/* style.css */

body {
    background-color: #111827; /* bg-gray-900 */
    color: #d1d5db; /* text-gray-300 */
    font-family: 'Inter', sans-serif;
    padding: 1.5rem; /* p-6 */
}

/* --- Elemen Utama --- */
.card {
    background-color: #1f2937; /* bg-gray-800 */
    padding: 2rem; /* p-8 */
    border-radius: 0.75rem; /* rounded-xl */
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

h2, h3 {
    font-size: 1.25rem; /* text-xl */
    font-weight: 700; /* font-bold */
    color: #ffffff; /* text-white */
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #374151; /* border-gray-700 */
}

/* --- Form & Input --- */
label {
    display: block;
    color: #9ca3af; /* text-gray-400 */
    margin-bottom: 0.5rem;
    font-size: 0.875rem; /* text-sm */
    font-weight: 500; /* font-medium */
}

.input-field {
    background-color: #374151; /* bg-gray-700 */
    border: 1px solid #4b5563; /* border-gray-600 */
    color: #ffffff;
    font-size: 1rem;
    border-radius: 0.5rem; /* rounded-lg */
    padding: 0.75rem;
    padding-left: 3rem; /* pl-12 for Rp sign */
    width: 100%;
    transition: border-color 0.2s;
    text-align: right;
}
.input-field::placeholder {
    color: #6b7280; /* text-gray-500 */
}
.input-field:focus {
    outline: none;
    border-color: #3b82f6; /* focus:border-blue-500 */
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.4);
}

/* --- Loader --- */
.loader {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    width: 50px;
    height: 50px;
    border: 5px solid #374151; /* border-gray-700 */
    border-top-color: #3b82f6; /* border-blue-500 */
    border-radius: 50%;
    animation: spin 1s linear infinite;
    z-index: 100;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* --- Modal --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 50;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.modal-overlay.visible {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: #1f2937; /* bg-gray-800 */
    padding: 2rem;
    border-radius: 0.75rem;
    width: 90%;
    max-width: 400px;
}

/* --- Kalkulasi --- */
.result-value {
    font-weight: 600;
    font-size: 1.125rem; /* text-lg */
}

/* --- Paginasi --- */
.pagination-btn {
    padding: 0.5rem 1rem;
    border: 1px solid #4b5563; /* border-gray-600 */
    background-color: #374151; /* bg-gray-700 */
    color: #d1d5db; /* text-gray-300 */
    border-radius: 0.375rem; /* rounded-md */
    transition: background-color 0.2s;
}

.pagination-btn:hover {
    background-color: #4b5563; /* bg-gray-600 */
}

.pagination-btn.active {
    background-color: #3b82f6; /* bg-blue-600 */
    border-color: #3b82f6; /* border-blue-600 */
    color: #ffffff; /* text-white */
}