/* -------------------------------------------------------------
   PENGATURAN DASAR & LATAR BELAKANG MODERN
------------------------------------------------------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    min-height: 100vh;
    background: radial-gradient(circle at 20% 30%, #0f172a 0%, #020617 100%);
    color: #f8fafc;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    overflow-x: hidden;
    padding: 20px;
}

/* -------------------------------------------------------------
   KONTEN UTAMA DENGAN EFEK GLASSMORPHISM (KACA TINGKAT TINGGI)
------------------------------------------------------------- */
.glass-card {
    position: relative;
    width: 100%;
    max-width: 800px;
    background: rgba(30, 41, 59, 0.45);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-radius: 24px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    overflow: hidden;
}

/* -------------------------------------------------------------
   ANIMASI CAHAYA BERGULIR TANPA HENTI (SHIMMER BORDER EFFECT)
------------------------------------------------------------- */
.glass-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(transparent,
            rgba(56, 189, 248, 0.4),
            /* Warna biru muda neon */
            rgba(34, 197, 94, 0.4),
            /* Warna hijau madrasah neon */
            transparent 60%);
    animation: rotateGlow 6s linear infinite;
    z-index: 1;
}

/* Bagian penutup dalam agar border terlihat tipis dan elegan */
.glass-card-inner {
    position: relative;
    background: #0b1329;
    border-radius: 20px;
    padding: 30px;
    z-index: 2;
}

@keyframes rotateGlow {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* -------------------------------------------------------------
   TYPOGRAPHY & ELEMEN NAVIGASI NYAMAN DI MATA
------------------------------------------------------------- */
h1 {
    font-size: 2.2rem;
    font-weight: 800;
    background: linear-gradient(to right, #38bdf8, #34d399);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 5px;
    letter-spacing: 0.5px;
}

h2 {
    font-size: 1.2rem;
    color: #94a3b8;
    margin-bottom: 30px;
    font-weight: 400;
}

nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-bottom: 35px;
}

nav a {
    color: #cbd5e1;
    text-decoration: none;
    padding: 10px 18px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

nav a:hover {
    background: rgba(56, 189, 248, 0.15);
    border-color: #38bdf8;
    color: #fff;
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.3);
    transform: translateY(-2px);
}

/* Teks Selamat Datang */
.welcome-box p {
    font-size: 1.15rem;
    line-height: 1.7;
    color: #e2e8f0;
    margin-bottom: 35px;
}

/* Tombol Akses Cepat */
.quick-links {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.btn-link {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 14px;
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.2) 0%, rgba(34, 197, 94, 0.2) 100%);
    border: 1px solid rgba(56, 189, 248, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-link:hover {
    background: linear-gradient(135deg, #38bdf8 0%, #22c55e 100%);
    box-shadow: 0 8px 20px rgba(56, 189, 248, 0.4);
    transform: scale(1.03);
}

footer {
    margin-top: 30px;
    color: #64748b;
    font-size: 0.85rem;
}