:root {
    --bg-color: #f4f4f0;
    --text-color: #0d0d0d;
    --primary: #ff003c;
    --border-color: #0d0d0d;
    --shadow: 5px 5px 0px var(--border-color);
    --font-main: 'Courier New', Courier, monospace;
}

[data-theme="dark"] {
    --bg-color: #0d0d0d;
    --text-color: #f4f4f0;
    --primary: #ff003c;
    --border-color: #f4f4f0;
    --shadow: 5px 5px 0px var(--primary);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

/* Header & Navigasi */
.anarko-header { display: flex; justify-content: space-between; align-items: center; padding: 20px; border-bottom: 3px solid var(--border-color); }
.anarko-nav { display: flex; flex-wrap: wrap; border-bottom: 3px solid var(--border-color); }
.nav-btn { flex: 1; min-width: 100px; padding: 15px; background: transparent; color: var(--text-color); border: none; border-right: 3px solid var(--border-color); font-family: var(--font-main); font-size: 1.2rem; font-weight: bold; cursor: pointer; text-transform: uppercase; }
.nav-btn:last-child { border-right: none; }
.nav-btn:hover, .nav-btn.active { background: var(--primary); color: #fff; }

/* Layout Grid untuk Form & Riwayat */
.layout-wrapper { display: flex; flex-wrap: wrap; max-width: 1200px; margin: 0 auto; }
.container { flex: 2; min-width: 300px; padding: 20px; }
.history-panel { flex: 1; min-width: 250px; padding: 20px; border-left: 3px solid var(--border-color); height: 100vh; overflow-y: auto; background-color: rgba(0,0,0,0.05); }

.calc-section.hidden { display: none; }
h2, h3 { margin-bottom: 20px; text-transform: uppercase; }
.guide-box { border: 2px dashed var(--border-color); padding: 15px; margin-bottom: 25px; font-size: 0.9rem; box-shadow: 3px 3px 0px var(--border-color); }

/* Form Input & Tombol */
.input-group { margin-bottom: 20px; }
.input-group label { display: block; font-weight: bold; margin-bottom: 5px; }
input { width: 100%; padding: 12px; background: transparent; border: 3px solid var(--border-color); color: var(--text-color); font-family: var(--font-main); font-size: 1rem; box-shadow: var(--shadow); transition: all 0.2s ease; }
input:focus { outline: none; transform: translate(2px, 2px); box-shadow: 2px 2px 0px var(--primary); }
/* Penataan Baris Arus Kas (Berdampingan) */
.cf-row { 
    display: flex; 
    gap: 10px; /* Jarak antara input dan tombol hapus */
    margin-bottom: 10px; 
}

/* Desain Tombol Hapus Baris */
.btn-delete {
    background: var(--primary);
    color: #fff;
    border: 3px solid var(--border-color);
    font-family: var(--font-main);
    font-weight: bold;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0 15px; /* Lebar tombol menyesuaikan teks */
    box-shadow: 3px 3px 0px var(--border-color);
    transition: transform 0.1s, box-shadow 0.1s;
}

.btn-delete:active { 
    transform: translate(3px, 3px); 
    box-shadow: none; 
}

.btn-brutal { padding: 12px 20px; background: var(--bg-color); color: var(--text-color); border: 3px solid var(--border-color); font-family: var(--font-main); font-weight: bold; cursor: pointer; box-shadow: var(--shadow); text-transform: uppercase; transition: transform 0.1s, box-shadow 0.1s; }
.btn-brutal:active { transform: translate(5px, 5px); box-shadow: none; }
.btn-small { padding: 8px 12px; font-size: 0.9rem; }
.btn-submit { width: 100%; background: var(--primary); color: #fff; margin-top: 20px; font-size: 1.2rem; }

/* Hasil & Grafik */
.result-box { margin-top: 40px; padding: 20px; border: 3px solid var(--primary); box-shadow: var(--shadow); background: var(--bg-color); }
.result-box.hidden { display: none; }
.interpretasi { margin-top: 15px; font-style: italic; border-left: 4px solid var(--primary); padding-left: 10px; margin-bottom: 20px; }
.chart-container { width: 100%; max-width: 600px; margin: 0 auto; background: white; padding: 10px; border: 2px solid var(--border-color); }
.action-buttons { display: flex; gap: 10px; margin-top: 20px; }
.action-buttons button { flex: 1; }
.print-header { display: none; font-weight: bold; text-align: center; margin-bottom: 20px; font-size: 1.5rem; text-decoration: underline; }

/* Desain Riwayat List */
#history-list { list-style: none; }
.history-item { padding: 10px; border: 2px solid var(--border-color); margin-bottom: 10px; cursor: pointer; transition: all 0.2s; background: var(--bg-color); }
.history-item:hover { background: var(--primary); color: white; transform: translate(-3px, -3px); box-shadow: 4px 4px 0px var(--border-color); }
.history-item small { display: block; opacity: 0.8; font-size: 0.8rem; }

.toast { position: fixed; bottom: 20px; right: 20px; background: var(--primary); color: white; padding: 15px 25px; border: 3px solid var(--border-color); font-weight: bold; box-shadow: 4px 4px 0px var(--border-color); z-index: 9999; opacity: 1; transition: opacity 0.5s ease; }
.toast.hidden { opacity: 0; pointer-events: none; }

/* ========================================= */
/* CSS KHUSUS UNTUK CETAK PDF / PRINTER      */
/* ========================================= */
@media print {
    body { background: white !important; color: black !important; }
    
    /* Sembunyikan elemen yang tidak perlu dicetak */
    .no-print, .anarko-header, .anarko-nav, .calc-section, .history-panel, .toast { 
        display: none !important; 
    }
    
    .layout-wrapper { display: block; }
    .container { padding: 0; }
    
    /* Rapikan kotak hasil untuk cetakan */
    .result-box { 
        display: block !important;
        border: 2px solid black !important; 
        box-shadow: none !important; 
        width: 100%;
    }
    .print-header { display: block; } /* Tampilkan judul laporan */
    .interpretasi { border-left-color: black !important; }
}

/* ========================================= */
/* MODAL POP-UP KONFIRMASI KUSTOM            */
/* ========================================= */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.85); /* Latar belakang gelap transparan */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.modal-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.modal-box {
    background: var(--bg-color);
    padding: 30px;
    border: 4px solid var(--primary);
    box-shadow: 10px 10px 0px var(--primary);
    max-width: 400px;
    text-align: center;
    margin: 20px;
}

.modal-box h3 {
    color: var(--primary);
    margin-bottom: 15px;
}

.modal-actions {
    display: flex;
    justify-content: space-around;
    margin-top: 25px;
    gap: 15px;
}

.modal-actions button {
    flex: 1;
}

.btn-danger {
    background: var(--primary);
    color: white;
    border-color: var(--border-color);
}

@media (max-width: 800px) {
    .history-panel { border-left: none; border-top: 3px solid var(--border-color); height: auto; }
}
@media (max-width: 600px) {
    .nav-btn { flex: 100%; border-right: none; border-bottom: 3px solid var(--border-color); }
    .action-buttons { flex-direction: column; }
}