/* ==========================================================================
   File: psb/css/register.css (Modul Pendaftaran PSB - Versi Mobile Optimized)
   Deskripsi: Style visual modern & profesional untuk Halaman Pendaftaran PSB
   Pondok Pesantren Modern Al-Islam Cirebon
   ========================================================================== */

/* Import font Plus Jakarta Sans untuk tampilan tipografi modern dan rapi */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

/* Variabel Tema Utama (Modern Emerald Palette) */
:root {
    --primary-green: #0D6E38;        /* Hijau Utama Al-Islam */
    --dark-green: #074723;            /* Hijau Gelap untuk State Hover/Active */
    --light-green: #E8F5E9;           /* Hijau Muda untuk Aksentuasi & Badge */
    --accent-glow: rgba(13, 110, 56, 0.15);
    
    --bg-gradient-start: #F4F7F5;
    --bg-gradient-end: #E2EDE6;
    
    --text-dark: #1E293B;             /* Slate 800 untuk teks utama */
    --text-muted: #64748B;            /* Slate 500 untuk subteks */
    --border-color: #E2E8F0;          /* Border input halus */
    --border-focus: #0D6E38;
    
    --card-bg: #FFFFFF;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    
    --radius-lg: 16px;
    --radius-md: 10px;
    
    --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Pengaman Root untuk Mencegah Horizontal Scroll */
html {
    overflow-x: hidden;
    width: 100%;
}

/* Reset Dasar & Normalisasi Elemen Global */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Plus Jakarta Sans', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Layout Body dengan Background Gradien & Centering */
body {
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    color: var(--text-dark);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 24px 16px;
    position: relative;
    overflow-x: hidden; /* Mencegah elemen keluar batas layar */
    width: 100%;
}

/* Ornamen Abstrak Latar Belakang (Visual Aesthetic) */
body::before {
    content: '';
    position: absolute;
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, rgba(13, 110, 56, 0.08) 0%, rgba(255, 255, 255, 0) 70%);
    top: -120px;
    right: -120px;
    border-radius: 50%;
    z-index: 0;
}

body::after {
    content: '';
    position: absolute;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(7, 71, 35, 0.06) 0%, rgba(255, 255, 255, 0) 70%);
    bottom: -90px;
    left: -90px;
    border-radius: 50%;
    z-index: 0;
}

/* Kontainer Utama Form Pendaftaran */
.card {
    position: relative;
    z-index: 1;
    background: var(--card-bg);
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 440px;
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-top: 5px solid var(--primary-green);
    animation: fadeInUp 0.4s ease-out forwards;
}

/* Header Judul & Deskripsi */
.header-title {
    text-align: center;
    margin-bottom: 28px;
}

.header-title h2 {
    color: var(--text-dark);
    font-size: 23px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.header-title p {
    color: var(--text-muted);
    font-size: 13.5px;
    margin-top: 6px;
    line-height: 1.5;
}

/* Form Group & Input Styling */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 13.5px;
    color: var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px; /* Default desktop */
    color: var(--text-dark);
    background-color: #FAFAFA;
    transition: var(--transition-smooth);
}

.form-group input::placeholder {
    color: #94A3B8;
}

/* State Hover & Fokus Input */
.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
    border-color: #CBD5E1;
    background-color: #FFFFFF;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    background-color: #FFFFFF;
    box-shadow: 0 0 0 4px var(--accent-glow);
}

/* Tombol Submit Utama */
.btn-submit {
    width: 100%;
    padding: 14px 20px; /* Sedikit diperbesar untuk kenyamanan tap di mobile */
    background-color: var(--primary-green);
    color: #FFFFFF;
    border: none;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
    margin-top: 10px;
    box-shadow: 0 4px 12px rgba(13, 110, 56, 0.22);
}

.btn-submit:hover {
    background-color: var(--dark-green);
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(13, 110, 56, 0.32);
}

.btn-submit:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(13, 110, 56, 0.2);
}

/* Alert Pesan Kesalahan / Error */
.alert-error {
    background-color: #FEF2F2;
    color: #991B1B;
    border: 1px solid #FECACA;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    margin-bottom: 22px;
    font-size: 13.5px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: shake 0.3s ease-in-out;
}

/* Alert Pesan Sukses */
.alert-success {
    background-color: #F0FDF4;
    color: #166534;
    border: 1px solid #BBF7D0;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    margin-bottom: 22px;
    font-size: 13.5px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Link Footer Card */
.footer-link {
    text-align: center;
    margin-top: 24px;
    padding-top: 18px;
    border-top: 1px solid var(--border-color);
    font-size: 13.5px;
    color: var(--text-muted);
}

.footer-link a {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 700;
    transition: var(--transition-smooth);
}

.footer-link a:hover {
    color: var(--dark-green);
    text-decoration: underline;
}

/* Animasi Smooth Soft Fade In */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Animasi Shake untuk Alert Error */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}

/* Penyesuaian Layar Smartphone / Mobile (Optimized) */
@media (max-width: 480px) {
    /* Sembunyikan ornamen latar belakang di layar kecil agar tidak memicu geseran horizontal */
    body::before,
    body::after {
        display: none;
    }

    body {
        padding: 16px;
        align-items: flex-start; /* Memastikan form tetap nyaman discroll jika layar pendek */
    }

    .card {
        width: 100%;
        max-width: 100%;
        padding: 28px 20px;
        border-radius: 12px;
        margin: 10px 0;
        box-sizing: border-box;
    }

    .header-title h2 {
        font-size: 20px;
    }

    /* Mencegah auto-zoom pada perangkat iOS dengan menetapkan font minimal 16px */
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px; 
    }
}