandbar .navbar-brand:hover {
    transform: scale(1.03);
}

.brandbar .nav-link {
    color: #cbd5e1 !important;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s ease, transform 0.2s ease;
}

.brandbar .nav-link:hover {
    color: #ffffff !important;
    transform: translateY(-1px);
}

/* Dropdown Menu Styling */
.dropdown-menu {
    background-color: #1e293b;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.dropdown-item {
    color: #cbd5e1;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background-color: rgba(79, 70, 229, 0.1);
    color: #ffffff;
}

/* Custom Primary Button dengan Gradient */
.btn-primary {
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
    border: none;
    font-weight: 600;
    letter-spacing: 0.3px;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(79, 70, 229, 0.4);
    background: linear-gradient(135deg, #4338ca 0%, #0891b2 100%);
}

/* Smooth Scroll untuk seluruh halaman */
html {
    scroll-behavior: smooth;
}
:root{--navy:#2a397e;--gold:#feb100;--bg:#f6f8fc;--ink:#16213e;--muted:#64748b}
body{background:var(--bg);color:var(--ink);font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif}.brandbar{background:linear-gradient(100deg,var(--navy),#18245b)}
.hero{background:linear-gradient(135deg,#fff 0%,#eef2ff 100%);border:1px solid #e5e7eb;border-radius:24px;padding:42px}.accent{color:var(--navy)}
.btn-brand{background:var(--navy);color:#fff;border:none}.btn-brand:hover{background:#202d69;color:#fff}.btn-gold{background:var(--gold);border:none;color:#182033;font-weight:700}
.card-soft{border:0;border-radius:20px;box-shadow:0 12px 35px rgba(20,35,80,.08)}.metric{font-size:2rem;font-weight:800}.smallcaps{font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:700}
.progress{height:10px;border-radius:10px}.feature-icon{width:44px;height:44px;border-radius:12px;background:#eef2ff;color:var(--navy);display:grid;place-items:center;font-weight:800}
.sidebar-link{display:block;padding:10px 12px;border-radius:10px;text-decoration:none;color:#334155}.sidebar-link:hover,.sidebar-link.active{background:#eef2ff;color:var(--navy);font-weight:700}
.question-option{border:1px solid #dbe2ef;border-radius:14px;padding:12px 14px;margin-bottom:10px;cursor:pointer;background:white}.question-option:hover{border-color:var(--navy);background:#f8faff}
.lab-wrap{background:white;border-radius:20px;padding:18px}.status-pill{display:inline-flex;padding:6px 10px;border-radius:999px;font-size:.85rem;font-weight:700}.danger{background:#fee2e2;color:#991b1b}.warn{background:#fef3c7;color:#92400e}.good{background:#dcfce7;color:#166534}.info{background:#dbeafe;color:#1e40af}
.tutor-box{height:420px;overflow-y:auto;background:#fff;border:1px solid #e2e8f0;border-radius:16px;padding:16px}.msg{max-width:80%;padding:10px 12px;border-radius:14px;margin:8px 0}.msg.ai{background:#eef2ff}.msg.user{background:#2a397e;color:white;margin-left:auto}
@media(max-width:768px){.hero{padding:24px}}