/* ==========================================================================
   File: psb/css/login.css (Versi Mobile-Optimized & Fixed Horizontal Scroll)
   Deskripsi: Style visual modern & profesional untuk Halaman Login PSB
   Pondok Pesantren Modern Al-Islam Cirebon
   ========================================================================== */

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

/* Variabel Tema Utama (Emerald & Palette Modern) */
:root {
    --primary-color: #0d6e38;        /* Hijau Utama Al-Islam */
    --primary-hover: #074723;        /* Hijau Gelap untuk State Hover */
    --primary-light: #e8f5e9;        /* Hijau Muda untuk Accent & Badge */
    --accent-glow: rgba(13, 110, 56, 0.15);
    
    --bg-gradient-start: #f4f7f5;
    --bg-gradient-end: #e2ede6;
    
    --text-primary: #1e293b;         /* Slate 800 untuk teks utama */
    --text-secondary: #64748b;       /* Slate 500 untuk subteks */
    --border-color: #e2e8f0;         /* Border halus */
    --border-focus: #0d6e38;
    
    --card-bg: #ffffff;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px 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-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Reset Dasar & Pengaturan Font Global */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Plus Jakarta Sans', 'Segoe UI', system-ui, -apple-system, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Tata Letak Body dengan Background Gradien Halus */
body {
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    color: var(--text-primary);
    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 Background Dekoratif Abstrak */
body::before {
    content: '';
    position: absolute;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(13, 110, 56, 0.1) 0%, rgba(255, 255, 255, 0) 70%);
    top: -100px;
    right: -100px;
    border-radius: 50%;
    z-index: 0;
}

body::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(7, 71, 35, 0.08) 0%, rgba(255, 255, 255, 0) 70%);
    bottom: -80px;
    left: -80px;
    border-radius: 50%;
    z-index: 0;
}

/* Kartu Utama Container Login */
.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: 420px;
    border: 1px solid rgba(226, 232, 240, 0.8);
    animation: fadeInUp 0.5s ease-out forwards;
}

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

.header-title h2 {
    color: var(--text-primary);
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.header-title p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: 6px;
    line-height: 1.5;
}

/* Form Group & Input Styling */
.form-group {
    margin-bottom: 20px;
}

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

.form-group input {
    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-primary);
    background-color: #fafafa;
    transition: var(--transition-fast);
}

.form-group input::placeholder {
    color: #94a3b8;
}

/* State Fokus & Hover pada Input */
.form-group input:hover {
    border-color: #cbd5e1;
    background-color: #ffffff;
}

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

/* Alert Pesan Error / Notifikasi Login */
.alert-error {
    background-color: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    font-size: 13.5px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: shake 0.3s ease-in-out;
}

/* Tombol Submit Utama */
.btn-submit {
    width: 100%;
    padding: 13px 20px;
    background-color: var(--primary-color);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    margin-top: 8px;
    box-shadow: 0 4px 12px rgba(13, 110, 56, 0.25);
}

.btn-submit:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(13, 110, 56, 0.35);
}

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

/* Link Footer & Navigasi Bawah */
.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-secondary);
}

.footer-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-fast);
}

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

/* Animasi Smooth Masuk (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 Responsif untuk Perangkat Mobile */
@media (max-width: 480px) {
    /* Sembunyikan ornamen latar belakang di layar kecil agar tidak memicu scroll horizontal */
    body::before,
    body::after {
        display: none;
    }

    body {
        padding: 16px;
        align-items: flex-start; /* Mencegah kartu terpotong di layar pendek/saat keyboard terbuka */
    }
    
    .card {
        width: 100%;
        max-width: 100%;
        padding: 28px 20px;
        border-radius: 12px;
        margin: 10px 0;
        box-sizing: border-box;
    }

    .header-title h2 {
        font-size: 21px;
    }

    /* Menaikkan ukuran font input menjadi 16px untuk mencegah auto-zoom di iOS Safari */
    .form-group input {
        font-size: 16px;
    }
}