.kalkulator-page {
    padding: 60px 20px;
    max-width: 1200px;
    margin: 0 auto;
    font-family: 'Inter', sans-serif;
}

.kalkulator-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    color: #1f2937;
    margin-bottom: 40px;
}

/* Tabs */
.kalkulator-tabs {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 50px;
    border-bottom: 2px solid #f3f4f6;
}

.tab-btn {
    background: none;
    border: none;
    padding: 10px 20px;
    font-size: 1rem;
    font-weight: 600;
    color: #6b7280;
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    color: #1f2937;
}

.tab-btn.active {
    color: #1f2937;
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: #1f2937;
    border-radius: 3px 3px 0 0;
}

/* Layout Grid */
.kalkulator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: flex-start;
}

@media (max-width: 768px) {
    .kalkulator-grid {
        grid-template-columns: 1fr;
    }
    .kalkulator-tabs {
        flex-wrap: wrap;
        gap: 10px;
    }
}

/* Form Container */
.kalkulator-form {
    background: #fff;
    border-radius: 16px;
    /* padding: 20px; */
}

.form-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.form-header i {
    color: #f59e0b;
    font-size: 1.5rem;
}

.form-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1f2937;
    margin: 0;
}

.form-desc {
    color: #6b7280;
    font-size: 0.9rem;
    margin-bottom: 24px;
    line-height: 1.5;
}

/* Sub Tabs (Per-Tahun / Per-Bulan) */
.sub-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 24px;
}

.sub-tab-btn {
    flex: 1;
    padding: 12px;
    border: 1px solid #e5e7eb;
    background: #fff;
    color: #6b7280;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.sub-tab-btn.active {
    background: #1f2937;
    color: #fff;
    border-color: #1f2937;
}

/* Inputs */
.form-group {
    margin-bottom: 20px;
}

.form-control {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    color: #1f2937;
    outline: none;
    transition: border-color 0.2s ease;
}

.form-control:focus {
    border-color: #10b981;
}

.input-note {
    font-size: 0.8rem;
    color: #9ca3af;
    margin-top: 8px;
    display: block;
}

.btn-hitung {
    background: #10b981;
    color: #fff;
    border: none;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 700;
    border-radius: 8px;
    cursor: pointer;
    width: 100%;
    transition: background 0.3s ease;
    margin-top: 10px;
}
.btn-hitung:hover {
    background: #059669;
}

/* Result Card */
.result-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 10px 25px -5px rgba(0,0,0,0.05);
}

.result-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.result-header i {
    color: #f59e0b;
    font-size: 1.5rem;
}

.result-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: #1f2937;
    margin: 0;
}

.result-desc {
    color: #6b7280;
    font-size: 0.9rem;
    margin-bottom: 24px;
}

.result-item {
    margin-bottom: 20px;
}

.result-item label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: #374151;
    margin-bottom: 8px;
}

.result-box {
    background: #f3f4f6;
    padding: 14px 16px;
    border-radius: 8px;
    font-weight: 600;
    color: #1f2937;
}

/* Status Box */
.status-box {
    background: #fef3c7; /* yellow-100 */
    border-radius: 8px;
    padding: 20px;
    margin-top: 30px;
    transition: all 0.3s ease;
}

.status-box.wajib {
    background: #d1fae5; /* green-100 */
}

.status-title {
    font-weight: 700;
    color: #d97706; /* yellow-600 */
    margin-bottom: 8px;
}

.status-box.wajib .status-title {
    color: #059669; /* green-600 */
}

.status-text {
    font-size: 0.9rem;
    color: #4b5563; /* gray-600 */
    line-height: 1.5;
}

.btn-tunaikan {
    display: inline-block;
    background: #f59e0b;
    color: #fff;
    font-weight: 700;
    text-decoration: none;
    padding: 12px 24px;
    border-radius: 8px;
    margin-top: 16px;
    transition: background 0.3s ease;
}
.btn-tunaikan:hover {
    background: #d97706;
}

/* Last Updated Info */
.last-updated-info {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 18px;
    padding: 10px 14px;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    font-size: 11.5px;
    color: #6b7280;
    line-height: 1.4;
}

.last-updated-info i {
    color: #9ca3af;
    font-size: 11px;
    flex-shrink: 0;
}

.last-updated-info strong {
    color: #374151;
}