:root {
    --primary-color: #4361ee;
    --secondary-color: #3f37c9;
    --accent-color: #4cc9f0;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f0f2f5;
    color: #333;
    line-height: 1.6;
    padding: 20px;
}

.input-with-unit { position: relative; }
.input-with-unit input { padding-right: 30px !important; }
.input-unit {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: #777;
    pointer-events: none;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.logo-container { text-align: center; margin-bottom: 2rem; }
.logo {
    font-family: 'Arial Black', sans-serif;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.logo-adji { color: #dc3545; }
.logo-n1 { color: #28a745; }
.logo-e { color: #ffc107; }
.logo-o { color: #dc3545; }
.logo-n2 { color: #4361ee; }
.logo-icon { color: var(--accent-color); }
.logo-subtitle {
    font-size: 1rem;
    color: var(--dark-color);
    font-weight: 500;
    letter-spacing: 1px;
}

h1, h2, h3 { color: var(--primary-color); margin-bottom: 1rem; }
h1 {
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 0.5rem;
}
h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: var(--accent-color);
}

.form-group { margin-bottom: 1.5rem; }
.form-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
}
.form-col { flex: 1; min-width: 200px; }

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-color);
}

input, select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}
input:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 1rem 0;
}
.checkbox-group input { width: auto; }

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin: 1rem 0;
}
.radio-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.radio-option input { width: auto; }

button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
button:hover { background-color: var(--secondary-color); transform: translateY(-2px); }
button:active { transform: translateY(0); }
button i { font-size: 1rem; }

#hasil {
    margin-top: 2rem;
    display: none;
    animation: fadeIn 0.5s ease;
}

.result-box {
    background-color: #f8f9fa;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

table { width: 100%; border-collapse: collapse; margin: 1rem 0; }
table, th, td { border: 1px solid #ddd; }
th, td { padding: 0.75rem; text-align: left; }
th { background-color: var(--primary-color); color: white; }
tr:nth-child(even) { background-color: #f2f2f2; }

.total-price {
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--success-color);
    margin-top: 1rem;
    text-align: right;
    padding: 0.5rem;
    background-color: rgba(40, 167, 69, 0.1);
    border-radius: var(--border-radius);
}

.action-buttons { display: flex; gap: 1rem; margin-top: 1rem; }
.btn-print { background-color: var(--dark-color); }
.btn-reset { background-color: var(--danger-color); }
.btn-whatsapp { background-color: #25D366; }
.btn-save { background-color: var(--warning-color); color: var(--dark-color); }

.alert {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.alert-info {
    background-color: rgba(67, 97, 238, 0.1);
    border-left: 4px solid var(--primary-color);
    color: var(--dark-color);
}
.alert i { font-size: 1.25rem; }

.price-breakdown {
    margin-top: 1rem;
    padding: 1rem;
    background-color: rgba(76, 201, 240, 0.1);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--accent-color);
}
.price-breakdown p { margin-bottom: 0.5rem; }

@media (max-width: 768px) {
    .container { padding: 1rem; }
    .form-col { min-width: 100%; }
    .action-buttons { flex-direction: column; }
}

@media print {
    body * { visibility: hidden; }
    #invoice, #invoice * { visibility: visible; }
    #invoice {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        padding: 20px;
        background: white;
    }
    .no-print { display: none !important; }
    .logo-container { display: none !important; }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.info-icon {
    color: var(--primary-color);
    margin-left: 0.5rem;
    cursor: help;
    position: relative;
}

.tooltip {
    position: absolute;
    background-color: var(--dark-color);
    color: white;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    width: 200px;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 0.5rem;
    visibility: hidden;
    opacity: 0;
    transition: var(--transition);
    z-index: 10;
}

.info-icon:hover .tooltip { visibility: visible; opacity: 1; }

.spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--success-color);
    color: white;
    padding: 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    z-index: 1000;
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast i { font-size: 1.25rem; }

.dark-mode-toggle {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background: var(--dark-color);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--box-shadow);
    z-index: 100;
}

body.dark-mode { background-color: #121212; color: #f0f0f0; }
body.dark-mode .container { background-color: #1e1e1e; color: #f0f0f0; }
body.dark-mode label { color: #f0f0f0; }
body.dark-mode input, body.dark-mode select { background-color: #2d2d2d; color: #f0f0f0; border-color: #444; }
body.dark-mode .result-box { background-color: #2d2d2d; }
body.dark-mode table, body.dark-mode th, body.dark-mode td { border-color: #444; }
body.dark-mode tr:nth-child(even) { background-color: #333; }