@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;800&display=swap');

:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.85); /* Sedikit lebih gelap agar kontras di HP bagus */
    --primary: #3b82f6;
    --accent: #06b6d4;
    --success: #10b981;
    --danger: #ef4444;
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
}

* {
    box-sizing: border-box; /* Penting agar padding tidak melebarkan elemen */
}

body {
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(6, 182, 212, 0.15) 0px, transparent 50%);
    color: var(--text-main);
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 20px; /* Memberi jarak sedikit di body */
    min-height: 100vh;
    /* Fix untuk browser HP modern agar address bar tidak menutupi */
    min-height: 100dvh; 
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    width: 100%;
    max-width: 450px; /* Batas lebar di desktop */
    background: var(--card-bg);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px); /* Support untuk Safari/iPhone */
    border: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    animation: fadeIn 0.8s ease-out;
}

h1, h2 {
    font-weight: 800;
    margin-top: 0;
    margin-bottom: 15px;
    background: linear-gradient(to right, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 1.8rem; /* Ukuran default desktop */
}

p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 25px;
}

/* INPUT STYLE */
input {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    background: rgba(0, 0, 0, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: #fff;
    font-size: 1rem;
    text-align: center;
    transition: 0.3s;
}

input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.3);
}

/* BUTTON STYLE */
.btn {
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    /* Mencegah highlight biru saat tap di Android */
    -webkit-tap-highlight-color: transparent;
}

.btn:active {
    transform: scale(0.98);
}

/* STATUS HASIL */
.status-box {
    margin-top: 20px;
    padding: 20px;
    border-radius: 15px;
    background: rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.05);
}

.lulus { 
    color: var(--success); 
    text-shadow: 0 0 20px rgba(16, 185, 129, 0.4); 
    font-size: 2.5rem; 
    font-weight: 800; 
    margin: 20px 0; 
}

.gagal { 
    color: var(--danger); 
    font-size: 2.5rem; 
    font-weight: 800; 
    margin: 20px 0; 
}

/* TABEL DATA SISWA */
.info-row {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding: 12px 0;
    font-size: 0.9rem;
    text-align: left;
}
.info-label { color: var(--text-muted); flex: 1; }
.info-val { color: var(--text-main); font-weight: 600; flex: 1; text-align: right; }

/* ANIMASI */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* =========================================
   RESPONSIVE MOBILE (Layak HP < 600px)
   ========================================= */
@media screen and (max-width: 600px) {
    body {
        padding: 15px; /* Kurangi padding body */
    }

    .container {
        padding: 30px 20px; /* Padding dalam box lebih kecil */
        width: 100%; 
    }

    h1, h2 {
        font-size: 1.5rem; /* Judul lebih kecil */
    }

    p {
        font-size: 0.9rem; /* Teks paragraf lebih kecil */
    }

    .lulus, .gagal {
        font-size: 2rem; /* Status LULUS tidak terlalu raksasa */
    }

    /* PENTING UNTUK IPHONE: 
       Font size minimal 16px di input agar tidak auto-zoom saat diklik */
    input, .btn {
        font-size: 16px; 
        padding: 14px;
    }

    /* Agar tabel info siswa menumpuk ke bawah jika layar sangat sempit */
    .info-row {
        flex-direction: column;
        text-align: center;
        gap: 5px;
    }
    .info-val {
        text-align: center;
    }
    
}
/* --- TAMBAHAN GAYA LOGO --- */
.school-logo {
    width: 120px; /* Ukuran Desktop */
    height: 120px;
    object-fit: cover;
    border-radius: 50%; /* Membuat lingkaran */
    border: 4px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 25px rgba(59, 130, 246, 0.5); /* Efek glowing biru */
    margin-bottom: 20px;
    animation: floatLogo 3s ease-in-out infinite;
}

@keyframes floatLogo {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

/* Penyesuaian HP */
@media screen and (max-width: 480px) {
    .school-logo {
        width: 90px; /* Lebih kecil di HP */
        height: 90px;
        margin-bottom: 15px;
    }
}